science grade 4

Cooling causes a liquid to change into a

• solid

• liquid

• gas

• nothing

All matter consists of

• particles

• solid

• gas

• liquid

If the particles are closely packed so that they can only move a little bit, the substance is a .

• solid

• liquid

• gas

• water

If the particles are far apart and move a lot, the substance is a

• solid

• liquid

• gas

• particles

What Forms when a liquid is cooled to freezing point.

• solid

• liquid

• gas

• water

Sounds travel best through

• solid

• liquid

• gas

• nothing

Sounds travel through

• solid

• liquid

• gas

• all of the above

Sounds come from

• sources

• nothing

• outer space

Melting point is the temperature at which change the substances from

• liquid to solid

• solid to liquid

• gas to solid

• solid to gas

boiling point is the temperature at which change the substances from

• liquid to solid

• solid to liquid

• liquid to gas

• solid to gas