Understanding Heat Energy

Which of the following is a primary source of heat energy on Earth?

• Wind

• The Sun

• Ocean currents

• Moonlight

What natural phenomenon can create heat beneath the Earth's surface?

• Snowfall

• Lightning

• Rain

• Wind

How is heat generated through friction?

• By cooling objects

• By rubbing objects together

• By separating objects

• By freezing objects

Which method of heat transfer involves the movement of heat through liquids and gases?

• Insulation

• Radiation

• Convection

• Conduction

What is an example of a good conductor of heat?

• Wood

• Plastic

• Metal

• Glass