Forces and Motion Review

Four different students take turn pushing a large, heavy ball on the school parking lot. What is the best way to determine which student used the most force to push the ball?

• compare the sizes of the students

• compare the ages of the students

• compare the distances that the ball rolled

• compare the number of times the ball was rolled

Tags

NGSS.MS-PS2-2

Sarah kicks a ball. The ball moves faster when she kicks it on the concrete sidewalk than when she kicks it on the grass. Why does the ball travel slower on the grass than on the sidewalk?

• the grass has more friction

• the grass attracts more wind

• the grass has a higher temperature

• the grass increases Earth's gravity

Bryan pushes a toy car across three different surfaces. He pushes the car across a wooden tile floor, and a carpeted floor. He notices it is hardest to push the toy car across the carpet floor. Which is most likely the reason it is hardest to push the car across the carpet?

• the car has more mass when it is on the carpeted floor.

• the carpet creates more friction that the other surfaces

• the car is affected most by gravity on the carpet

• the carpet pushes less against the car than the other surfaces.

In a science lab, students measured how long it took for a block to slide down a ramp. What were the students comparing in this experiment?

• the amount of frictional force acting on the block

• the amount of gravitational force acting on the block

• the amount of frictional acting on the ramp

• the amount of gravitational force acting on the ramp

Tags

NGSS.MS-PS2-2

Tom and Bob play catch with a ball. Which term best describes the motion of the ball?

• shape

• size

• speed

• weight

Tags

NGSS.MS-PS3-1

Marni runs 1500 meters around the school track. What does she need to know order to find her speed?

• her time from start to finish

• the number of steps she took

• her heart rate at the finish line

• the direction she began running

If Bianca continues walking at the same pace, what is the total time it will take her to walk 500 meters?

• 5 mins

• 6 mins

• 10 mins

• 15 mins

What can the students do to increase the speed that the marble will roll down the ramp?

• add a layer of carpet to the board

• lower the height of the board

• use a longer board for the ramp

• replace the board with a smoother board

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A rocket is traveling toward space. What force must the rocket act against as it moves away from Earth?

• inertia

• gravity

• magetism

• momentum

Tags

NGSS.MS-PS2-4

Bianca rode her bike for 30 minutes. She noticed that she traveled farther in the first 15 minutes than in the second 15 minutes. Which conclusion can Bianca draw about her bike?

• she rode at a constant speed

• she rode downhill the entire trip

• she rode faster the first fifteen minutes

• she rode slower the first 15 minutes

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5