Heat Summary

Heat is a form of

The surrounding temperature is always the same.

• yes

• no

When an object gains heat, it _______.

When an object _____ heat, it contracts.

Which substance expands the most when heated?

• gas

• liquid

• solid

• They all expand by the same amount.

Which substance will contract the least when cooled down?

• They all contract by the same amount.

• iron

• water

• oxygen

How can you open the tight metal cap of a ketchup bottle?

• Heat the cap only

• Cool the cap only

• Heat the bottle only

• Heat the bottle and cap

A thermostat is used to control temperature. It is used in _______.

• printer

• electric iron

• thermometer

• radio