Thermal Energy

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, which determines its temperature.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids or gases) caused by differences in temperature.

Front

What is radiation?

Back

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

Front

What is a good conductor of heat?

Back

A good conductor of heat is a material that allows thermal energy to pass through it easily, such as metals like copper and aluminum.

Front

What is an insulator?

Back

An insulator is a material that resists the flow of thermal energy, such as plastic or rubber.

Front

How does the sun heat the Earth?

Back

The sun heats the Earth primarily through radiation, as sunlight travels through space and warms the surface.

Front

Why do dogs lie next to a heat source?

Back

Dogs lie next to a heat source, like a wood stove, to absorb heat through radiation.

Front

What happens to the temperature of water when it is heated?

Back

The temperature of water increases as thermal energy is added, causing the water molecules to move faster.

Front

What is an example of convection in everyday life?

Back

An example of convection is the way warm air rises and cool air sinks in a room, creating a circulation of air.