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How do you feel in the sunlight? Warm!
Why? The Sun gives off: Light Heat
This heat and light is called … Solar Radiation: heat and light from the Sun
Solar Radiation is reflected and absorbed
Reflection: heat and light bounce off a surface
Absorption: heat and light are taken in by a surface
Solar radiation warms the Earth
Earths atmosphere protects us from most solar radiation
There is no atmosphere in space, so it can get very hot or very cold
Astronauts need extra protection in space from the extreme temperatures
Why else do astronauts need extra protection? No air No pressure space debris
What do Astronauts wear for protection in space?
The Experiment: why are space suits white? You will get two envelopes One light envelope One dark envelope
Place a thermometer inside each envelope
Place the envelopes in the light, record the temperatures, and predict how they will change
Graph your results! 100 ° F 90 ° F 80 ° F 70 ° F 60° F 0 mins 5 mins 10 mins 15 mins 20 mins
Write a Hypothesis: Which color do you think will get warmer and why?
Which envelope was warmer? The dark envelope! Why?
Dark colors absorb light: take heat in get hotter faster
Thats why black asphalt is so hot in the summer
Which envelope stayed cooler? The light envelope! Why?
Light colors reflect light: Heat bounces off Stay cooler
This is why astronauts wear light colored space suits!
Did You Know? Space suits also have built-in air conditioning to help keep astronauts cool!
Heat and Air Temperature
Question of the Day… Does the absorption of sunlight lower or increase Earth’s temperature? 2. How does solar energy reach Earth? 3. Why.
Day Topic: Finish Convection, Begin Radiation
Heat Transfer, Greenhouse Effect, Ozone Layer Notes
The kinetic molecular theory explains that all matter is composed of particles constantly moving in random directions. What are these "particles"? Neutrons.
Science Fair Project: Part 2 Due December 20th. Where are we now? DatesObjectives Check When Completed November Work on finding topics and writing.
Heating of the Earth. Temperature Layers of the Atmosphere.
22.2 Solar Energy and the Atmosphere. What happens to incoming solar radiation? 1.Scattered 2.Reflected 3.Absorbed.
MATTER Read each slide. Look closely at each picture. Answer each question.
Radiation Infra-red radiation transfers heat between all objects. Infra-red radiation is an electromagnetic wave and can travel through a vacuum. Heat.
Thermal radiation Any object that is hot gives off light known as Thermal Radiation. The hotter an object is, the more light it emits. As the temperature.
Chapter 17: The Atmosphere
Chapter 2 Weather Factors
16-1 Energy in Earth’s Atmosphere. (pages 542–545) 1
Seasons Why we have them And some local effects. The Earth tilts The Earth travels around the sun in an ellipse –The tilt of the North of the Earth is.
TIC TAC LESSON Heat and Light
Solar Energy Solar energy is the source of most of Earth’s heat on land, in the oceans and in the atmosphere. When solar energy interacts with air, soil.
Solar Energy & the Atmosphere
Energy Transfer EARTH SCIENCE.
Thermal Energy Chapter 14. Key Ideas What does temperature have to do with energy? What makes things feel hot or cold? What affects the rate that.
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