Slide that I created to support teaching science to my lower secondary student (Grade 7). The topic is Ray Model of Light. Some contents (pics and videos) are not mine. Hope it is useful for all teacher around the globe.
This document summarizes key concepts about light, including:
1. Light travels in straight lines and can be reflected or refracted. The law of reflection states that the angle of incidence equals the angle of reflection.
2. Refraction occurs when light travels from one medium to another of different density, causing the light to bend and change speed. This is demonstrated through experiments with glass blocks.
3. Prisms disperse white light into a visible spectrum due to the different wavelengths of light being refracted different amounts.
4. Mirrors form virtual upright images that are laterally inverted from the object, as shown through ray diagrams. Shadows are formed when light is blocked by an opaque object.
The document discusses refraction and how it causes the bending of light. When light passes from one medium to another with a different speed, it changes direction. This is demonstrated through experiments with prisms, soap bubbles, CDs, and spoons in water. A prism separates white light into the visible color spectrum through refraction. Longer wavelengths like red bend the least and shorter wavelengths like blue or violet bend the most. The sky appears blue because air scatters shorter blue wavelengths of sunlight more than longer red wavelengths.
Light is an important source of energy that enables us to see. It travels extremely fast, at 300 million meters per second in a vacuum. When light hits surfaces, it can be reflected, refracted, or dispersed depending on the type of surface. Reflection occurs when light rays bounce off surfaces, while refraction is when light bends as it passes from one medium to another of different density. Dispersion is when white light separates into the colors of the visible spectrum through refraction in a prism.
Light is a form of energy that travels in waves and can be classified as either luminous (light-emitting) or non-luminous (not light-emitting). Luminous objects like stars emit light in all directions, while non-luminous objects like the moon can only be seen when light reflects off of their surfaces. Light travels in straight lines called rays, and its interaction with materials determines whether shadows are formed and how objects appear. The document goes on to describe properties of reflection, refraction, the formation of colors, and more.
The document discusses the properties of transparent, translucent, and opaque objects and defines what a shadow is. It then outlines the key requirements for the formation of shadows: 1) an object must be opaque, 2) there must be a light source, 3) a shadow can only be seen on a surface, 4) the size of the shadow depends on the position of the light source, and 5) shadows appear black in color.
Light travels in straight lines until interacting with objects. It can scatter, reflect, refract, or be absorbed. Reflection causes light to bounce off a surface at the same angle. Refraction causes light to change speed and direction when passing from one medium to another, such as from water to air. Absorption occurs when light is taken in by an object and its energy is transferred to heat.
Light is an electromagnetic wave that consists of oscillating electric and magnetic fields and can travel through space. It spreads in straight lines and carries energy. Light sources such as the sun emit light, while objects that do not emit light themselves are called dark bodies. When light hits surfaces, it can be reflected, absorbed, or pass through depending on whether the surface is opaque, translucent, or transparent. The law of reflection states that the angle of incidence equals the angle of reflection. Shadows form when light rays are blocked by an opaque object.
The document discusses the nature and properties of light. It explains that early scientists like Newton and Huygens disagreed on whether light behaved as a particle or wave, but Maxwell later proposed light has a dual nature. The document also discusses common light sources like the sun and artificial sources like bulbs. It describes how these sources transform other forms of energy into light. Additionally, it explains properties of light such as traveling in straight lines and casting shadows due to its high fixed speed.
This document summarizes key concepts about light, including:
1. Light travels in straight lines and can be reflected or refracted. The law of reflection states that the angle of incidence equals the angle of reflection.
2. Refraction occurs when light travels from one medium to another of different density, causing the light to bend and change speed. This is demonstrated through experiments with glass blocks.
3. Prisms disperse white light into a visible spectrum due to the different wavelengths of light being refracted different amounts.
4. Mirrors form virtual upright images that are laterally inverted from the object, as shown through ray diagrams. Shadows are formed when light is blocked by an opaque object.
The document discusses refraction and how it causes the bending of light. When light passes from one medium to another with a different speed, it changes direction. This is demonstrated through experiments with prisms, soap bubbles, CDs, and spoons in water. A prism separates white light into the visible color spectrum through refraction. Longer wavelengths like red bend the least and shorter wavelengths like blue or violet bend the most. The sky appears blue because air scatters shorter blue wavelengths of sunlight more than longer red wavelengths.
Light is an important source of energy that enables us to see. It travels extremely fast, at 300 million meters per second in a vacuum. When light hits surfaces, it can be reflected, refracted, or dispersed depending on the type of surface. Reflection occurs when light rays bounce off surfaces, while refraction is when light bends as it passes from one medium to another of different density. Dispersion is when white light separates into the colors of the visible spectrum through refraction in a prism.
Light is a form of energy that travels in waves and can be classified as either luminous (light-emitting) or non-luminous (not light-emitting). Luminous objects like stars emit light in all directions, while non-luminous objects like the moon can only be seen when light reflects off of their surfaces. Light travels in straight lines called rays, and its interaction with materials determines whether shadows are formed and how objects appear. The document goes on to describe properties of reflection, refraction, the formation of colors, and more.
