Heat

The transfer of thermal energy from one material to another by electromagnetic waves

• conduction

• specific heat

• radiation

• convection

the transfer of thermal energy between materials because of collisions between the particles; direct contact

• conduction

• specific heat

• radiation

• convection

the amount of thermal energy it takes to raise the temperature of 1 kg of material by 1^oC

• conduction

• specific heat

• radiation

• convection

the transfer of thermal energy in fluids by the movement of particles from one part of a material to another

• conduction

• specific heat

• radiation

• convection

Which material is a good thermal conductor?

• cloth

• water

• metal

• wood

In which material would thermal expansion and thermal contraction be the most noticeable?

• the water in a cup

• the air in a balloon

• the metal parts of a car

• wooden steps on a porch

Thermal energy from the Sun transfers to Earth by

• radiation

• convection

• conduction

• convection currents

A temperature change in a substance always indicates that the

• state of the substances has changed.

• kinetic energy of the particles has changed.

• potential energy of the particles has changed.

• mechanical energy of the substance has changed.

As water undergoes a state change, its

• temperature and thermal energy change.

• temperature and thermal energy stay the same.

• thermal energy changes and its temperature stays the same.

• temperature changes and its thermal energy stays the same.

The temperature at which all particle motion stops is

• 0 Kelvin

• 0^o Celsius

• 373 Kelvin

• 32^o Fahrenheit