Is it conductive?
What is a Hypothesis?
An explanation at the beginning of an experiment to a question.
What part of the battery is a negative charge?
Bottom
What did we add to the water to make it work?
Salt
In real life what was usually launched in a catapult?
Rocks.
What is a air molecule?
They make up air.
If you put the two clips together what happens?
The LED would light up.
What part of the battery is a positive charge?
Top
What other fruit or vegetables worked?
Cucumber and lemon
What did we use as something to hold the item we threw?
Cap
Why did the bags get damp?
Condensation.
What is conductivity?
A substance that allows electricity to pass through it.
What is a closed circuit?
A circuit that successfully moves electricity.
What is a electrochemical battery?
A battery that makes energy from chemical reactions.
What did we use to tie the catapults
Rubber bands or pipe cleaners.
What happens to the air pressure when you go to Mount Everest?
Low air pressure, and trouble breathing.
What color cable is positive?
Red
What is a open circuit?
A circuit that is interrupted and doesn't pass the electricity.
What pieces of metal did you have to stick into the potato to work?
Copper and zinc.
What is tension?
Force that is caused by pulling in opposite ways.
What kind of pressure is on the seafloor?
High pressure.
What color cable is negative?
Black
What is electrical engineering?
Engineers that deal with technology and electricity.
Why did the potato clock work?
Uses the acids of the potato to start a reaction, and makes it flow from each potato to cause the power.
How old are catapults?
Medieval ages or 1066-1485
What is air pressure?
The weight of the air molecules pushing down.