EXPLORATORIUM INSTITUTE FOR INQUIRY

Process Circus

 Process Circus Equipment List

1. Candles

• Candle in holder.
• Matches.

2. Dripping Water

• 10 or 25 ml measuring cylinder.
• Watch with second hand.

3. Soils

• none

4. Velcro

• Two matching short pieces of velcro.
• Hand lens.

5. Hinged Mirror

• Two mirrors held vertically with a duct tape hinge.
• Protractor.
• Coin.

6. Cartesian Diver

Plastic drink bottle (clear, 1 litre), 90 percent filled with water and with an eye dropper in it containing enough water so that it just floats, then sinks when the bottle sides are squeezed.

7. Ice in Can

• Clean empty shiny food can without lid.
• Small lumps of ice.
• Container to hold ice.

8. Wet Paper

• Jar of water.
• Several strips of filter paper.

9. Egg in Water

• One egg.
• Jar of tap water.
• Jar of salt water (salty enought to float an egg).
• Spoon.

(containers must be large enough to get egg out)

10. Toy on Different Surfaces

• None but a clockwork toy can be provided (the point is to plan, not to do).

11. Wind-up Toy

• A clockwork toy, preferably slow-moving.

12. Pendulums

A stand with a horizontal arm on which two strings are tied, forming pendulums - one with a large heavy washer and one with a small light one.