Making Waves - Marshmallow Catapults

Definitions of scientific methods.

A.I.M - What you want to find out.

Hypothesis: An educated method guess.

Equipment/method: Material used for the experiment.

Conclusion: What you research and what you find out.

Steps: The order in which you carry out the experiment.

Findings: What you found out. ( not your friend )

EXPERIMENT

Hypothesis:

I don't think that it will shoot far at all.

Equipment:

1. 1 clean cup
2. 1 balloon
3. 1 pair of scissors
4. 1 marshmallow

Method:

1. Cut the bottom off the cup with the scissors.
2. Tie a knot at the neck of the balloon and snip off the tip.
3. Stretch the balloon over the top of the cup. You may find this a bit tricky to start with, but after making a few it becomes easy.
4. Pop your marshmallow into the cup.
5. Fire the missile by pulling the knotted neck of the balloon and letting go. You will be surprised at how far it can travel2
6. The open end will fold together when you stretch the balloon, but this will not stop the missile from firing.

Findings:

Our marshmallow catapult was able to shoot up to 11 of my feet when Tennessee shot it over the desk. When the elastic balloon was pulled back it stretched very far and the further the balloon went the more likely the marshmallow would go further.