The document discusses the properties of transparent, translucent, and opaque objects and defines what a shadow is. It then outlines the key requirements for the formation of shadows: 1) an object must be opaque, 2) there must be a light source, 3) a shadow can only be seen on a surface, 4) the size of the shadow depends on the position of the light source, and 5) shadows appear black in color.
Light travels in straight lines until interacting with objects. It can scatter, reflect, refract, or be absorbed. Reflection causes light to bounce off a surface at the same angle. Refraction causes light to change speed and direction when passing from one medium to another, such as from water to air. Absorption occurs when light is taken in by an object and its energy is transferred to heat.
Light is an electromagnetic wave that consists of oscillating electric and magnetic fields and can travel through space. It spreads in straight lines and carries energy. Light sources such as the sun emit light, while objects that do not emit light themselves are called dark bodies. When light hits surfaces, it can be reflected, absorbed, or pass through depending on whether the surface is opaque, translucent, or transparent. The law of reflection states that the angle of incidence equals the angle of reflection. Shadows form when light rays are blocked by an opaque object.
The document discusses the nature and properties of light. It explains that early scientists like Newton and Huygens disagreed on whether light behaved as a particle or wave, but Maxwell later proposed light has a dual nature. The document also discusses common light sources like the sun and artificial sources like bulbs. It describes how these sources transform other forms of energy into light. Additionally, it explains properties of light such as traveling in straight lines and casting shadows due to its high fixed speed.
Light travels in straight lines at a speed of around 300,000 kilometres per second, much faster than sound. We see objects because they reflect light into our eyes. Shadows are formed when light is blocked by an object. Light reflects off surfaces at the same angle it hits them, following the law of reflection. White light is made up of the colors of the rainbow which can be split and recombined.
Refraction is the change in direction of light when it passes from one medium to another. Light bends towards the normal when traveling from a less dense to a more dense medium, and away from the normal in the opposite case. The ratio of sines of the angle of incidence and refraction is a constant called the refractive index, which depends on the optical densities of the media. Total internal reflection occurs when light travels from a denser to a less dense medium at an angle greater than the critical angle.
The document discusses how a prism splits white light into a spectrum or band of colors. When white light passes through a prism, it disperses the different wavelengths of light, with red light bending the least and violet light bending the most. This causes the different colors to emerge along separate paths and become visible. Isaac Newton used a prism to first demonstrate that white light is made up of a combination of the seven colors - violet, indigo, blue, green, yellow, orange and red. He was able to recombine the colors using a second prism positioned in the opposite orientation of the first.
The document discusses the nature and properties of light. It covers early theories on light as particles (Newton) and waves (Huygens). Maxwell's electromagnetic theory unified electricity, magnetism and light. The electromagnetic spectrum is introduced. Common light sources include the sun and artificial lamps. Materials can transmit, scatter, or absorb light depending on whether they are transparent, translucent, or opaque. Light interacts with materials through reflection, absorption, refraction, polarization and scattering. Key characteristics of light discussed are brightness, which depends on source and distance, and luminous intensity measured in candelas.
Objects float if they are less dense than the fluid they are in, while objects sink if they are more dense. Density depends on an object's mass and volume. Ships and submarines are able to control whether they float or sink by changing their overall density, either by changing their mass through adjusting ballast, or changing their volume. Archimedes' principle explains that the buoyant force on an object equals the weight of the fluid it displaces.
This document discusses how vision works and the science of reflection. It explains that light reflects off shiny, smooth surfaces like mirrors, while it scatters off rough surfaces. When light hits different materials, it may reflect, scatter, or refract. Reflection causes light to bounce back at the same angle, while refraction bends the light. Experiments are described to observe reflection using mirrors and the bending of light when it passes through water or other transparent materials.
White light can be split into the colors of the visible light spectrum through the process of dispersion. When light passes through a prism, it refracts differently depending on wavelength - red light refracts the least and violet light refracts the most. This separates white light into the colors of the rainbow spectrum: red, orange, yellow, green, blue, indigo, and violet. The document discusses light dispersion, spectrum, refractive index, reflection and refraction.
After learning about dispersion of light, students can identify that dispersion is the separation of visible light into its constituent colors, such as red, orange, yellow, green, blue, indigo, and violet. Dispersion occurs when light passes through a dispersive medium like a prism or raindrops, which break up white light into a rainbow spectrum.
- Reflection of light occurs when light bounces off a surface. The angle of incidence is equal to the angle of reflection.
- Refraction occurs when light changes speed and direction as it passes from one medium to another. The ratio of the sines of the angles of incidence and refraction is a constant value called the refractive index.
- Experiments can show that light reflects according to the law of reflection and refracts at different angles depending on the medium, such as when passing through glass blocks. Measurements are used to determine refractive indices.
The document discusses the dispersion of light. Dispersion is defined as the splitting of white light into its component colors. When white light passes through a glass prism, it is dispersed into a spectrum of colors from red to violet due to the different wavelengths bending at different angles. Isaac Newton used two prisms to show that the colors of the spectrum can be recombined to form white light again.
