1. Describe the operation of a lever-
The purpose of a lever is to raise and to fall depending on the pressure you put on either side of it. A lever can stop a car or even pick something up (your arm), but nomatter what it is, a lever is used to pick something up or move it.
2. What do you need to build a lever-
In order to build a lever you will need an object and a fulcrum, or an object that will be able to hit the ground or table. The fulcrum will pivot, causing one of the two ends to go up, and the other end to go down, and launch or pull whatever was on it.
3. Give 5 examples of everyday machines-
car
lawnmower
airplane
dishwasher
oven
Levers-
Pulling a nail out of wood with a hammer
Break pedal
Shoveling
Crowbar
Your forearm
4. How are cable cars powered in San Francisco-
Cable cars are powered by a system of pullies that are signaled electronically.
5. Who won the Tour De Science? How and Why?-
Bill Nye won the Tour De Science because it was his show, and because the bike he was on (or machine) kept pedaling at the same momentum he was going. Then when it came close to the finish line, he got a boost of power with allowed him to peddle, causing the wheels to rotate faster, which allowed him to win.
