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Force
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100

What is invisible the force that slows things down.

friction

100

What material do magnets attract?  (2 answers)

Iron and steel

100

What are three types of bridges?

Pillar, Suspension, and Arch 

100

What invisible force pulls you down towards the earth?

Gravity

200
Does adding another trapeze artist to the rope make it slow down? (Think about what happened when you added more pennies to your model) 

No! Adding another person does not speed up or slow down the trapeze. 

200

Name 3 items a magnet would attract

Answers may vary (needs to be metal or iron) 


(spoon, paper clip, chair, scissors, keys, other magnets)

200

Which type of bridge is NOT meant to support long distances?

Arch Bridge

200

What direction is a compass always pulled towards?

North

300

Why did the final rubber band cause the watermelon to burst? 

It created a force that was stronger than the force of the watermelon rind

300
Magnets are too weak to be the force that moves a train (True or false)

False! (In fact, we saw an example of magnets doing this)

300

Which type of bridge works best for a very long, very low bridge (Miss Baxter has been on this kind in the Pontchartrain in Louisiana)  

Pillar Bridge

300

Why can't you use a magnet to pick up a soda can?

The soda can is made out of aluminum not steel or iron

400

What forces caused your hopper poppers to hop off of the table? 

Your fingers PULL the sides out and when you let go the rubber band PUSHED the sides in and up off the table


400

Are paperclips magnets? 

No... they are attracted to magnets 

(Yes only when they are MAGNETIZED or touching a magnet) 

400

What type of bridge is the Golden Gate Bridge?

Suspension Bridge

400

What can cause a trapeze to slow down and eventually stop?

Friction and/or air resistance (the wind) pushing against it 

500

Why is it hard for students to win tug-of-war with students? (Use the word friction in your answer)

Teachers can push with their feet more which means they have more friction to keep them from falling

500

How can you make a magnet look like it is floating?

Put the opposite ends against each other and they will repel each other (which will make it look like it is floating)

500

Why are bridges built with arches, or ropes pulling up, or pillars underneath instead of just putting a board from one side to the other?

A plain board has no support, so it will probably snap or break. 

500

Would you make the rope shorter or longer to make the speed of a trapeze slower?

Longer (We tested this in class)