Physical Science Grade 3 Unit 1 Review

What is the definition of a force?

• an object in motion

• energy you use

• a stopped object

• a push or pull

Tags

NGSS.MS-PS2-1

Which of the following does every force have?

• direction and speed

• strength and direction

• a pull

• a push

What force is Andy using to change the direction of motion of the ball?

• gravity

• friction

• push

• pull

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Mary pulls John in a wagon while Michael pushes. Steven walks beside them. Which of them is not placing a force on the wagon?

• Mary

• John

• Michael

• Steven

Morgan and Riley are playing tug-of-war, but neither is moving. What are they demonstrating?

• gravity and friction

• balanced forces

• unbalanced pulls

• push and pull

When Billy, Amy, and Lisa pull Sam, Jim, and Lauren over in a game of tug-of-war, what are they demonstrating?

• balanced forces

• pushes and friction

• unbalanced forces

• gravity and friction

When a batter swings and hits a pitched ball, how is he or she using a force on the ball?

• to increase the pull of gravity on the ball

• to change the direction of the ball

• to pull the bat to the ball

• to maintain the speed of the ball

Which force can you observe if you ride in a horse-drawn carriage?

• Balanced forces move the horse .

• Gravity keeps the carriage rolling.

• The horse uses a pull.

• The horse pushes the carriage from behind.

How does a girl on a playground swing demonstrate regular motion?

• The girl is using a force to move the swing.

• Balanced and unbalanced forces cause her movement.

• The girl swings higher when she is pushed

• The swing moves back and forth in a predictable pattern.

Tags

NGSS.MS-PS2-4

What can you tell by watching a merry-go-round in motion?

• Its next spin will be in the same direction as its last several spins

• Gravity will make it stop unexpectedly.

• The direction it is spinning will suddenly change.

• Unbalanced forces will cause the ride to instantly stop spinning.