Lesson Check: Forces Can Change Motion

Forces can make an object _____.

• slow down

• speed up

• stop moving

• all of the above

Tags

NGSS.3-PS2-1

Forces that cause an object to move are called (a)   forces.

Tags

NGSS.MS-PS2-2

Team A and team B played tug-of-war. Which most likely happened if team A won?

• Team B used more force.

• Both teams used the same amount of force.

• Team A used more force.

• Team A used less force.

Tags

NGSS.MS-PS2-2

Describe an example in which balanced forces are acting on an object. (On the TEST you NEED TO WRITE THE ENTIRE ANSWER OR DRAW THE PICTURE explaining what is happening)

• A book resting on a table has table forces pushing it down and gravity pushing it up.

• A book resting on a table has table forces pushing it up and gravity pushing it down

• A ball falling freely under gravity and forces acting around it.

• A rocket launching into space and gravity pushing it down.

Which materials could increase the friction between objects? Select all that apply.

• sandpaper

• oil

• rough stones

• water

Which force slowed the golf ball as it rolled?

• gravity

• friction

• force from the golf club

• force from the golfer

Tags

NGSS.MS-PS2-2

Anita makes the claim that an unbalanced force can move a block. She is planning an investigation to test her claim, using the objects shown. What should Anita measure during the investigation? (On the TEST you NEED to WRITE ALL THE STEPS she needs to follow on the experiment and how she is using the ruler, meterstick and marble.)

• The mass of the block

• The distance the block moves with a ruler

• The color of the block with the marble.

• The temperature of the block with the ruler

Tags

NGSS.MS-PS2-2

Anita makes the claim that an unbalanced force can move a block. She is planning an investigation to test her claim, using the objects shown. What is the cause of the unbalanced force on the block in the plan you wrote in part (a)? (On the TEST you NEED to WRITE ALL THE STEPS she needs to follow on the experiment and how she is using the ruler, meterstick and marble.)

• The weight of the block makes it move.

• The friction between the block and the surface makes it stop.

• The push applied to the block by the marble makes it move.

• The gravitational force on the block makes it fall down.

Tags

NGSS.MS-PS2-2

Explain how the plan you wrote in part (a) tests Anita’s claim. (On the TEST you NEED to WRITE ALL THE STEPS she needs to follow on the experiment and how she is using the ruler, meterstick and marble.)

• The distance of the block before and after being hit by the marble will tell Anita whether the force caused by the rolling marble moved the block causing an unbalanced force.

• The gravity of the block before and after being hit by the marble will tell Anita whether the force caused by the rolling marble moved the block causing an unbalanced force.

• The direction of the block before and after being hit by the marble will tell Anita whether the force caused by the rolling marble moved the block causing an unbalanced force.

• The distance of the block before and after being hit by the marble will tell Anita whether the force caused by the rolling marble moved the block causing a balanced force.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Describe one possible plan for Anita's investigation involving a block and a marble. (On the TEST you NEED to WRITE ALL THE STEPS she needs to follow on the experiment and how she is using the ruler, meterstick and marble.)

• Anita can roll/throw the marble to hit the block.

• Anita can place the block on top of the marble.

• Anita can use a magnet to move the marble.

• Anita can freeze the marble and block together.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1