8th Grade Science Semester Exam

Front

A substance that has a definite shape and a definite volume is a

Back

solid

Front

Gravitational potential energy is affected by the object's weight and the object's

Back

height

Front

Air Currents transfer energy by the method of heat transfer called

Back

Convection

Front

Why would two electrons repel each other if they were close together?

Back

They have like charges, so they experience a repulsive force.

Front

A substance made from one type of atom. It cannot be changed into anything simpler is called an

Back

element.

Front

The process by which plants convert sunlight into chemical energy is called

Back

photosynthesis.

Front

The force that attracts objects toward each other is known as

Back

gravity.

Front

The basic unit of matter is called an

Back

atom.

Front

A combination of two or more substances that are not chemically bonded is called a

Back

mixture.

Front

The change of state from a gas to a liquid is called

Back

condensation.