Balancing Forces Review

Balancing Forces Review

unit 1

The box is still on this table and the force is balanced.

how can we make this box unbalance?

Multiple Choice

What could we do to make box unbalanced?

• We could push the box from every side. The box wouldn't move, but pushes always

  demonstrate unbalanced forces.

• We could observe and describe the box sitting still. This would demonstrate

  unbalanced forces.

• We could hang weights from the hook. The weights would pull on the box. When

  the box slides on the table, the motion would demonstrate unbalanced forces.

• We could hang weights from all sides of the box evenly. The box would stay still but

  because it is being pulled in several directions, this would demonstrate unbalanced forces.

Play with my little brother

My brother and I playing with wooden blocks. I lined up all the blocks up nice and neat. They were all balanced.

Multiple Choice

But then he pulled his toy car into the blocks. What kind of force is happening here now

• magnetic

• balanced

• unbalanced

• gravity

Predict Pattern

All kinds of scientists notice patterns. Patterns can help scientists to:

• figure out causes and effects

• make predictions that they can test

Multiple Choice

This girl is about to hit this volleyball. Predict the path of the volleyball after the girl hits it.

• It will go up.

• It will go backwards.

• It will stay in the air.

• It will go down.

Multiple Select

These magnets are

• Attracting

• Repelling

Multiple Choice

There are 6 people on both sides pulling at the equal strength. What would happen to the rope?

• The rope would move to one side because the forces are balanced.

• The rope would not move because the forces are balanced.

OH NO!

After a earthquake a bunch of rocks fell, and now are blocking the road. No one can get to work.

Fill in the Blank

The rocks that are blocking the road are kept in place by