When light passes through certain materials like filters, only some colors of light are transmitted while others are absorbed. Red, green and blue filters each transmit only their respective color, while cyan filters transmit green and blue, yellow filters transmit green and red, and magenta filters transmit red and blue. These primary colors - red, green and blue - can be combined additively to produce other colors, with all three producing white. Filters can also be used in series to prevent any light from passing through by absorbing all colors.
A moment is a turning force that is calculated by multiplying the applied force by its distance from the pivot point. Centripetal force keeps an object moving in a circular path and increases with mass, speed, or decreasing radius. Momentum is an object's mass multiplied by its velocity, and momentum is conserved in collisions as long as no external forces act.
Light travels in a straight line and can be reflected, refracted, or absorbed when it hits different materials and surfaces. Reflection occurs when light bounces off a surface like a mirror, following the laws of reflection. Refraction is when light changes direction as it passes from one medium to another, like from air to water. Lenses and curved mirrors can form real or virtual images by refracting or reflecting light rays. Prisms disperse white light into a spectrum due to refraction, demonstrating that light is made of different colors.
The document defines key terms related to the reflection of light such as normal, angle of incidence, and angle of reflection. It states that the angle of incidence is equal to the angle of reflection and uses this principle in calculations and measurements. Examples are provided to demonstrate calculating angles of incidence and reflection from diagrams of light rays reflecting off plane mirrors.
Light is a form of energy that allows us to see. It travels extremely fast at around 300,000 kilometers per second. Without light, we would not be able to see anything around us even though objects would still be present. Light comes in different types including visible light, which is what our eyes can see, as well as invisible types like infrared and ultraviolet light. Visible light is made up of different colors that can be remembered with the acronym ROYGBIV. Light travels in waves and its wavelength and frequency determine properties like energy level.
The document provides information about the Solar System and celestial bodies. It discusses that the Solar System consists of the Sun and eight planets that orbit it, as well as asteroids, comets, and moons. It describes the different types of planets and celestial bodies, including their composition and orbits. It also provides details about the Earth, including its rotation, axis, and seasons, as well as phases of the Moon.
This document discusses the concept of pressure in physics. It defines pressure as the force applied over an area, and provides an example comparing the pressure exerted by a fingertip versus a palm. Pressure is measured in units of pascals or other derivatives of newtons per area. The document explains that applying the same force over a larger area results in lower pressure. It provides examples of how high and low pressure are used in different situations like shoes on muddy ground, skis on snow, and knives cutting food. Finally, it briefly discusses how pressure increases with depth in liquids and can be transmitted through a liquid.
The document discusses the reflection and refraction of light, including how lenses and mirrors form images. It describes how lenses can form real or virtual images and how ray diagrams illustrate this. It also discusses how optical systems use multiple lenses or mirrors to form images and the factors that determine image properties such as location, type, and sharpness.
This document discusses the refraction of light. It defines refraction as the change in direction of light when passing from one medium to another. It states that light bends away from the normal when traveling to a less dense medium, and toward the normal when traveling to a denser medium. Snell's law is introduced, which states that the ratio of sines of the angle of incidence and refraction is a constant. Refractive index is defined as the ratio of speed of light in a vacuum to that in a medium. Lens equations and image formation by convex and concave lenses are briefly covered.
Light travels in straight lines and can be reflected, refracted, or dispersed. Reflection occurs when light bounces off a surface, such as in mirrors. Refraction is when light changes speed and direction as it passes from one medium to another of different density, such as from air to water. White light can be dispersed by a prism into the colors of the visible spectrum.
This document provides revision notes on chemical bonding for a science class. It explains that atoms form ionic bonds through the transfer of electrons from metals to non-metals, creating cations and anions, while covalent bonds form through the sharing of electrons between nonmetal atoms. It lists common cations and anions and provides examples of ionic and covalent compounds. There are also practice questions for students to test their understanding of chemical bonding concepts.
Light travels in straight lines at a speed of around 300,000 kilometres per second, much faster than sound. We see objects because they reflect light into our eyes. Shadows are formed when light is blocked by an object. Light reflects off surfaces at the same angle it hits them, following the law of reflection. White light is made up of the colors of the rainbow which can be split and recombined.
Refraction is the change in direction of light when it passes from one medium to another. Light bends towards the normal when traveling from a less dense to a more dense medium, and away from the normal in the opposite case. The ratio of sines of the angle of incidence and refraction is a constant called the refractive index, which depends on the optical densities of the media. Total internal reflection occurs when light travels from a denser to a less dense medium at an angle greater than the critical angle.
The document discusses how a prism splits white light into a spectrum or band of colors. When white light passes through a prism, it disperses the different wavelengths of light, with red light bending the least and violet light bending the most. This causes the different colors to emerge along separate paths and become visible. Isaac Newton used a prism to first demonstrate that white light is made up of a combination of the seven colors - violet, indigo, blue, green, yellow, orange and red. He was able to recombine the colors using a second prism positioned in the opposite orientation of the first.
The document discusses the nature and properties of light. It covers early theories on light as particles (Newton) and waves (Huygens). Maxwell's electromagnetic theory unified electricity, magnetism and light. The electromagnetic spectrum is introduced. Common light sources include the sun and artificial lamps. Materials can transmit, scatter, or absorb light depending on whether they are transparent, translucent, or opaque. Light interacts with materials through reflection, absorption, refraction, polarization and scattering. Key characteristics of light discussed are brightness, which depends on source and distance, and luminous intensity measured in candelas.
