Heat transfer

What is the transfer of heat by movement of liquids or gases?

• conduction

• convection

• radiation

What is the transfer of heat by direct contact?

• conduction

• convection

• radiation

What is a transfer of heat energy by electromagnetic waves through space?

• conduction

• convection

• radiation

You are stirring a bowl of hot soup with a metal spoon. The spoon starts to feel warmer because of _?_.

• conduction

• convection

• radiation

You buy a lava lamp from the store. As the lamp heats up, blobs of liquid rise to the top then sink back down to the bottom. This process continues because of _?_.

• conduction

• convection

• radiation

You are doing your homework at a desk that is underneath a lamp. You start to feel hotter because of _?_ from the lamp.

• conduction

• convection

• radiation

Your best friend has a bunk bed. You move from the bottom bunk to the top bunk and notice that the air is warmer. The warm air rises because of _?_.

• conduction

• convection

• radiation

You are in science class and want to see if the hot plates were used recently. You place your hand near the side of the hot plate. Without touching the hot plate, your hand feels warmer. Heat is transferred to your hand by _?_.

• conduction

• convection

• radiation

You are roasting marshmallows at a campfire. The metal skewer (stick) that you’re cooking your marshmallow on burns your hand because of _?_.

• conduction

• convection

• radiation

What happens when ice cubes melt in a glass?

• Heat travels from the ice to the warmer water.

• No energy is transferred.

• Heat is transferred from the warmer water to the ice cubes.