6.1 What is a wave?
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Introduce waves as disturbances that transfer energy, Introduce software used in the unit to revise the link between pitch and frequency, Demonstrate transverse and longitudinal waves
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Types of waves
There are two main types of progressive waves: transverse waves and longitudinal waves. Transverse waves involve particle motion perpendicular to the direction of wave propagation, with crests and troughs. Longitudinal waves involve particle motion parallel to propagation, characterized by regions of compression and rarefaction where particles are close together or spread apart.
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Okay, here are the steps:
- Frequency (f) = 4 Hz
- Wavelength (ฮป) = 0.75 m
- Use the formula: Speed (v) = Frequency (f) x Wavelength (ฮป)
- v = f x ฮป
- v = 4 Hz x 0.75 m
- v = 3 m/s
Therefore, the speed of the transverse wave is 3 m/s.
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Okay, here are the steps:
- Frequency (f) = 4 Hz
- Wavelength (ฮป) = 0.75 m
- Use the formula: Speed (v) = Frequency (f) x Wavelength (ฮป)
- v = f x ฮป
- v = 4 Hz x 0.75 m
- v = 3 m/s
Therefore, the speed of the transverse wave is 3 m/s.
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This document provides information about Priya Raj. R, their option of Physical Science, and registration number. It then discusses different types of waves including mechanical waves, electromagnetic waves, matter waves, and gravity waves. It describes longitudinal waves as having particles moving parallel to the direction of propagation, while transverse waves have particles moving perpendicular. Examples of different wave types are given. Characteristics of transverse waves like wavelength, crest, trough, and frequency are defined. The relationship between velocity, frequency, and wavelength of a wave is stated.
Waves Presentation
This document provides an overview of key concepts related to waves, including:
- Waves carry energy through oscillations without carrying matter. Amplitude determines energy level.
- Transverse waves oscillate perpendicular to the direction of travel, while longitudinal waves oscillate parallel.
- The speed of a wave is calculated using the equation speed = wavelength x frequency.
- Electromagnetic waves include visible light, radio waves, microwaves and more, traveling at the speed of light. Different frequencies have different wavelengths and applications.
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7La/1
The document summarizes key facts about the Earth:
1) The planet we live on is called Earth. It gets its heat and light from the Sun. The Moon is Earth's natural satellite and orbits Earth once every 28 days.
2) A diagram labels that one side of Earth experiences nighttime while the other experiences daytime due to its rotation on its axis.
3) Additional facts provided are that Earth's year has 365 days, a leap year occurs every 4 years, Earth orbits the Sun in 365.25 days, and Earth completes one spin every 24 hours.
7 l1 the earth in space
A day is the time it takes for the Earth to spin on its axis. A month is the time it takes for the Moon to orbit the Earth. A year is the time it takes for the Earth to orbit once around the Sun. The document contains information about the definitions of a day, month, and year according to the movement and positions of the Earth, Moon, and Sun in space. It also lists learning objectives about describing and explaining the motions that cause days, months, years, and seasons.
7 l target sheet
This document outlines learning objectives related to understanding the motion of objects in space, including: how the Earth revolves around the sun and rotates on its axis, causing day/night and seasons; how the tilt of the Earth's axis causes seasons; why we see phases of the Moon and solar/lunar eclipses occur; how to distinguish between stars and planets based on their motion; and how our understanding of the universe has developed over time through scientific observation.
Making a loudspeaker
Sounds are produced by vibrations that travel through a medium such as air. The document discusses how to construct and test a loudspeaker. It instructs the reader to plug in the speaker, turn on the voltage, switch it on at the mains, and listen as they move their ear closer to identify how the sound changes and what causes this. The learning objectives are to describe how sounds are produced, construct a loudspeaker, and explain how a loudspeaker works.
Sound homework
Pupils conducted a sound experiment in a playground to investigate how walls cast sound shadows. They took sound level measurements at various points around the playground using a sound meter after making a standard sound. The measurements showed lower sound levels in positions located behind walls and structures relative to the sound source, demonstrating the shadowing effect of walls on sound propagation.
May the forces be with you
This document discusses forces, mass, and acceleration. It provides examples of calculating acceleration using the equation F=ma. It includes sample problems such as determining the force needed to accelerate a space shuttle or the acceleration of a cyclist pedaling with a given force. Practice problems are provided for students to calculate acceleration, force, or mass given two of the three variables.
6.3 food glorious food
Food contains chemical energy that originally comes from the Sun. The amount of energy a person needs each day can vary depending on factors like their body size, age, gender, activity levels, and environmental conditions like temperature. While two people may consume the same amount of energy, one may still gain weight due to differences in their metabolism or physical activity levels.
Assignment 6.1
This document contains instructions and questions for Assignment 6.1. Students are instructed to show all working and include relevant units. The questions involve calculating quantities using given values and units, including multiplying and dividing measurements in m, m3, ml, and kg/m3. Conversions between standard and scientific notation are also required.
