Thermal Energy

True or False: Radiation transfers energy by moving matter.

• True

• False

True or False: A refrigerator changes thermal energy.

• True

• False

True or False: When a substance is cooled it usually expands.

• True

• False

Tags

NGSS.MS-PS1-4

Compared to water, most metals have low specific heat.

• True

• False

True or False: A heat engine is an extremely efficient machine.

• True

• False

Tags

NGSS.HS-PS3-3

Every material has its own specific heat. It is easy to change the temperature of a material with __________.

• high specific heat

• low specific heat

• conduction

• insulation

Tags

NGSS.MS-PS3-4

Water makes a good coolant because it has a ______________.

• high specific heat

• low specific heat

• high boiling point

• low freezing point

A heat engine ____________.

• changes mechanical energy to thermal energy

• changes mechanical energy into electrical energy

• changes thermal energy into mechanical energy

• changes kinetic energy into thermal energy

Tags

NGSS.HS-PS3-3

All objects emit _____ radiation.

• electromagnetic

• kinetic

• thermal

• solar

A bimetallic coil is used in a thermostat because ____________.

• the two metals heat and cool at different rates

• it is cheap

• a single metal would be too small

• the two metals have different roles in the operation of the machine

Tags

NGSS.MS-PS3-3