HMH Energy I 2.2 Temperature and Heat

Front

What is the measure of average kinetic energy of all the particles within an object called?

Back

Temperature

Front

True or False: When two substances reach the same temperature, they are in thermal equilibrium.

Back

True

Front

What happens to the temperature of a substance as the kinetic energy of its molecules increases?

Back

The temperature increases.

Front

What is the process called when warm air rises, as experienced when holding a hand above a coffee cup?

Back

Convection

Front

What is the term for the heat transfer that occurs when you touch a hot object, like a coffee cup?

Back

Conduction

Front

Define thermal equilibrium.

Back

Thermal equilibrium is the state in which two substances in contact with each other reach the same temperature and no heat flows between them.

Front

What is the relationship between temperature and kinetic energy in a substance?

Back

Temperature is directly proportional to the average kinetic energy of the particles in a substance.

Front

What are the three main methods of heat transfer?

Back

Conduction, convection, and radiation.

Front

Explain conduction in terms of heat transfer.

Back

Conduction is the transfer of heat through direct contact between materials, where faster-moving particles collide with slower-moving ones.

Front

What is convection and how does it occur?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.