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15 Cards in this Set
- Front
- Back
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What are electromagnetic waves?
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a form of energy that can move through the vacuum of space
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What is radiation?
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the direct transfer of energy by electromagnetic waves
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What kinds of energy do we recieve from the sun?
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Most of the evergy from the sun travels to Earth in the form of visible light and infrared radiation. A small amount arives as ultraviolet radiation
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What is visible light?
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it includes all of the colors that you see in a rainbow and the different colors are the result of different wavelengths. Red and orange have the longest wavelenghts, blue and violet have the shortest wavelengthss
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What is infrared radiation?
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has wavelengths that are longer thanred light. It is not visible but you can feel the heat
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What is ultraviolet radiation?
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an invisible form of energy with wavelengths that are shorter than violet light. this can cause sunburns, skin cancer, and eye damage
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What happens when Earth's surface is heated?
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it radiates most of the energy back into the atmosphere as infrared radiation
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What is the greenhouse effect?
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the process by which gases hold heat in the air
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What is temperature?
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the average amount of energy of motion of each particle of a substance
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What is thermal energy?
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the total energy of motion in the particles of a substance
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What is the instrument that measures temperature?
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thermometer
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How is heat transfered?
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radiation, conduction, and convection
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What is conduction?
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the direct transfer of heat from one substance to another substance that is touching
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What is convection?
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the transfer of heat by the movement of a fluid
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What is radiation?
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the direct transfer of energy by electromagnetic waves
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