Objects float if they are less dense than the fluid they are in, while objects sink if they are more dense. Density depends on an object's mass and volume. Ships and submarines are able to control whether they float or sink by changing their overall density, either by changing their mass through adjusting ballast, or changing their volume. Archimedes' principle explains that the buoyant force on an object equals the weight of the fluid it displaces.
This document discusses how vision works and the science of reflection. It explains that light reflects off shiny, smooth surfaces like mirrors, while it scatters off rough surfaces. When light hits different materials, it may reflect, scatter, or refract. Reflection causes light to bounce back at the same angle, while refraction bends the light. Experiments are described to observe reflection using mirrors and the bending of light when it passes through water or other transparent materials.
White light can be split into the colors of the visible light spectrum through the process of dispersion. When light passes through a prism, it refracts differently depending on wavelength - red light refracts the least and violet light refracts the most. This separates white light into the colors of the rainbow spectrum: red, orange, yellow, green, blue, indigo, and violet. The document discusses light dispersion, spectrum, refractive index, reflection and refraction.
After learning about dispersion of light, students can identify that dispersion is the separation of visible light into its constituent colors, such as red, orange, yellow, green, blue, indigo, and violet. Dispersion occurs when light passes through a dispersive medium like a prism or raindrops, which break up white light into a rainbow spectrum.
- Reflection of light occurs when light bounces off a surface. The angle of incidence is equal to the angle of reflection.
- Refraction occurs when light changes speed and direction as it passes from one medium to another. The ratio of the sines of the angles of incidence and refraction is a constant value called the refractive index.
- Experiments can show that light reflects according to the law of reflection and refracts at different angles depending on the medium, such as when passing through glass blocks. Measurements are used to determine refractive indices.
The document discusses the dispersion of light. Dispersion is defined as the splitting of white light into its component colors. When white light passes through a glass prism, it is dispersed into a spectrum of colors from red to violet due to the different wavelengths bending at different angles. Isaac Newton used two prisms to show that the colors of the spectrum can be recombined to form white light again.
When light passes through certain materials like filters, only some colors of light are transmitted while others are absorbed. Red, green and blue filters each transmit only their respective color, while cyan filters transmit green and blue, yellow filters transmit green and red, and magenta filters transmit red and blue. These primary colors - red, green and blue - can be combined additively to produce other colors, with all three producing white. Filters can also be used in series to prevent any light from passing through by absorbing all colors.
A moment is a turning force that is calculated by multiplying the applied force by its distance from the pivot point. Centripetal force keeps an object moving in a circular path and increases with mass, speed, or decreasing radius. Momentum is an object's mass multiplied by its velocity, and momentum is conserved in collisions as long as no external forces act.
Light travels in a straight line and can be reflected, refracted, or absorbed when it hits different materials and surfaces. Reflection occurs when light bounces off a surface like a mirror, following the laws of reflection. Refraction is when light changes direction as it passes from one medium to another, like from air to water. Lenses and curved mirrors can form real or virtual images by refracting or reflecting light rays. Prisms disperse white light into a spectrum due to refraction, demonstrating that light is made of different colors.
The document defines key terms related to the reflection of light such as normal, angle of incidence, and angle of reflection. It states that the angle of incidence is equal to the angle of reflection and uses this principle in calculations and measurements. Examples are provided to demonstrate calculating angles of incidence and reflection from diagrams of light rays reflecting off plane mirrors.
Light is a form of energy that allows us to see. It travels extremely fast at around 300,000 kilometers per second. Without light, we would not be able to see anything around us even though objects would still be present. Light comes in different types including visible light, which is what our eyes can see, as well as invisible types like infrared and ultraviolet light. Visible light is made up of different colors that can be remembered with the acronym ROYGBIV. Light travels in waves and its wavelength and frequency determine properties like energy level.
The document provides information about the Solar System and celestial bodies. It discusses that the Solar System consists of the Sun and eight planets that orbit it, as well as asteroids, comets, and moons. It describes the different types of planets and celestial bodies, including their composition and orbits. It also provides details about the Earth, including its rotation, axis, and seasons, as well as phases of the Moon.
This document discusses the concept of pressure in physics. It defines pressure as the force applied over an area, and provides an example comparing the pressure exerted by a fingertip versus a palm. Pressure is measured in units of pascals or other derivatives of newtons per area. The document explains that applying the same force over a larger area results in lower pressure. It provides examples of how high and low pressure are used in different situations like shoes on muddy ground, skis on snow, and knives cutting food. Finally, it briefly discusses how pressure increases with depth in liquids and can be transmitted through a liquid.
The document discusses the reflection and refraction of light, including how lenses and mirrors form images. It describes how lenses can form real or virtual images and how ray diagrams illustrate this. It also discusses how optical systems use multiple lenses or mirrors to form images and the factors that determine image properties such as location, type, and sharpness.
