Intro to Thermal Energy

Front

What happens to the atoms of a substance when thermal energy is removed?

Back

The atoms vibrate slower.

Front

What type of chemical reaction can be used to heat up other substances?

Back

A chemical reaction that releases energy.

Front

Why do atoms have kinetic energy?

Back

Atoms have kinetic energy because they are always vibrating.

Front

In which direction does thermal energy move?

Back

Thermal energy always moves from a warmer area to a cooler area.

Front

What type of energy does thermal energy come from?

Back

Thermal energy comes from the kinetic energy of the atoms and molecules that make up the matter.

Front

Define thermal energy.

Back

Thermal energy is the energy that comes from the temperature of matter, which is related to the kinetic energy of its atoms and molecules.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion; in the context of thermal energy, it refers to the movement of atoms and molecules.

Front

What is the relationship between temperature and thermal energy?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance; higher temperature means higher thermal energy.

Front

What occurs during a phase change in terms of thermal energy?

Back

During a phase change, thermal energy is either absorbed or released, causing the substance to change from one state to another (e.g., solid to liquid).

Front

What is an example of a substance that absorbs thermal energy?

Back

Water absorbs thermal energy when it heats up, which can lead to evaporation.