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Lesson Worksheet: Contact Forces Science

In this worksheet, we will practice investigating, drawing conclusions and predicting how forces can change the motion of an object.

Q1:

Fill in the blank: A contact force acts between two objects that are .

  • Aphysically touching
  • Bnot physically touching

Q2:

Chloe blows hard on the Ping-Pong ball.

Little girl enjoying game playdough straw maze

What happens to the Ping-Pong ball?

  • AIt moves fast.
  • BIt moves slowly.
  • CIt does not move.

Q3:

Which picture shows a contact force?

  • A
  • B
  • C
  • DAll of the answers are correct.

Q4:

A Ping-Pong ball is blown on with a straw.

What position will need the biggest blowing force for the ball to reach it?

Q5:

Daniel rolls a marble three times.

Roll 1 2 3
Force Used Gentle Medium Hard

On which roll will it move the fastest?

  • ARoll 1
  • BRoll 2
  • CRoll 3
  • DThe marble always rolls at the same speed.

Q6:

Hannah first blows hard on the Ping-Pong ball and then softly.

Little girl enjoying game straw maze

Fill in the blank: The ball will move when she blows harder.

  • Aslower
  • Bless far
  • Cfarther

Q7:

Jacob wants to investigate the effect of contact forces on motion using some marbles.

Which method should he use?

  • A
  • B
  • C
  • DAll of the answers are correct.

Q8:

Scarlett blows softly on a Ping-Pong ball using a straw. It stops at position 2.

Next, Scarlett blows harder.

What will the new position of the Ping-Pong ball be?

Q9:

A moving marble is hit with another marble.

A moving marble is hit with another marble

What might change due to this motion?

  • ASpeed only
  • BMass only
  • CMass and direction
  • DSpeed and direction

Q10:

Samar blows on a Ping-Pong ball with a straw to investigate the effect of contact force.

What could she change about the way she blows?

  • A
  • B
  • C
  • DAll of the answers are correct.

This lesson includes 1 additional question variation for subscribers.

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