4.2 Strength and Motion

Dan gave his cart a soft push. Mika wants to investigate how a strong push will move the cart.

What might Dan and Mika see in their investigation?

• A stronger push is easier to make.

• A stronger push can make things move farther.

• Different pushes can make things move in different directions.

• Pushes and pulls can make things move in different directions.

Tags

NGSS.K-PS2-1

NGSS.K-PS2-2

Observe the girl and the tree.

What does this show about pushes and pulls?

• Things always move when they are pushed or pulled.

• Things always stay in place when they are pushed or pulled.

• Things never move when they are pushed or pulled.

• Things sometimes stay in place when they are pushed or pulled.

Tags

NGSS.K-PS2-1

NGSS.K-PS2-2

Students are playing tug-of-war at recess.

What does one side need to do to win the game?

• One side needs to pull harder than the other side to win the game.

• One side needs to push harder than the other side to win the game.

Tags

NGSS.K-PS2-1

NGSS.K-PS2-2

How can pushes and pulls be investigated?

• I can test different strengths of pushes and pulls and record how far the marble goes.

• I don't describe how the motion of the marble changes because of the push or pull.

Tags

NGSS.K-PS2-1

NGSS.K-PS2-2

Observe the children and the merry-go-round. 

Are the children using pushes or pulls?

How are they using them?

• The children are pulling the merry-go-round. Their pulling is making the merry-go-round move faster and in its circular path.

• The children are pushing the merry-go-round. Their pushes are making the merry-go-round move faster and in its circular path.

Tags

NGSS.K-PS2-1

What does the word pull mean?

• a movement toward you

• a movement of an object

Tags

NGSS.K-PS2-1

What does the word motion mean?

• a movement toward you

• a movement of an object

Tags

NGSS.K-PS2-1

Match the following

• moves fast with a soft push

• 
• moves slowly with a hard push

• 
• barely moves with hard push

• 

Tags

NGSS.K-PS2-1

NGSS.K-PS2-2