Heat Transfer Check Up

Front

The transfer of heat from one substance to another through direct contact is _______________.

Back

conduction

Front

What happened to the temperatures of the hot water and cold water from 0 hours to 4 hours?

Back

The thermal energy of the hot water decreased and the thermal energy of the cold water increased.

Front

What was the approximate temperature of the hot water after 30 minutes?

Back

125° F

Front

Convection cannot occur in ___________ because the molecules are packed too closely.

Back

solids

Front

The form of energy associated with the movement of atoms and molecules in a material is _______________.

Back

heat

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as light, and does not require a medium.

Front

What is thermal equilibrium?

Back

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

Front

What is the difference between conductors and insulators?

Back

Conductors are materials that allow heat to flow easily (e.g., metals), while insulators are materials that resist heat flow (e.g., wood, plastic).

Front

What is the role of temperature in heat transfer?

Back

Temperature is a measure of the average kinetic energy of particles; heat transfer occurs from areas of higher temperature to areas of lower temperature.