04 waves and er day 4
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This document discusses electromagnetic radiation and its characteristics of reflection, absorption, and transmission. It begins with learning objectives and an agenda for discussing these characteristics. Examples are provided for each characteristic, such as mirrors for reflection, blacktop absorbing heat for absorption, and radio transmissions for transmission. Key definitions are also given, such as reflection occurring when a wave changes direction at a boundary between two mediums.
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04 waves and er day 4 james-pc
This document discusses properties of electromagnetic radiation including reflection, absorption, and transmission. It begins with objectives and an agenda for the lesson which includes discussing these three properties of electromagnetic radiation, finishing worksheets from the previous day, and homework. Examples of reflection include laser rangefinding, ham radios, radar, and sonar. Absorption examples include radar absorbent material, the urban heat island effect, blacktop pavement, and singing booths. Transmission examples given are ground penetrating radar, directed sound denial systems, radio stations, X-rays, MRI machines, and CT scans.
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This document discusses remote sensing and the interactions of electromagnetic radiation with the atmosphere and Earth's surface. It covers three main topics:
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What is the light spectrum of different visible light sources
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Visible light PPT Electromagnetic wave ......,,,,,,,,,,,,,,,,,,,,
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The document discusses various physics concepts related to the wave-particle duality of light, including interference, diffraction, polarization, and the photoelectric effect. It provides examples of these concepts, such as thin film interference seen in soap bubbles and discusses experiments like the Michelson-Morley experiment and LIGO that study properties of light and gravity waves. The key point is that light must be understood as both a wave and particle based on experimental evidence.
Rs and gis lect 3-6.pdf
The document discusses electromagnetic remote sensing and the electromagnetic spectrum. It describes the remote sensing process which involves energy sources, propagation through the atmosphere, interaction with earth surfaces, sensors to record reflected energy, and generation of sensor data. It also discusses the electromagnetic spectrum in detail, including different wavelength regions, wave and particle theories of electromagnetic radiation, blackbody radiation laws, and energy interactions within the atmosphere and with earth surfaces.
P2 radiation and life
1. The document discusses electromagnetic radiation and its various uses including communication technologies like radio, TV, and WiFi.
2. It explains how different types of electromagnetic radiation such as infrared, microwaves, and radio waves are used to transmit information over long distances.
3. The document also covers topics like how digital signals make communication more robust than analog by sending information as discrete pulses rather than continuous waves.
13 March 5 Microwaves, Polarization
The document discusses an upcoming physics exam and various topics related to waves, including:
- An upcoming quiz, exam, and assignments related to light as a wave and microwave radiation.
- Properties of different types of waves like transverse and longitudinal waves. Displacements of waves along different axes are discussed.
- Polarization of electromagnetic waves including linear and circular polarization. Applications of polarized light like 3D movies and sunglasses are mentioned.
- Characteristics of microwave radiation like wavelength and frequency are covered. Microwave ovens and standing waves are discussed.
Waves and sound grade 10
properties of waves, light and sound
general waves properties
light
electromagnetic spectrum
sound
3 solar radiation and greenhouse effect
The document discusses solar energy, including how it is generated by the sun, its different forms (heat and electricity), and how it can be harnessed and converted for useful purposes. Some key points made include:
- Solar energy is an inexhaustible and environmentally clean source of energy that is freely available in many parts of the world.
- It can be captured and converted into heat or electricity through various technologies like solar collectors, photovoltaic cells, and concentrating solar power systems.
- Capturing solar energy involves collecting, converting, and storing it since it is a diffuse source that varies over time and location.
SolarRadiation 29.06.23.pptx
The document discusses concepts related to solar radiation, including:
1. The objectives are to review properties of solar radiation, determine the theoretical upper limit of solar radiation at Earth's surface, and determine the sun's position and beam radiation direction on surfaces of various orientations.
2. Solar radiation transfers energy via electromagnetic waves from the sun to Earth within 8 minutes.
3. Radiation is defined by its wavelength, with the sun emitting most strongly in the visible light spectrum.
4. Factors like atmospheric composition and clouds influence the solar radiation that reaches Earth's surface.
chapter2: Remote sensing
Remote sensing uses electromagnetic radiation (EMR) reflected or emitted from the Earth's surface to detect and identify surface features. EMR interacts with the atmosphere and surface in different ways depending on its wavelength. Shorter wavelengths like visible and infrared radiation are either absorbed or scattered in the atmosphere by gases, particles and moisture. Remote sensing instruments measure reflected solar radiation and emitted terrestrial radiation to understand surface properties.
Heat Transfer Lectures for mechnaical engineering.pdf
lecture notes for heat transfer , mechanical engineering
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1. The document discusses various wave phenomena including reflection, refraction, interference, superposition, diffraction, and Young's double slit experiment.
