Match the word with the correct definition.

• A force that resists (slows down or stops) the motion of two surfaces sliding across one another

• Motion

• A change in position of an object

• Gravity

• The force that causes objects with mass to attract to one another

• Push

• A force that when applied, moves an object towards you

• Pull

• A force that, when applied, moves an object away from you

• Friction

Tags

NGSS.5-PS2-1

Which of the following is an example of friction?

• An apple falling from the tree.

   

• A ball slowing down on carpet.

• A person seeing themselves in the mirror.

• person pushing a door.

Tags

NGSS.MS-PS3-5

Students are conducting an investigation where they test how the force of magnetism can cause objects to move.

Select all of the objects below that the students would be able to move using the force of magnetism.

• 
• 
• 
• 
• 

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Look at the picture of the child on a swing.

When a student stands behind and pushes the child, the swing will —

• move downward

• not move

• move in circles

• move foward.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

​Forces are pushes or pull, which may cause a change in an object’s motion. ​ (a)   is a force that moves objects away from you and ​ (b)   are forces that moves object towards you Another example of force is ​ (c)   which is caused by magnets when they attract or repel each other. When a magnet ​ (d)   this is an example of a push, and when a magnet ​ (e)   this is an example of a pull.

• A push
• pulls
• magnetism
• repels
• attracts

Tags

NGSS.3-PS2-1

NGSS.3-PS2-3

Pierce and Levi tested different surfaces and made predictions about what will happen when objects collide. 

They tested the objects on a track like the one seen below.

Which prediction would be most likely for the collision of the small foam ball and small steel ball?

• The small foam ball and the small steel ball will collide and stop. 

• The small foam ball will roll back in the opposite direction while the steel ball keeps rolling in the same direction. 

• Both will bounce back in the opposite direction. 

• They will knock each other off the track.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Pierce and Levi tested different surfaces and made predictions about what will happen when objects collide. 

They tested the objects on a track like the one seen below.

Which factors will affect the outcomes of the collision? (Select all that apply) 

• color of the ballC

• size of the ball 

• mass of the ball

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Kennedy and Mackenzie investigated friction. They released a toy car down three ramps set at the same incline. Each ramp was covered with a different surface.

The results are below.

Which claim would best support the data?

• The ramp surface does not affect friction. 

• The least amount of friction was between the rough carpet and the car. 

• The sandpaper ramp created the most friction between the car and the ramp.

• The floor tile ramp created the least amount of friction for the car.

Tags

NGSS.MS-PS2-2

Kennedy and Mackenzie investigated friction. They released a toy car down three ramps set at the same incline. Each ramp was covered with a different surface. 

The results are below. 

If Kennedy and Mackenzie wanted to reduce the amount of friction created on the floor tile, what could they do to the ramp? (Select all that apply)

• add oil to it

• pour water down it

• rub sand on it

• nothing

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two friends, Sara and Ben, want to play on the seasaw. Each friend weighs the same amount. What will most likely happen when they get on the seasaw?

• Sara and Ben won't move because the forces are balanced.

• Sara and Ben won't move because the forces are unbalanced.

• Sara will go up and Ben will go down.

• Ben will go up and Sara will go down.

Tags

NGSS.3-PS2-1