This document discusses the refraction of light. It defines refraction as the change in direction of light when passing from one medium to another. It states that light bends away from the normal when traveling to a less dense medium, and toward the normal when traveling to a denser medium. Snell's law is introduced, which states that the ratio of sines of the angle of incidence and refraction is a constant. Refractive index is defined as the ratio of speed of light in a vacuum to that in a medium. Lens equations and image formation by convex and concave lenses are briefly covered.
Light travels in straight lines and can be reflected, refracted, or dispersed. Reflection occurs when light bounces off a surface, such as in mirrors. Refraction is when light changes speed and direction as it passes from one medium to another of different density, such as from air to water. White light can be dispersed by a prism into the colors of the visible spectrum.
This document provides revision notes on chemical bonding for a science class. It explains that atoms form ionic bonds through the transfer of electrons from metals to non-metals, creating cations and anions, while covalent bonds form through the sharing of electrons between nonmetal atoms. It lists common cations and anions and provides examples of ionic and covalent compounds. There are also practice questions for students to test their understanding of chemical bonding concepts.
1. Light rays travel in straight lines until interacting with matter. Rays reflect off mirrors and spherical lenses according to the law of reflection, where the angle of incidence equals the angle of reflection.
2. Plane mirrors form virtual upright images that are the same size as the object and as far behind the mirror as the object is in front. Spherical mirrors can form real or virtual images, depending on the position of the object relative to the focal point.
3. Concave mirrors form real enlarged images of objects placed between the center of curvature and focal point, and real reduced images of objects beyond the center of curvature. Convex mirrors always produce virtual upright reduced images.
This document discusses the basics of mirrors and reflection. It explains that a simple mirror is made of a plane glass with a silver coating on the back protected by a layer of red paint. This allows the glass to provide a smooth reflective surface while preventing light from passing through. The key points of reflection are also outlined, including how the incident ray strikes the mirror at the point of incidence, and the reflected ray bounces off at the same angle following the law of reflection.
Light propagates in straight lines and can be reflected, refracted, and diffracted when interacting with matter. Reflection occurs when light hits a smooth surface and bounces back into the same medium at the same angle. Regular reflection occurs from plane mirrors where the angle of incidence equals the angle of reflection. Spherical mirrors can be concave or convex. Concave mirrors form real, inverted images, while convex mirrors form virtual, upright images. The mirror equation relates the focal length and distances of the object and image.
This document discusses acids and alkalis. It defines acids as substances that produce hydrogen ions in water, and provides examples like hydrochloric acid. Acids have properties like a sour taste, turning litmus red, and reacting with metals and carbonates. Alkalis are defined as metal oxides or hydroxides soluble in water, with examples like sodium hydroxide. Alkalis have properties like a bitter taste, turning litmus blue, and reacting with acids. The document also describes how acids and alkalis neutralize each other to form salts and water.
1) Light travels much faster than sound, so we see lightning before hearing thunder. When a starting pistol fires, we see the smoke before hearing the bang.
2) Light travels extremely fast at around 300,000 kilometers per second, and can circle the Earth 8 times in one second.
3) Light reaches the moon in 1.3 seconds, the nearest star other than the sun in 8.5 minutes, but reaches Pluto and the sun almost instantly.
This document provides an overview of light and optics topics including:
- Light travels in straight lines and can be reflected, absorbed, or pass through materials
- Shadows are formed when light is blocked and change size based on the position of the light source
- Refraction causes light to change direction when passing from one material to another, as seen through lenses and prisms
- Natural light sources like the sun can be investigated using shadows, while mirrors, lenses, and telescopes demonstrate optical principles.
This document appears to be a science worksheet for primary grade 5 students. It contains questions about light, energy, magnets, mixtures, ecosystems, and relationships between living things. The questions are multiple choice and completion type where students are asked to provide scientific terms. Key topics covered include the nature of light, reflection, refraction, the electromagnetic spectrum, properties of magnets, types of mixtures and how to separate them, components of an ecosystem, and different relationships between organisms like predation, competition, and symbiosis.
O documento discute a importância dos mistérios e das perguntas na evolução humana. Apresenta exemplos como as crianças índigo que parecem ter memórias cósmicas e discute como a ausência de respostas pode ser uma resposta em si. Também reflete sobre como um mundo sem mistérios tornaria os humanos apáticos.
The document provides tips and instructions for conducting effective searches on the ClearedJobs.Net job search website. It explains that users can quickly search by entering keywords, location, and security clearance from the home page or by accessing quick and advanced search options from their dashboard. It also recommends using saved searches, job agents, and search filters to refine results and be notified of new matching jobs.
About SmartOwner:
SmartOwner.com is India's first and largest marketplace for real estate investors. We enable NRIs and Indian residents to invest in property in India at deeply discounted prices through our innovative crowd-funding model. Top developers in India's fastest-growing cities such as Bangalore, Pune, and Chennai list their premium plots, apartments, and villas for sale on smartowner.com at a significant discount compared to the current market price. Clients looking for a turnkey solution can engage the services of SmartOwner's marketing division to resell the property that they purchased through smartowner.com for a hassle-free way to profit from India's rapidly growing economy.
