Intro to Thermal Energy MS-PS1-4

Grade 7 - NGSS - CA

The temperature at which a liquid boils

Boiling point

The temperature at which a liquid boils. Boiling point. The boiling point is the temperature at which a liquid turns into a gas.

The temperature at which a liquid changes to a solid

Freezing point

The temperature at which a liquid changes to a solid. Freezing point. The freezing point is when a liquid becomes a solid, like water turning into ice at 32F 0C.

A state of matter that has no fixed shape or volume

Gas

A state of matter that has no fixed shape or volume. Gas. Gas is matter that fills any space it's in because its particles move freely and spread out.

The energy of a moving object

Kinetic energy

The energy of a moving object. Kinetic energy. Kinetic energy is the energy that an object has because of its motion.

A state of matter that has definite volume but no definite shape

Liquid

A state of matter that has definite volume but no definite shape. Liquid. Liquids flow and take the shape of their container while keeping the same amount of space.

The temperature at which a solid changes into a liquid

Melting point

The temperature at which a solid changes into a liquid is called the melting point. The melting point is when a solid gets warm enough to become a liquid.

How hot or cold something is, it is determined by the kinetic energy of its particles

Temperature

How hot or cold something is, it is determined by the kinetic energy of its particles. Temperature. Temperature is a measure of how fast the particles in an object are moving.

The energy of the moving particles in an object

Thermal energy

The energy of the moving particles in an object. Thermal energy. Thermal energy is the total energy of all the moving particles in an object.