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infrared cameras


cameras that measure the amount of heat released by an object

An infrared camera detected the amount of heat given off by a hot koala.

  infrared cameras

thermal energy


the energy of moving particles of matter

A stove makes heat, or thermal energy.

  thermal energy

conduction


when heat energy travels from a hotter object to a cooler one

Conduction occurs when your cool hand touches a hot tray. Remember to wear a potholder!

  conduction

photosynthesis


a process in which green plants create food from sunlight, water, and carbon dioxide gas

Green plants perform photosynthesis to make food.

photosynthesis

evaporation


when liquid changes to gas

Evaporation occurs when liquid rain turns to gas.

  evaporation
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