AV 8th Grade Semester Review

Front

What is a conductor?

Back

A material that allows electricity to flow through it easily.

Front

What is an insulator?

Back

A material that does not allow electricity to flow through it easily.

Front

How do you calculate net force?

Back

Net force is the vector sum of all forces acting on an object.

Front

What is the net force if 60N is applied to the right and 0N to the left?

Back

60N, Right.

Front

What happens when forces are equal in magnitude but opposite in direction?

Back

They have no effect on the motion of an object.

Front

What force keeps planets in orbit around the sun?

Back

Gravitational force.

Front

What is gravitational potential energy?

Back

Energy stored in an object due to its height above the ground.

Front

Give an example of gravitational potential energy.

Back

A book on a high shelf.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object; weight is the force of gravity acting on that mass.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.