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3. Refraction is when a wave changes direction passing from one medium to another due to a change in speed. The laws of refraction state that the incident, normal, and refracted rays lie in the same plane and the sines of the angles follow a ratio determined by the medium.
Remote sensing introduction 1 9-14
Remote sensing refers to obtaining information about objects or areas from a distance, without making physical contact. It involves emitting radiation or signals and detecting and measuring any radiation or signals that are reflected or emitted back. The document provides an overview of remote sensing, including how it relates to basic human senses and how instruments are used to gather spatial data on properties of targets from a distance. It also discusses how solar radiation interacts with the atmosphere and Earth's surface through absorption, reflection, scattering, and transmission and the role of these processes in Earth's radiation balance.
Astonishing Astronomy 101 - Chapter 3
This document provides a summary of key concepts about electromagnetic radiation and astronomy. It discusses how electromagnetic radiation allows us to obtain information about stars and planets without visiting them. It describes the electromagnetic spectrum, including visible light, infrared, ultraviolet, X-rays and gamma rays. Important figures like Maxwell, Hertz, and laws like Wien's law, the Stefan-Boltzmann law and the Doppler effect are explained. Blackbody radiation is also summarized.
Thermal remote sensing
Thermal remote sensing measures the radiation emitted from surfaces using infrared wavelengths. It is based on the infrared portion of the electromagnetic spectrum, specifically the mid-wave and long-wave infrared. Thermal remote sensing is commonly performed using wavelengths between 8-14 micrometers, which corresponds to an atmospheric window and the peak emissions of most earth surfaces. It obeys fundamental radiation laws including Planck's law, Wein's displacement law, and Stefan-Boltzmann law. Emissivity describes an object's ability to emit radiation and is affected by properties like color, roughness, and moisture. Thermal remote sensing has applications in measuring land and ocean temperatures, detecting fires and monitoring volcanoes.
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This document discusses electromagnetic radiation (EMR) and its interactions with the atmosphere and Earth's surface in the context of remote sensing. It describes how EMR propagates from its source and interacts with the atmosphere through scattering and absorption mechanisms like Rayleigh scattering, Mie scattering, and absorption by gases like ozone, carbon dioxide, and water vapor. It also discusses how EMR interacts with the Earth's surface through absorption, reflection, and transmission and how these properties are measured remotely.
Laser characteristics as applied to medicine and biology
Laser” is an acronym for light amplification by stimulated emission of radiation. A laser is created when the electrons in atoms in special glasses, crystals, or gases absorb energy from an electrical current or another laser and become “excited.”Characteristics ,working ,types and application of lasers exclusively in medicine and biology.
Interactive Textbook Ch. 22 The Nature of Light
1) The document discusses the electromagnetic spectrum, which is made up of different types of electromagnetic waves ranging from gamma rays to radio waves.
2) It explains that electromagnetic waves, including visible light, transfer energy and have different wavelengths and frequencies, though all travel at the same speed in a vacuum.
3) Radio waves, microwaves, infrared waves, visible light, ultraviolet light, and other types of electromagnetic waves are described along with their common uses such as broadcasting, communication, heating food, night vision, and more.
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2 10 abiotic factors ms.ls2
This document provides instructions and information for a science class lesson on ecosystems and abiotic factors. It includes the learning target which is to explain how abiotic factors affect ecosystems. It lists different ecosystem types and instructs students to read an article about abiotic factors affecting populations in China. Students are asked to write down the main argument, facts supported by empirical data, and annotate the article in preparation for discussion the next day.
2 2 food webs ms.ls2
This document contains notes from a biology class discussing various topics related to ecosystems and food webs. The notes include announcements about joining an online discussion, the day's learning target about visualizing trophic interactions via food webs, upcoming units on ecosystem complexity and invasive species, discussions on tests and reviews, and activities for students at different performance levels.
2 2 food webs ii ms.ls2
The document discusses abiotic and biotic factors in ecosystems, including 7 abiotic factors like topography, climate, pollution, and solar energy input that can affect populations. It also introduces biotic components like introduced species. Students are tasked with planning a model ecosystem by listing biotic and abiotic factors and organizing what jenga block biotic components like producers, primary consumers, and secondary consumers would represent.
1 30 changes in biological systems and last test review ii ms.ls2
This document provides an agenda and notes for an ecology class. It includes the following:
- An introduction to discussing invasive species and their impacts on ecosystems.
- Plans for students to work on either reviewing for a past test or building a food web, depending on their previous test scores.
- Announcements about an upcoming unit on constructing arguments about how changes to ecosystems affect populations and evaluating designs to maintain biodiversity.
