Flashcards
infrared radiation
Cards in this deck (8)
- 1What is infrared radiation?thermal radiation emitted by the Sun
- 2all objects emit...... and absorb infrared radiation.
- 3How does infrared radiation depend on the temperature of an object?the hotter an object, the more infrared radiation it emits in a given time
- 4What is blackbody radiation?a perfect black body is an object that absorbs all the radiation that hits it
- 5Does an object's temp increase or decrease as it absorbs radiation faster than it absorbs it?the object's temperature will increase
- 6Why do rescue teams use light-coloured, shiny blankets to keep survivors warm?it emits a lot less radiation than a dark, matt surface, keeping the patient more warm
- 7What does the Earth's temperature depend on?• the absorption of infrared radiation emitted from the Sun
• the emission of radiation from the Earth's surface - 8How does the build-up of gases in the atmosphere lead to global warming?these gases absorb the radiation and then emit it back to the surface, which makes Earth a lot warmer than it would be it these gases were not in the atmosphere
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- Description
- • 2.2: infrared radiation • 2.3: more about infrared radiation
- Created by
- Farha Idrees
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