This document provides information about a booklet called "Let's Explore Europe!" which aims to teach children about the European Union and the continent of Europe. It includes chapters on the geography of Europe, languages, climate, farming, history, and the European Union. The booklet was published by the European Commission and is available online for teachers and students to use as a learning resource. It encourages readers to learn more about Europe through games, quizzes and further research.
Cuapiaxtla significa "lugar de montes" o "individuos que cuidan los montes" en náhuatl. Se localiza en el estado de Tlaxcala, México a una altitud de 2440 metros sobre el nivel del mar. Después de la conquista, los naturales de Cuapiaxtla participaron en la colonización de Nueva España y el rey Carlos V les otorgó tierras en Cuapiaxtla en 1545.
Microsoft .NET F# Implementation of A* search algorithmAndrea Tino
Final report for a university project assignment at the department of Artificial Intelligence (UNICT). The document is about performance evaluation of an algorithm written in Microsoft .NET F# implementing the A* algorithm. The algorithm is intended to be used for finding shortest paths on city maps given a start and a finish position. Performance comparison is performed with an existing algorithm performing exhausting-naive graph search written in Prolog.
The document discusses light sources and how light travels. The major natural light source is the sun. Light travels in straight lines and can be reflected, absorbed, or pass through objects. It is reflected off opaque objects, absorbed by some objects, and passes through transparent or translucent objects. The eyes see light that enters through the cornea and is focused on the retina, where light information is sent to the brain to be interpreted as vision. Shadows are formed when light is blocked by opaque objects. The position of the sun affects the length and location of shadows outside.
Light is a type of electromagnetic radiation that travels in waves. It can come from natural or artificial sources and travels in straight lines at a speed of about 300,000 km/s in a vacuum. Light has properties of propagation in straight lines, reflection off surfaces, and refraction when passing between different mediums. Shadows are formed when an opaque object blocks light, and solar and lunar eclipses occur due to the alignment of the sun, moon, and earth. The human eye can see visible light, but defects like myopia, hypermetropia, and astigmatism affect vision.
The Physics of Light, ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not. ... Like all types of EM radiation, visible light propagates as waves. However, the energy imparted by the waves is absorbed at single locations the way particles are absorbed.
1. Light travels in straight lines and can be reflected or refracted. Reflection occurs when light bounces off a surface, while refraction is when light changes speed and direction when passing through different materials.
2. Mirrors come in different shapes that determine whether images are virtual or real, and lenses use refraction to bend light and form images. Concave lenses form virtual images while convex lenses form real images.
3. White light is composed of all visible wavelengths combined, and different materials reflect or absorb particular wavelengths, determining their perceived color. Color mixing with light follows the same principles as mixing with pigments. Filters can be used to selectively transmit or block certain wavelengths of light.
This document discusses the properties of light through a PowerPoint presentation. It covers topics like light traveling in straight lines at very fast speeds, how we see objects based on light reflection, the formation of shadows, and the electromagnetic spectrum. It also discusses reflection off mirrors, the three types of mirrors, and refraction through lenses. The document finishes by covering the topics of color, how white light is made up of the colors of the rainbow, the primary colors of light, and how objects appear different colors based on which wavelengths of light they reflect or absorb.
In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not. ... Like all types of EM radiation, visible light propagates as waves. However, the energy imparted by the waves is absorbed at single locations the way particles are absorbed.
Plane mirrors form virtual images that cannot be projected on a screen. Concave mirrors are used by dentists to magnify images of teeth and for applying makeup. Convex mirrors are installed at dangerous corners of roads and in supermarkets to prevent theft. When light hits mirrors, it follows the laws of reflection where the angle of incidence equals the angle of reflection and the incident ray, normal, and reflected ray are in the same plane. Refraction occurs when light passes from one medium to another of different density, causing it to change direction. This is why objects in water appear closer or bent. Prisms disperse white light into a rainbow spectrum due to differing refraction of colors. Scattering of light by particles in the
This document discusses light sources and how light travels. The main points are:
- The sun is our primary natural light source. Other light sources can be natural or man-made. The moon, water, and mirrors are not true light sources as they only reflect light.
- Light travels in straight lines. When it hits an opaque object, some light is absorbed and the rest is reflected. Transparent objects allow light to pass through, while translucent objects let some light pass through and reflect the rest.
- For us to see, light enters the eye and is focused on the retina. The retina sends this visual information to the brain via the optic nerve to be interpreted. Color is the result of
This document discusses light sources and how light travels. The main points are:
- The sun is our primary natural light source. Other light sources can be natural or man-made. The moon, water, and mirrors are not true light sources as they only reflect light.
- Light travels in straight lines. When it hits an opaque object, some light is absorbed and the rest is reflected. Transparent objects allow light to pass through, while translucent objects let some light pass through and reflect the rest.
- For us to see, light enters the eye and is focused on the retina. The retina sends this visual information to the brain via the optic nerve to be interpreted. Color is the result of
This document discusses light sources and how light travels. The main natural light source is the sun. Light travels in straight lines and can be reflected, absorbed, or pass through materials. For vision, light enters the eye and is processed by the brain to interpret what is seen based on patterns of light and dark or color. Shadows form when light is blocked by an opaque object. The position of the sun throughout the day affects the length and direction of shadows.
