Chapter 2 Review Game

Besides a strength, or magnitude, what does every force have?

• A.gravity

• B.direction

• C.friction

• D.magnetism

A ball is rolled across four different surfaces with the same force. Which surface will slow the movement of the ball the most?

• A.tile floor

• B.paved road

• C.grassy field

• D.cement sidewalk

How do electric and magnetic forces act on different objects?

• A.They only pull objects.

• B.They only push objects.

• C.They either push or pull objects.

• D.They only push or pull objects when they touch each other.

What happens when an object accelerates?

• A.Its speed or direction changes.

• B.Only its speed changes.

• C.Only its direction changes.

• D.Its speed and direction do not change.

When you ride a roller coaster, what makes your body rise out of its seat at the top of a hill?

• A.inertia

• B.gravity

• C.friction

• D.electricity

How can you complete this sentence so it is always true?

The greater the net force acting on an object,

• A.the lesser the mass of the object.

• B.the greater the mass of the object.

• C.the lesser the acceleration of the object.

• D.the greater the acceleration of the object.

What always happens when the forces acting on an object are equal in strength and opposite in direction?

• A.The object moves.

• B.The motion of the object does not change.

• C.The object does not move.

• D.The object becomes heavier.

You are building a wooden car to enter in a downhill race. What can you do to make the car go as fast as possible?

• Make the car heavier

• Make the car lighter

When the sun is low in the sky early in the morning, trees form

• A. no shadows

• B. short shadows

• C. long shadows

• D. all sizes of shadows