Unit 1 and 2 matter force and motion 3rd grade Review

Two students were pulling on a rope with the same amount of force. Person A increased the force they were using by 2 N, and Person B increased the force they were using by 4 N. Which BEST describes the motion that resulted after they increased the force?

• They stayed in the same place.

• Person A moved towards person B.

• Person B moved towards person A.

• They both moved farther from one another.

Students want to model the path a grasshopper follows when it jumps and returns to the ground. Which of the following is the BEST way to show this shape?

• pushing a shopping cart across a parking lot

• throwing a baseball into the air

• pushing a book off a table

• attracting metal filings with a magnet

Bobby and Amy are pulling on a box of cookies with equal force. What will happen to the box?

• It will stay in the same place.

• It will move more toward Bobby.

• It will move toward Amy.

• It will fly in the air.

Bobby and Amy are pulling on a box of cookies with equal force. What will happen to the box?

• It will stay in the same place.

• It will move more toward Bobby.

• It will move toward Amy.

• It will fly in the air.

The drawing shows a yo-yo that is rolling toward the end of a string. When the person in the picture pulls his or her hand up, which of the following will MOST LIKELY happen?

• The string will stop the hand from moving.

• The yo-yo will shorten the length of the string.

• The string will stop the yo-yo from spinning.

• The yo-yo will move back up the string.

This question has two parts. First, answer Part A. Then answer Part B.

Part A

A student observes that a ball will bounce higher if it is dropped from a greater height. What force is acting on the ball as it is being dropped?

• Heat

• Magnetism

• Gravity

• Sound

This question has two parts. Part B.

What is the variable, or changing factor, in this experiment?

• gravity

• height

• ball

• bounce

Type questiComplete the following statement using the keywords below.

Move the answers to the correct boxes.

Dominick is playing basketball with his friends. He ​ ​ (a)   uses a motion to throw the ball toward the basket. Gravity will​ (b)   the ball down.

• push
• pull
• swing
• weigh

This question has two parts. First, answer Part A. Then answer Part B.

Part A

James put two magnets close together. He placed the south pole of one magnet to the north pole of the other. Which of the statements below MOST LIKELY happened?

• The magnets pushed away from each other.

• The magnets pulled toward each other.

• The magnets did not move at all.

• The magnets moved around in circles.

Part B

Which statement best supports Part A?

• Different poles on a magnet repel each other.

• Different poles on a magnet attract each other.

• Opposite poles on a magnet repel each other.

• Opposite poles on a magnet attract each other.