This document discusses light sources and how light travels. The main natural light source is the sun. Light travels in straight lines and can be reflected, absorbed, or pass through materials. For vision, light enters the eye and is processed by the brain to interpret what is seen based on patterns of light and dark, color, and movement. Color is the result of which wavelengths of light are reflected or absorbed by an object. Shadows form when light is blocked by an opaque object. The position of the sun causes shadows to change positions and lengths throughout the day.
Our main source of light is the sun. Light is a form of energy that allows us to see and is essential for life on Earth. Plants use sunlight for photosynthesis to produce food and oxygen. Sunlight also warms the Earth and drives weather patterns through heating and wind. Too much sunlight can damage skin and eyes, so protection is needed with long exposure.
1. The document discusses key concepts about light and sound including that light travels in straight lines while sound travels as waves through matter.
2. Key terms are defined such as reflection, refraction, transparent and opaque objects.
3. The document also explores how lenses work, specifically that convex lenses magnify objects while concave lenses make objects appear smaller.
1) Light travels in straight lines and is a form of energy that travels much faster than sound.
2) We see objects because they reflect light into our eyes, and shadows are formed when light is blocked.
3) Mirrors come in plane, convex, and concave shapes and can form real or virtual images depending on their shape and whether the light rays actually meet or appear to meet.
Light is a form of energy that enables vision. Light travels in straight lines, and its direction can be changed via reflection or refraction. Reflection is the change in direction of light when it bounces off a surface like a mirror. The law of reflection states that the angle of incidence equals the angle of reflection. Reflection forms real or virtual images depending on whether light rays converge or appear to diverge. Spherical mirrors like concave and convex mirrors can form real or virtual images of different sizes and orientations. Lenses also refract light to form real or virtual images. Prisms disperse white light into visible colors via refraction.
Uauauajaj I think I need to get you now I think 💞 I can help you out ❤️ I will let sisiisisisisissi the same time different than the other gc's I think 🤔🤔🤔🧐 the same time to go to the said meeting tomorrow at all times and I can get it to me on Monday ni sir kim I will get you some programs in the us that we can go for the next two weeks now I have a few extra hours of sleep and I have some stuff and then I mention that I can do to the body is a little bit of the Filipino people are going to be able it to the office 😜🙂🙂🙂🙂🙂 the morning I have some programs in the us that we are in our prayers I can
An optical device uses light and can be as simple as a mirror or complex like the Hubble Space Telescope. The document discusses the history and workings of microscopes, telescopes, binoculars, lenses, mirrors and light refraction. Key developments include the first microscope invented in the late 16th century leading to microbiology, and the first telescope in the late 17th century revolutionizing astronomy. The basic principles of lenses, mirrors, reflection and refraction are explained through diagrams.
The document discusses how light and vision work, including:
1. Light travels in straight lines from a source and we only see light that enters our eyes.
2. White light is made up of different colors of light that can be separated using a prism.
3. Depth perception relies on the slight differences between images that enter each eye, allowing our brain to triangulate locations.
This document discusses different learning styles and strategies. It suggests that people learn in different ways such as independently by concentrating and revising, or collaboratively by asking questions and listening to others. A variety of learning approaches are recommended including making links between ideas, trying different methods, using imagination, analyzing information, creating projects, and reflecting on learning experiences.
1. Menghitung gaya gravitasi total yang diberikan oleh 3 massa yang terletak pada koordinat tertentu dalam sistem kartesius.
2. Menghitung percepatan gravitasi pada ketinggian 3 kali jari-jari bumi dari permukaan bumi.
3. Menentukan perbandingan kuat medan gravitasi di 2 titik yang berbeda jarak dari pusat bumi.
4. Menentukan berat benda di permukaan planet yang memiliki massa dan jari-jari tertent
Dinamika rotasi dan kesetimbangan benda tegarSuta Pinatih
Dokumen tersebut membahas tentang dinamika rotasi dan kesetimbangan benda tegar. Materi yang diajarkan mencakup momen/torsi, hukum II Newton untuk gerak rotasi, momen inersia, dinamika gerak rotasi, momentum sudut, dan kesetimbangan benda tegar. Guru menerangkan konsep-konsep dasar tersebut beserta contoh penerapannya.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
2. What is light? How does it travel?
What happened when light is blocked?
Why do the leaves look green in the day and almost
black when there‟s no light?
5. If there‟s no light, we would be in the darkness.
Light is form of energy. It has no mass and
cannot be stored in a container.
Light travels in a straight lines unless changes
what it travels through.
Light travels through matter: gases (air), liquids
(water) and solid (glass).
Sunlight travels a distance of 150 million
kilometres before reaching the earth.
Facts about lights
6. Are these light sources?
Moon Water Mirror
No, they aren‟t light sources. Because those objects do
not emit light from itself but they reflect off the light
from other light sources.
8. Rays
A thin line of light coming from a source is
called a light ray.
9. Beams
A bundle of light rays is called a beam of
light. A beam of light can be parallel,
divergent or convergent.
10. How does light travel?
• Light rays travel in straight lines from the light source.
• When it hits an opaque object, some light is absorbed
and the rest reflects off.
