Forces & Motion Quiz

Why is it hard to win a tug-of-war against a group of teachers?

• Teachers try really hard.

• Teachers have more legs than students.

• Teachers have a lot of friction.

• Teachers can push really hard.

The last rubber band caused the watermelon to burst because _________.

• it was stronger than the other rubber bands.

• it was thicker than the other rubber bands.

• it was the last rubber band in the bag.

• it created a force that was greater than the force of the watermelon rind.

Why was a suspension bridge a good design for the Golden Gate Bridge in San Francisco?

• Ships had to pass underneath the bridge.

• It has a lot of pillars underneath to support it.

• The distance the bridge had to cross wasn’t very long.

• The water under the bridge was very shallow.

A trapeze won’t swing forever because ___________.

• a trapeze is too heavy to keep swinging.

• friction and air resistance slow the trapeze down.

• a trapeze isn’t heavy enough to keep swinging.

• the ropes of the trapeze aren’t long enough.

Magnets attract _____________.

• objects that contain iron.

• only other magnets.

• anything made of metal.

• things that are not too heavy.

Why do hoppers hop off the table?

• Because of the rubber band.

• Because of the wind.

• Because of the weight.

• Because of the table.

Why are pillar bridges and arch bridges stronger than board bridges?

• Because they have support from below.

• Because they are made of wood.

• Because they are longer.

• Because they are painted.

How can a trapeze artist make their trapeze swing more slowly?

• Make the ropes longer.

• Make the ropes shorter.

• Add more weight.

• Remove the ropes.

Are paper clips magnets?

• No, but they can become magnetized.

• Yes, they are always magnets.

• No, they cannot be magnetized.

• Yes, but only when they are new.

What is force?

• The ability to do work

• A push or pull on an object

• The speed of an object

• The distance an object travels