- Notes on the complexity of ecosystems and definitions of biological components like communities, populations, and the difference between communities and ecosystems.
1 30 changes in biological systems and last test review ms.ls2
This document provides an agenda and notes for an ecology class. It includes the following:
- An introduction to discussing invasive species and their impacts on ecosystems.
- Plans for students to work on either reviewing for a past test or building a food web, depending on their previous test scores.
- Announcements about an upcoming unit on constructing arguments about how changes to ecosystems affect populations and evaluating designs to maintain biodiversity.
- Notes on the complexity of ecosystems and definitions of biological components like communities, populations, and the difference between communities and ecosystems.
1 29 changes in biological systems and last test review ms.ls2
1) The document discusses introducing students to a unit on invasive species and their impacts on ecosystems.
2) Students are asked to read articles about specific invasive species, take notes, and become experts on the impacts and characteristics of the species they read about.
3) The class will then discuss commonalities between invasive species and how the introduction of a new species differs from the reintroduction of a species.
1 28 changes in biological components of ecosystem ms.ls2
This document discusses the key components of ecosystems, including biotic (living) and abiotic (non-living) factors. It describes the physical relationships between producers, consumers, decomposers, and their interactions. It also covers population balances, energy flow through trophic levels, and the importance of biodiversity. The document provides definitions and examples to explain ecological concepts in ecosystems.
1 28 changes in biological components of ecosystem ii ms.ls2
The document discusses the biological components of an ecosystem. It identifies four main biotic components:
1) Producers (plants) that produce their own food through photosynthesis.
2) Consumers at different trophic levels, including primary consumers (herbivores that eat plants), secondary consumers (carnivores and omnivores that eat herbivores) and tertiary consumers (top predators).
3) Scavengers that eat and break down dead consumers.
4) Decomposers like bacteria and fungi that break down remains and release nutrients back into the environment.
15 research debrief
This document provides guidance and instructions to students for an upcoming research and presentation project on animal de-extinction. It discusses the day's agenda, expectations for research and presentation preparation. Tips are provided on moving from an unprepared "Buster" to a well-prepared "Betty" or exemplary "Thomas" through knowing requirements, current abilities, and areas for improvement. Students are guided to reflect on strengths and weaknesses from prior work, and create a plan to accomplish remaining goals in order to be successful.
02 heredity animal activity
This document provides an overview of a life science class unit on heredity and the inheritance of traits. It outlines the day's activities, which include discussing traits versus alleles, designing a hypothetical designer classroom pet by selecting and combining traits from different species, and reflecting on the challenges of owning such a chimera as a real pet. Students are asked to draw and describe their ideal pet, selecting traits to modify and explaining the advantages of their creation.
03 human impacts day 3 laptop
The document discusses various interior natural hazards including earthquakes, volcanoes, and sinkholes. For earthquakes, it provides general facts about frequency and magnitude scales. It also describes earthquake hazards such as liquefaction, falling debris, and secondary hazards. For volcanoes, it gives general facts about locations and provides details on hazards from eruption columns, gases, lava flows, pyroclastic flows, landslides, and lahars. It also examines a 1985 volcanic disaster in Colombia. For sinkholes, it discusses their formation process and increasing property damage claims.
11 human impacts presentation prep day 11
This document provides guidance for students creating presentations on human impacts issues. It outlines that presentations should clearly walk through defining a problem, collecting data, interpreting data to create a focused solution, and applying that solution. Presentations need to address an actual human impacts issue and use at least three visual aids. Students are encouraged to make their presentations clear, creative, appealing, and to divide work equally among team members. Time is provided for students to work on their presentations.
06 human impacts day severe wx processes 6
This document provides information about various natural hazards caused by severe weather processes and how their impacts can be mitigated. It begins with an agenda that includes discussing severe weather hazards and how to reduce their negative impacts, along with announcements about an upcoming quiz and tests. The document then discusses different types of severe weather hazards including tornadoes, hurricanes, and their risk maps. Tornadoes are most common in the central US region known as Tornado Alley due to interactions between warm, moist Gulf air and cooler, drier Canadian air. Hurricanes present hazards like intense wind, flooding from storm surges, and tornadoes, and mostly impact the Gulf and East Coasts due to cooler Pacific waters. The document encourages reflection on provided
08 human impacts design a method part i day 8
This document discusses negative human impacts on the environment. It begins with examples of negative impacts like nuclear meltdowns and releasing non-biodegradable materials. Human impacts are then categorized as water usage, land usage, and pollution. Specific examples are given for each category, such as diverting water for agriculture leading to the shrinking of the Aral Sea, deforestation of the Amazon rainforest for cattle ranching, and air pollution causing smog. Students are engaged to discuss and identify additional examples of problems for each impact category.
