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32 Cards in this Set
- Front
- Back
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When Making A Solar Oven out of a box's,why are the flaps covered with aluminum foil?
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The Box flaps are covered with aluminum foil because they bounce sunlight into the box
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What kind of a lid should you put on a solar oven made out of a box.
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The lid should be plastic or glass to hold heat in.
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What color should the inside of a solar oven be?
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Black paint to obsorb the sun's light.
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What temperature is needed to kill bacteria?
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Temperatures above 75 degrees celcius.
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How long does it take the sun to send to the earth the same amount of the energy that all the world's ppl use in one year.
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every 40 minutes
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What are three problems that must be solved before depending on solar energy for most of our energy?
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Cash,Solar cells producing not enough energy,the amount of energy they need to be made
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Energy moving in waves through space is called ____ ____
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Electromagnetic radiation
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In Waves the top of the wave is called the ___ and the bottom is called the ____
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Crest Trough
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In What direction do waves vibrate after they have past through the polarizing lens?
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Up ^ and Down
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Which are longer X-Rays or Infared Waves ?
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Infared
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Shorter wavelengths have ___ enregy than longer wavelentghes.
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more
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What are the diferent colors in white light?
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Red orange Yellow Green Blue Indigo Violet
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Why is air more dense near the ground?
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Gravity pulls gas particles in the air towards the ground
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How does the earths atmosphere affect shorter waveletghs?
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Block shorter wavelentghs
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Which wavelentghs cause your skin to become sunburned.
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UV Waves
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Why do most UV wavelentghs never touch the ground
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Because of the ozone layer
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Each ozone molecule contains _____ oxegon molecules.
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Three
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What do gases containing CFCs harm?
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Ozone Layer
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What are scientists and government leaders around the world working to do about CFCs
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banning them
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Which wavelentghs are the only ones you can see?
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Visible
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How long does solar energy take to reach the earth
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8 minutes
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Solar cells charge solar energy directly into __-_
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Heat
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Who were the first people to use glass for homes
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Romans
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The Shortest Waveletgh is
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Gamma
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What harms when it is near the ground?
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ozone
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What Traps waves on the ground?
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Greenhouse gases.
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Energy moves in _____ trught space
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waves
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Visible light,X rays, Radio,Uv,are exes of __ ___
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Electromagnetic Radiation
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The distance from one point of a point on a wave to the same piont on the next wave is called the ___
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Wavelength
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Solar Energy Is converted into electrical energy in ____
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solar cells
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Te greenhouse effect s cause the earth to become
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warmer
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one cause of the greenhouse affect is the ___ of ___ and oil
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burning coal
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