Science Revision - Forces

A force is a ............ or a pull on an object.

Write in the missing word.

Tags

NGSS.3-PS2-1

During the spy rocket experiment with the straw, we blew into the straw to make the rocket fly.

What was the upward force called?

• gravity

• thrust

• air resistance

• pull

In our second lesson, we made secret mission jets. 

We made them fly with PVC pipes and a 1.5 litre bottle.

You needed a large ............. to overcome the effect of ............. which was pushing down on the jet in the .............. direction.

Which order do the missing words go in?

• gravity

  opposite

  force

• force

  gravity

  opposite

• opposite

  force

  gravity

Tags

NGSS.MS-PS2-4

During the jet experiment, squeezing your bottle created which force?

• thrust

• gravity

• air resistance

• water resistance

During the balloon experiment, what moved the balloon?

• paperclip

• string

• force

Tags

NGSS.MS-PS2-2

What happened to the size of the balloon as it reached the end of the string?

• Got smaller

• Stayed the same

• Got larger

Why did the balloon get smaller?

• The force made it smaller.

• The air was released.

• The friction from the string made it smaller.

Which of the following shows it is NOT a fair test?

• All rockets launched from the same starting point.

• Same size bottles used.

• Some were made from card, some were made from paper.

• Same type of balloons used.

A force is a push or pull on an object.

• True

• False

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When we blew our rockets through straws, is this an example of a push or pull force?

• Push

• Pull