04 human impacts day 4
1) The document discusses different types of interior hazards including earthquakes, volcanoes, and sinkholes. It provides general facts about each hazard as well as the hazards they can cause.
2) Specific hazards from earthquakes mentioned include liquefaction, falling debris from collapsed buildings, and secondary hazards from flooding and fires. Volcano hazards include eruption columns, volcanic gases, lava flows, pyroclastic flows, landslides, and lahars. Sinkholes are formed from limestone being dissolved by groundwater.
3) An example case study of the 1985 Armero disaster in Colombia is provided, where a lahar from the Nevado del Ruiz volcano killed over 23,000 people due
07 human impacts day quiz and sub 7
This document provides instructions and information for a physical science class on human impacts and severe weather processes. It includes:
1) A notification that a quiz will be given and instructions must be read carefully to avoid a zero.
2) The objectives and essential questions for the class focus on types of hazards that make up severe weather and forecasting/reducing their negative impacts.
3) Additional reminders that iPads are only for approved educational sites, late work is due, and behavior expectations are outlined.
02 human impacts day 2
This document discusses human impacts from natural hazards such as tornadoes, earthquakes, volcanoes, floods, wildfires and more. It separates natural hazards into three categories: interior processes that stem from inside the earth, surface processes above the earth's surface, and severe weather events. The document provides examples for each category and discusses how collecting data, interpreting it, and applying it can help scientists better understand natural hazards and work to minimize their negative impacts.
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04 waves and er day 4
- 1. PHYSICAL SCIENCE Waves and Electromagnetic Radiation
- 2. Bell Ringer 1.) If you triple the amplitude of a wave, how much more/less energetic is the wave? 2.) How do you determine the amplitude of a compressional wave?
- 3. Objectives ForToday: •Today we are: •Discussing characteristics of electromagnetic radiation: Reflection, Absorption,Transmission
- 4. Agenda/Announcements! •Bell Ringer •Electromagnetic Radiation characteristics •Finish work pages from yesterday •HOMEWORK:Worksheets are dueTODAY.
- 6. The BigThree: Brainstorming Discuss with a partner.What are the best examples you can think of for: 1.) A wave being reflected 2.) A wave being absorbed 3.) A wave being transmitted through a medium Discuss at your table.You have 5 MINUTES!Write your answers (For you and your partner) on your post-it note w/names
- 7. 5 minute sand timer 5 minutes End
- 8. The BigThree: Brainstorming Place your post-it notes under the appropriate categories on the board! Class discussion: What were some of your best ideas?
- 9. The BigThree: Reflection Waves can be reflected Reflection usually comes to mind when we think about light and mirrors. However, all waves can be reflected.
- 10. The BigThree: Reflection Reflection Examples: Laser rangefinding Ham Radios Radar Sonar
- 11. The BigThree: Reflection •Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. •Common examples include the reflection of light, sound and water waves.The law of reflection says that the angle at which the wave is incident on the surface equals the angle at which it is reflected. Mirrors exhibit specular reflection. •In acoustics (sound energy) reflection causes echoes and is used in sonar. In geology, it is important in the study of seismic waves. Reflection is observed with surface waves in bodies of water.
- 12. The BigThree:Absorption Waves can be absorbed by an object – objects that absorb waves tend to have an increase in heat energy
- 13. The BigThree:Absorption Radar Absorbent Material Urban Heat Island Effect Blacktop Pavement Singing Booths
- 14. The BigThree:Absorption Absorption of electromagnetic radiation is the way in which the energy of a photon is taken up by matter, typically the electrons of an atom. The electromagnetic energy is transformed into internal energy of the absorber Example: thermal energy coming off a blacktop The reduction in intensity of a light wave propagating through a medium by absorption of a part of its photons is often called attenuation.
- 16. The BigThree:Transmission Waves can be transmitted through different mediums depending on the power of the wave, the wavelength and the density of the object.
- 17. The BigThree:Transmission Ground Penetrating Radar Directed Sound Denial Systems Radio Stations X-Rays MRI machines CT scans
- 18. The BigThree:Transmission Also known as wave propogation – the movement of a wave through the vacuum of space, or a transmission medium such as a solid, liquid or gas
- 19. Exit Slip Draw an example of a system where all three wave characteristics are present.
Editor's Notes
- This ‘sand timer’ will start on a mouse click anywhere on the slide. The ‘sand’ will drain from the top section to the lower section and when completed will show the word ‘End’.To change the timings of this timer, you need to enter the animation settings, and change the timings for the Isosceles Triangles. There will be 2 that need changing (to the same amount) – one animates the top triangle emptying, whilst the other animates the bottom triangle filling.When you change the timings these have to entered as a number of seconds.