• If the object is transparent, light rays pass through it
easily.
• If the object is translucent, some light can pass through,
but the rest of the light will be reflected.
light
source
12. How are shadows formed?
Light rays travel in straight lines, radiating out
from the light source.
If rays are blocked by an opaque object a shadow
forms where the light cannot reach.
If the light source is moved closer to the object,
more light is blocked and a larger shadow is
formed.
light
source
light
source
13. How does sunlight cause
shadows?
6am
8am
9am
12am
2pm 10am
3pm
4pm
7pm
Looking North,
the Sun appears
to rise in the
East...
...and travel across
the sky until it sets
in the West.
The position of the
Sun effects the
position and length of
the shadows created.
Thanks to this natural
phenomenon a sundial
is able to tell us the
time, as long as it is a
sunny day!
16. Mid-autumn festival is celebrated on the 15th of the 8th month in
the Chinese calendar (full moon).
17. Hari Raya Idulfitri is celebrated at the end of Ramadan, marked by the
appearance of new moon on the last evening of Ramadan.
18. Solar eclipse
The moon blocks the light
from the sun
An observer on the earth
will experience total
darkness
The shadow of the moon is
formed on the earth.
19. Key Ideas
1. Light travels in a straight lines.
2. In the ray model of light, straight
lines with arrows are drawn to
represent the path of light rays.
3. Shadows are formed when light is
blocked by an opaque object.
21. How the light is reflected?
i= angle of incidence
r = angle of reflection
normal
Flat mirror
The incident ray, reflected ray and the
normal at the point of incidence all lie in the
same plane.
The „angle of reflection‟ is always equal to
the „angel of incidence‟ (i = r).
22. The texture of the surface affects the type of
reflection that occurs at the surface.
regular reflection
(Specular)
irregular reflection
(Difuse)
34. Convex mirror
The shape bends outwards.
Cover wider field of vision.
The images formed by
convex mirror are upright,
distorted, laterally inverted
and smaller than the
object.
36. The word “AMBULANCE” is written laterally
inverted at the front of an ambulance.
Source: http://brighteststar.org.uk/wp-content/uploads/2013/02/hi-res-ambulance.jpg
37. Key Ideas
1. Reflection is the bouncing of light off the surface. Regular
reflection occurs at the smooth surface while irregular
reflection occurs at rough surface.
2. We use the ray model of light to represent the path taken
by light as it is reflected off a surface.
3. Plane mirror has flat surface. The image formed is
upright, laterally inverted, virtual and the same size as
the object.
4. A concave mirror has a surface that bends inwards. The
image formed is virtual and magnified.
5. A convex mirror has a surface that bends outwards. The
image formed is upright, distorted and smaller.
6. Different types of reflecting surfaces are used for
different purposes.
42. Key Ideas
1. Refraction is the bending of light as
it travels through one medium to
another of a different density.
2. The ray model of light can be used to
show the refraction of light.
3. Object in water appear closer to the
surface than they really are. This is
due to the refraction of light.
43. Dispersion of Light
1. When a beam of white light travels through
a prism, it is split into different colours.
2. This is because the different colours of
white light bend or are refracted towards
the normal through different angles. This
occurs when the beam of white light enters
and leaves the prism.
3. A spectrum of seven colours is produced.
This splitting of white light is called
dispersion.
44.
45. Key Ideas
1. The dispersion of
white light is the
splitting up of white
light into its
component colours.
2. The different colours in white light
are refracted through different angles
by a glass prism. This results in the
dispersion of white light.
46. Colours
White light is made up of seven different
colours (Red, Orange, Yellow, Green, Blue,
Indigo, Violet).
We classify these colours as
primary and secondary
colours.
Primary colours are basic colours that can not be obtained by
mixing other colours together. Primary colours are: red, green,
blue.
Secondary colours are formed by mixing primary clours.
Secondary colours are: cyan, yellow, magenta.
48. How do we see colour?
light
source
Light from most light
sources looks white, but
actually contains all the
colours of the spectrum;
also known as the
rainbow.
If an object looks blue, it
is absorbing every colour
except blue, which is
reflecting off it and
entering your eyes.
If an object looks
orange, it is absorbing
every colour except
orange, which, again, is
reflecting off and
entering your eyes.
If an object looks red...
(You get the idea!)
49. Key Ideas
1. Red, green, blue are primary colours
of light which can be mixed to form
the secondary colours of light : cyan,
yellow and magenta.
2. The colour of an object depends on
the type of coloured light that is
reflected off its surface.
50.
51. Resources
Joan Fong. Lower Secondary Science Matters Volume B Second Edition. Marshall Cavendish.
http://www.childrensuniversity.manchester.ac.uk/interactives/science/brainandsenses/eye/
http://www.cyh.com/HealthTopics/HealthTopicDetailsKids.aspx?p=335&np=152&id=1730
Pictures Credits
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QeWRdZzblfN8lbYh1
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guy_torch_flashlight_beam_1366x768_21690.jpg
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http://0.tqn.com/d/animatedtv/1/0/i/A/quimbybanner.jpg
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sci-assets/programme-assets/images/z_block.jpg