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- 1. Multiple Choice
Wheels, levers, pulleys, ramps, screws, and wedges are forms of _______________________.
potential energy
simple machines
chemical changes
dark matter
- 2. Multiple Choice
Simple machines change the size and __________ of forces.
color
direction
work
property
- 3. Multiple Choice
A catapult is an example of a _________ .
lever
wheel and axle
screw
inclined plane
- 4. Multiple Choice
The pivot point of a lever is called the _________.
load
bar
effort
fulcrum
- 5. Multiple Choice
Which of the following is not a lever?
- 6. Multiple Choice
A bunch of levers pivoting around a fulcrum =
wheel
screw
wedge
pulley
- 7. Multiple Choice
Gears are wheels with teeth.
True
False
- 8. Multiple Choice
Stairways are a combination of a ______ and a ladder.
screw
ramp
pulley
wheel
- 9. Multiple Choice
Another name for a ramp =
axle
pulley
lever
inclined plane
- 10. Multiple Choice
Which of the following is not an example of a ramp? (inclined plane)
- 11. Multiple Choice
A spiral staircase is a lot like a ___________.
pulley
screw
wheel and axle
wedge
- 12. Multiple Choice
A screw is like a:
ramp wrapped around a rod.
wedge with a stick
wheel moving up a ramp
pulley lifting a post
- 13. Multiple Choice
The distance between the threads of a screw:
force
leverage
pitch
fulcrum
- 14. Multiple Choice
Which of the following is NOT an example of a screw?
- 15. Multiple Choice
A prosthetic arm is an example of a _________.
ramp
screw
pulley
lever
- 16. Multiple Choice
A crane uses ___________ to lift heavy loads.
ramps
pulleys
axles
wedges
- 17. Multiple Choice
With a pulley system, you use more rope (distance), but need less ________ to lift the load.
work
mass
force
speed
- 18. Multiple Choice
San Francisco cable cars are now operated with a lot of levers and pulleys. What originally pulled the trolleys?
horses
oxen
cars
trains
- 19. Multiple Choice
How many simple machines are there?
4
6
8
12
- 20. Multiple Choice
The video kind of left out WEDGES. Which of the following is an example of a wedge?
THEY ALL ARE WEDGES
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