Heat and Heat Transfer

Front

What is heat?

Back

Heat is a form of energy that is transferred between objects due to a temperature difference.

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) 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 infrared radiation.

Front

What happens to molecules in a gas or liquid when they are heated?

Back

When heated, molecules spread out, become less dense, and rise.

Front

What is specific heat?

Back

Specific heat is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius.

Front

How does a fireplace heat a house?

Back

A fireplace heats a house primarily through convection, as warm air rises and circulates throughout the space.

Front

What is thermal energy?

Back

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

Front

What is the difference between temperature and thermal energy?

Back

Temperature measures the average kinetic energy of particles, while thermal energy is the total energy of all particles in a substance.

Front

What is the role of density in convection?

Back

In convection, less dense (warmer) fluids rise while denser (cooler) fluids sink, creating a circulation pattern.