Assignment 6.2
This document contains a possible table of results that shows temperature readings in degrees Celsius taken at 11:00, 12:00, 13:00 and 14:00 hours each day from Monday to Friday. The temperatures generally increase throughout the day, with the highest readings occurring between 13:00 and 14:00 hours each afternoon.
6.4 bending light
The document discusses the refraction of light and how it causes optical illusions. It explains that when light travels from one material to another of different density, it changes direction. Specifically, light bends toward the normal when moving to a denser material, and away from the normal when moving to a less dense material. The document provides instructions for an experiment to observe and measure the refraction of light through a glass block at different angles of incidence.
6.4 bending light
Light changes direction when moving between different materials due to refraction. An experiment is described where a glass block is used to refract light rays entering at various angles, and the angles are measured and graphed. The graph shows the relationship between the incident and refracted angles, with the refracted angle increasing as the incident angle increases. This property of refraction is important for applications like lenses and understanding optical illusions.
Assignment 6.1 answers
This document contains 6 math questions requiring calculations with units. Question 1 involves multiplying two lengths. Question 2 gives a length. Question 3 involves (a) multiplying three lengths and (b) multiplying the results of part a. Question 4 involves (a) converting ml to m3 and (b) writing the answer in scientific notation. Question 5 involves (a) calculating length and volume and (b) calculating density. Question 6 involves calculating volume and density. Full working and units are required for all answers.
6.4 bending light
1. Light changes direction when moving between different materials due to refraction. Scientists studying refracting telescopes need accurate information on how light refracts when moving between air and glass.
2. An experiment is described where light passes through a semicircular glass block and the angle of refraction is measured for different angles of incidence.
3. The results are plotted on a graph showing the relationship between incident and refracted angles, helping to understand how optics can correct vision problems.
5.8 current and pd in a circuit
The document discusses a circuit with two components in series, a resistor and a buzzer, that have different resistances. It asks what the potential difference (p.d.) is across each component and what this reveals about their relative resistances. It then provides learning objectives and example calculations for current, potential difference, and resistance in series circuits.
Speed and velocity
The document discusses key concepts related to speed, velocity, distance, and time. It provides definitions of speed, distance, displacement, velocity, and average and instantaneous speed. Examples are given to illustrate the difference between distance and displacement. Graphs showing variations in distance and velocity over time are presented, and the relationships between distance, time, speed, velocity, and their equations are summarized in a table.
Document in windows internet explorer
The document describes an experiment to determine the laws of reflection. [1] Students are instructed to use a mirror, light source, and protractor to measure the angle of incidence and reflection of light rays. [2] They will shine light at a mirror from various angles and measure the corresponding reflected angles to see if the angle of reflection equals the angle of incidence. [3] By plotting their results on a graph, students can evaluate whether the evidence supports the statement that the angle of reflection equals the angle of incidence.
6.3 giant mirror
A village in Italy installed a large mirror on a mountain opposite their village to direct sunlight into the village. The mirror helped brighten the village by reflecting sunlight into the dark areas between the mountains. Villagers could now grow crops that previously did not receive enough sunlight. The mirror demonstrated how reflected light can help illuminate dark spaces.
6.2 energy everywhere
This document discusses different types of energy, including potential energy which is stored or hidden energy that has the ability to do work, and kinetic energy which is energy of motion. It lists learning objectives about forms of energy and energy transfers. The rest of the document appears to contain questions at different levels about energy, asking about heat energy, potential vs kinetic energy, energy transfers, examples of potential energy storage, and drawing energy transfer diagrams.
Mark scheme
This document is a coursework assessment form for a GCE Advanced Subsidiary physics course. It provides criteria for evaluating student coursework in 5 areas: [1] the quality and independence of the student's research briefing, [2] the use and understanding of physics demonstrated, and [3] the selection, summarizing, explanation, and [4] understanding/critical thinking shown in the student's work. Scores from 1-5 are given for each criterion, with 5 being the highest score. The form also includes the student's name and ID number for record keeping purposes.
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1. The document provides guidance for students on completing a research briefing on a topic of their choosing in physics.
2. Students are instructed to independently research their topic from a variety of sources, consider the social or historical context of the physics, and communicate their findings in a 2000 word written report.
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6.1 What is a wave?
- 1. The wave model of radiation 21st Century Physics
- 2. 10 October 2010 6.1 What is a wave? How many types of wave have you heard of in everyday use? Do they have anything in common?
- 3. Aims Introduce waves as disturbances that transfer energy Introduce software used in the unit to revise the link between pitch and frequency Demonstrate transverse and longitudinal waves
- 5. What is a wave? A wave is a disturbance moving through a material
- 6. What causes a wave? The source of a wave is always something thatvibrates The material that the wave travels through is called the medium
- 9. Low frequency, high period High frequency, low period
- 10. Transverse T
- 11. Transverse The particles of the medium vibrate at right angles (perpendicular) to the direction in which the wave moves
- 13. Longitudinal The particles vibrate (oscillate) back and forth creating a continuing wave of pulses
- 18. Water waves
- 19. Homework