Flashcard on Thermal Energy

Front

What happens to the molecular motion of water when it absorbs heat from a hotter substance?

Back

Water molecules will move faster as heat energy flows from the hotter substance to the water.

Front

How does lubricating the moving parts of a turbine affect its efficiency?

Back

Lubricating reduces the energy lost as heat, increasing the efficiency of the turbine.

Front

What type of energy transfer occurs when food is heated in a microwave?

Back

Radiation.

Front

What form of thermal energy transfer is exemplified by starlight reaching Earth?

Back

Radiation.

Front

What remains constant in a car engine when gasoline is burned?

Back

The total amount of energy.

Front

Define thermal energy.

Back

Thermal energy is the total kinetic energy of particles in a substance, related to temperature.

Front

What is conduction?

Back

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

Front

What is convection?

Back

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

Front

What is radiation in the context of thermal energy transfer?

Back

Radiation is the transfer of energy through electromagnetic waves, such as light.

Front

Explain the concept of energy conservation in thermal processes.

Back

Energy conservation states that energy cannot be created or destroyed, only transformed from one form to another.