Heat Transfer Practice Test

A boy touches a stove and gets burned. What transfer of heat caused his hand to get burned?

• radiation

• conduction

• convection

• combustion

People sitting around a campfire are able to feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire?

• The heat from the fire travels through the ground and heats the ground around the people.

• The heat from the fire is conducted through air molecules to the people.

• The heat from the fire rises in the air and then settles around the people.

• The heat from the fire radiates to the people and warms them.

Which is an example of heat transfer by convection?

• a glowing light bulb

• heating the atmosphere

• cooking using a microwave oven

• heating a piece of metal in a flame

Which best describes how heat is transferred?

• Heat only flows within individual substances.

• Heat flows from a warmer substance to a cooler substance.

• Heat flows from a cooler substance to a warmer substance.

• Heat flows in many different directions between substances.

On a hot day in the sun, why does Robert use a foam can holder to keep his drink cool?

• Foam insulates the cold drink.

• Foam reflects cold air from the can.

• Foam reflects cold air from the can.

• Foam conducts heat between the can and the air.

Which best describes a material that could be used as a pan for baking cakes?

• good conductor of cold

• poor conductor of cold

• good conductor of heat

• poor conductor of heat

Jack's wooden baseball bat is in the sun, and the bat cracked. Why?

• The wooden bat cools in the sun.

• The wooden bat evaporates in the sun.

• The sun’s heat causes the wooden bat to expand.

• The sun’s heat causes the wooden bat to contract.

Rays from the sun are shining down on a house, as shown in the illustration. What effect does the sun have on the temperature of the house?

• The temperature of the house increases because heat radiates from the sun.

• The temperature of the house increases because heat is conducted by the sun.

• The temperature of the house decreases because heat is convected by the sun.

• The temperature of the house decreases because the sun absorbs heat from the house.

Which is most responsible for the uneven heating of the air in the atmosphere?

• radiation

• convection

• conduction

• condensation

Which of the following is an example of convection?

• a hot object transferring heat to a cooler one

• hot air rising and cooler air falling

• the rays of the Sun warming the earth

• getting a sunburn