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Radiation
Understand that thermal radiation is a form of infrared radiation and that all objects emit this type of radiation.
9
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90
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90 min
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CambridgeIGCSEPhysicsThermal physics
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Radiation outcomes9 objectives
- Understand that thermal radiation is a form of infrared radiation and that all objects emit this type of radiation.
- Recognize that thermal energy transfer through thermal radiation does not need a medium to occur.
- Explain how the color (black or white) and texture (dull or shiny) of a surface influence its ability to emit, absorb, and reflect infrared radiation.
- Understand that for an object to maintain a constant temperature, it must lose energy at the same rate it gains energy.
- Know the consequences for an object when the rate of energy intake differs from the rate of energy loss.
- Understand how various factors influence the Earth's temperature by affecting the balance between incoming and outgoing radiation.
- Outline experiments designed to differentiate between effective and ineffective emitters of infrared radiation.
- Outline experiments aimed at distinguishing between effective and ineffective absorbers of infrared radiation.
- Explain how the rate at which an object emits radiation is influenced by its surface temperature and surface area.
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