Heat Energy

Which of the following is caused by heat energy?

• ice melting
• wet socks drying in the dryer
• noodles cooking in a pot
• all of the above

Which statement is true about heat energy?

• Heat moves from cool things to warm things.
• Heat moves from warm things to cool things.
• As things lose heat energy, they get warmer.
• As things gain heat energy, they get cooler.

What is temperature?

• a measurement of hot and cold
• a measurement of speed
• location
• heat

When you fry an egg in a pan on a stove, the egg is heated by: 

• evaporation
• convection
• conduction
• friction

When a heater warms your home, the air is heated by:

• evaporation
• convection
• conduction
• friction

How does the sun provide heat to Earth?

• The sun's heat reaches Earth by conduction.
• There is friction between the Sun's radiant energy and Earth's atmosphere.
• The sun's radiant energy reaches Earth and changes into heat. 
• Earth gets closer to the Sun during the daytime. 

Which of these is not an example of a natural heat source?

• a geyser
• a volcano
• the Sun
• an oven

Conduction is related to solids the same way convection is related to 

• heat energy 
• solids and gases
• gases and liquids
• liquids and solids

Which activity for staying warm in a cold forest uses insulation?

• Covering yourself with a pile of dry leaves
• getting out of the wind by climbing to a higher spot
• sitting near a river or lake
• drinking a warm liquid

Which describes the usual movement of warm and cool air?

• Warm air ⋀
  Cold air ⋀
• Warm air ⋁
  Cold air ⋁
• Warm air down ⋁
  Cold air ⋀
• Warm air up ⋀
  Cold air ⋁