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2 cards from this section. Quick, good the night before a test.
What is radiation?
Think about how heat can travel without a medium.
Name an example of radiation.
Consider how we feel warmth from the sun.
What is the primary mode of heat transfer that does not require a medium?
Think about how we receive warmth from the sun.
True or False: Radiation can occur in a vacuum.
Remember how the sun's heat reaches us.
If you're 150 million kilometers away from the sun, how does sunlight reach Earth? Discuss the mechanism behind radiation.
Think about how energy travels in waves.
A person stands 1 meter away from a heater. If they move to 2 meters away, how does the radiation intensity change? Calculate the relative intensity using the inverse square law for radiation.
Consider how distance affects the spread of heat.
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