Heat TransferTest/Review 7th 2024-25

Front

What is the relationship between temperature and kinetic energy of particles?

Back

As the temperature increases, the average kinetic energy of the particles increases.

Front

Which substance has the lowest average kinetic energy?

Back

The substance with the lowest temperature has the lowest average kinetic energy.

Front

How does thermal energy transfer occur between substances?

Back

Thermal energy always flows from the warmer substance to the cooler substance.

Front

What happens to thermal energy when hot noodles are placed in a cooler box?

Back

Thermal energy from the warmer noodles is transferred to the cooler box and the cooler air.

Front

What is the best description of energy transformation when a cheetah eats a gazelle?

Back

Chemical energy is transformed to mechanical energy and thermal energy.

Front

In heat transfer, which direction does heat flow?

Back

Heat flows from the hotter substance to the colder substance.

Front

Define thermal energy.

Back

Thermal energy is the total kinetic energy of all the particles in a substance.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion, which depends on the mass and speed of an object.

Front

Explain conduction in heat transfer.

Back

Conduction is the transfer of heat through direct contact between materials.

Front

Explain convection in heat transfer.

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases).