Forces and Motion Quiz

What is the force called that pulls objects toward the center of the Earth?

• Electricity

• Friction

• Gravity

• Magnetism

When forces are equal in size and opposite in direction, what are they considered?

• Dynamic

• Neutral

• Unbalanced

• Balanced

What happens to an object when the forces acting on it are balanced?

• It changes direction

• It slows down

• It speeds up

• It does not move

Which force is responsible for a parachute slowing down a falling object?

• Air resistance

• Magnetic force

• Gravity

• Friction

What is the term for forces that are not equal in size and/or not opposite in direction?

• Neutral

• Static

• Unbalanced

• Balanced

What is the effect of unbalanced forces on an object?

• Decrease in mass

• No change in movement

• Change in movement

• Increase in mass

What force keeps a planet in orbit around the sun?

• Friction

• Magnetic force

• Electric force

• Gravity

What happens to the forces when a parachute first opens?

• They become balanced

• They disappear

• They increase in size

• They become unbalanced

What is the result of unbalanced forces acting on a moving object?

• The object stops

• The object changes speed or direction

• The object remains at constant speed

• The object increases in size

What is the term for the force that opposes motion between two surfaces in contact?

• Gravity

• Magnetism

• Friction

• Air resistance