Physical Science BM review

Amber and Rebecca are playing tug-o-war but noone is moving. What are they demonstrating?

• balanced forces

• unbalanced forces

• gravity

• push and pull

Which set of magnetic poles will attract?

• N,N

• S, S

• E,W

• N,S

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

True of False. When balanced forces are acting on an object, there is motion.

• True

• False

Tags

NGSS.HS-PS2-1

What can you conclude about two balloons repelling each other without touching?

• They both have north poles

• They both have the same charge.

• They have different charges.

• One has a south pole and one has a north pole.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following does every force have?

• A push

• A pull

• Strength and direction

• Direction and speed

Joey is leaning against a small apple tree. The tree bends slightly when his back pushes it. What force prevents Isaac from falling over backwards?

• Gravity will prevent him from falling.

• Magnetic force

• The force of Joey pushing the tree is balanced by the tree pushing back on Isaac.

• The tree cannot hold him, and must break soon.

Tags

NGSS.MS-PS2-1

Nigel discovered he could stick a balloon to a wall after rubbing it on a wool sweater. What is the most likely reason this is happening?

• static electricity

• gravity

• magnetic forces

• the balloon is repelled

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What causes roller coaster cars to move up a hill?

• Gravity

• Friction

• Powerful motors

• None of the above

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What does repel mean?

• To pull together

• To push apart

• To move with great force

• To make contact

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

• To maintain the speed of the ball

• To pull the bat to the ball

• To change the direction of the ball

• To increase the pull of gravity on the ball

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2