Unit 4 Review

Unit 4 Force & Motion Review

Open Ended

What can make an object stop, speed up, slow down or change direction? (Class Discussion)

The " Ok Go" Video that you just watched had multiple forces in motion. What force was used to start the video?

Name an object from the video that used gravity to push an object into the air?

Multiple Choice

Two horses are pulling a cart in

opposite directions. The cart begins

to move in the direction shown.

The movement of the cart provides

evidence for which of the following?

• All horses pull with the same

  amount of force.

• The cart is heavier for

  Horse 2 than Horse 1.

• Horse 2 is pulling with more force than Horse 1.

• The wheels on the cart only turn one direction.

Multiple Choice

Students wanted to investigate if water balloons dropped from greater heights

made larger splatters. This experiment is an investigation of the effect of which of

the following?

• Temperature

• Sound

• Gravity

• Magnetism

Multiple Choice

Students are investigating the effect of different surfaces (tile, wood, and

carpet) on the time it takes a toy car to roll two meters. The students are measuring

the effect of which of the following forces?

• Magnetism

• Friction

• Gravity

• Nuclear

Multiple Choice

Students conducted an

investigation in which they rolled

marbles across different surfaces to

measure the effect of the force of

friction on each surface.

Friction slows down and stops

objects. Which of the surfaces

investigated showed the greatest

amount of friction?

• Surface A

• Surface B

• Surface C

• Surface D

Multiple Choice

Toy cars have magnets attached, as shown. One car is placed behind another. In which arrangement would the front car be pushed forward by magnetic force?

Multiple Choice

Which of the following describes the best way to investigate the strength of several different magnets?

• Place each magnet in water to see if it sinks.

• Count how many paper clips each magnet can pick up.

• Use tools to measure the mass and length of each magnet.

• Place the magnets near each other to see how they move.

Zero Gravity

What forces were used on the computers?

Can you imagine a World with Zero Gravity?