Topic 4 Review: Thermal Energy

Front

What is thermal energy?

Back

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

Front

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

Back

The molecules move faster as they gain kinetic energy.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact of particles in a solid.

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids and 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

How does thermal energy move between objects?

Back

Thermal energy moves from an object at a higher temperature to an object at a lower temperature.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion; in thermal energy, it refers to the movement of particles.

Front

What effect does increasing temperature have on particle movement?

Back

Increasing temperature causes particles to move faster.

Front

What is the relationship between temperature and thermal energy?

Back

Higher temperature indicates higher thermal energy due to increased particle movement.

Front

What happens to the temperature of a solid when it is placed in a cooler liquid?

Back

The temperature of the solid decreases as it transfers thermal energy to the cooler liquid.