Energy review

A student pushes ball X down a ramp at different speeds. In which setup will the ball have the most energy?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Joni throws a tennis ball very hard agains a solid wall. What happens after the ball hits the wall?

• The ball loses all of its energy and sticks to the wall.

• The ball loses all its energy and falls straight down to the floor.

• The energy of the moving ball pushes it away from the wall.

• The energy of the moving ball pushes it toward the wall.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-5

A large boat is moving in the water. The boat bumps into a small piece of floating wood. What happens to the motions of the boat and the wood?

• The motions of the boat and wood do not change.

• There is a small change to the motion of the boat and no change to the motion of the wood.

• There is a large change to the motion of the boat and a large change to the motion of the wood.

• There is a small change to the motion of the boat and a large change to the motion of the wood.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When car A hits car B, car A slows down, and car B moves forward. Why do the toy cars react this way after they hit each other?

• The energy in car A moves to car B when they hit each other.

• The energy in car B moves to car A when they hit each other.

• The speed from car A moves to car B when they hit each other.

• The speed from car B moves to car A when they hit each other.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

Katie stretched out her hand and dropped a rubber ball. The ball fell to the floor, and Katie’s hand stayed where it was. What happened next?

• The ball gained energy from the floor and bounced above Katie’s hand.

• The ball bounced back to Katie’s hand because it gained energy from the air.

• The ball bounced back to Katie’s hand because the amount of energy did not change.

• The ball bounced lower than Katie’s hand because some energy transferred to the floor.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

A bowling ball is rolling to the left, and a soccer ball is rolling to the right. Both are moving at the same speed. The mass of the bowling ball is 4 kilograms, and the mass of the soccer ball is 0.51 kilograms. What will happen when the two balls bump together?

• There will be no change to the motion of either of the balls.

• The motion of both balls will change in exactly the same way.

• The motion of the bowling ball will change more than the motion of the soccer ball.

• The motion of the soccer ball will change more than the motion of the bowling ball.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In a game, a striker is pushed so that it hits a coin, as shown.

The coin slides across the board and comes to a stop. What action will make the coin travel farther on the board, and why?

• Push the striker slower to transfer more energy to the coin.

• Push the striker faster to transfer more energy to the coin.

• Push the striker slower to transfer less energy to the coin.

• Push the striker faster to transfer less energy to the coin.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-5

When the wrecking ball hits the building, what happens to the speed and the energy of the wrecking ball?

• The wrecking ball slows down, and all of the wrecking ball’s energy transfers only to the building.

• The wrecking ball slows down, and the wrecking ball’s energy transfers to the building and the air.

• The wrecking ball’s speed stays the same, and all of the wrecking ball’s energy transfers only to the building.

• The wrecking ball’s speed stays the same, and the wrecking ball’s energy transfers to the building and the air.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A student places a toy car on a ramp and marks a point, X, away from the base of the ramp, as shown.

The student places the toy car at different positions on the ramp and records each time taken by the car to cross point X.

Why does the toy car cross point X at different times?

• When the energy of the car is low, it moves at a high speed and covers the distance over a longer period of time.

• When the energy of the car is high, it moves at a high speed and covers the distance in a shorter period of time.

• When the energy of the car is high, it moves at a low speed and covers the distance over a longer period of time.

• When the energy of the car is low, it moves at a low speed and covers the distance in a shorter period of time.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-2

NGSS.MS-PS3-4

Lindsay started running and then jumped onto her skateboard.

What happened after she landed on the board?

• The skateboard stayed in place and Lindsay stopped moving.

• The skateboard stayed in place and Lindsay continued moving.

• Lindsay’s motion made her and the skateboard move forward.

• Lindsay’s motion made her and the skateboard move backward.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5