K FSE

This table shows some sources of heat.

Which source(s) will transfer heat through convection?

• 1 only

• 1 and 2 only

• 2 and 3 only

• 3 and 4 only

Which condition must be present for the transfer of energy between two substances to take place?

• The objects must both be solids.

• The objects must be at the same temperature.

• The objects must be at different temperatures.

• The objects must transfer energy without the use of matter.

On a warm sunny day, a lizard sits on a rock. Which word explains why the lizard feels heat from the sun?

• conduction

• convection

• radiation

• insulation

Mohammed knows that conduction is a form of heat energy transfer. Which transfer of heat energy is made through conduction?

• hand heats a snowball

• Electric space heater warms a home

• boiling water heats pasta

• sun warms a greenhouse

Ray holds an ice cube in his hand. After some time passes, the ice cube begins to melt. Which word describes the process of heat transfer?

• conduction

• convection

• radiation

• insulation

Look at the picture below. After a while the soup gets hotter. Which explains why the soup gets hot?

• conduction

• convection

• radiation

• insulation

Yasser has two metal cups and two foam cups. He places one of each type on a metal plate and one of each type on a foam plate. He then fills each cup with very hot water

Which cup of water will lose heat the fastest?

• 1

• 2

• 3

• 4

Yasser has two metal cups and two foam cups. He places one of each type on a metal plate and one of each type on a foam plate. He then fills each cup with very hot water

Which cup of water will lose heat the slowest?

• 1

• 2

• 3

• 4

An insulator is often used to help regulate an object’s temperature. What is also true of an insulator?

• It slows energy transfer.

• It allows heat to pass through easily.

• It provides heat to keep materials warm.

• It can also be a good conductor.

Mazen fills a thermos with hot soup. Which is a property of the thermos?

• The thermos allows heat to pass through easily.

• The thermos provides heat to the soup.

• The thermos does not allow heat to pass through easily.

• The thermos uses outside heat to keep the soup warm.