Lever
Which of the following is not an example of a simple machine?
A. a screw B. a pulley
C. a washing machine D. a wheel
a washing machine
Gears can be found in the following machine(s):
A. clocks B. bicycles
C. can openers D. all of the above
all of the above
A ____________ is made up of a grooved wheel and rope. It helps rise and lower objects.
A. screw B. wheel and axle
C. inclined plane D. pulley
pulley
A _________ has two slanted sides that come to a point to let you cut through other objects.
A. wheel B. wedge
C. pulley D. lever
wedge
A seesaw is an example of a lever. How can a lever help you get work done?
A. A lever can lift a heavy load.
B. A lever can dig a hole.
C. A lever is used to cut through stone.
D. A lever holds a building together.
A lever can lift a heavy load.
A _____________ is a wheel with teeth.
A. gear B. lever
C. inclined plane D. wedge
gear
An inclined plane _______ the distance you travel which means the work is spread out.
A. decreases B. slows down
C. increases D. speeds up
increases
What is the difference between a nail and a screw?
A. Nails come in all shapes and sizes and screws don't.
B. A screw has ridges called threads to make them really strong.
C. You need a screwdriver or drill to twist a nail into place.
D. A nail has a sharp point and screws don't.
B. A screw had ridges called threads to make them really strong.
How does wheel and axle help us everyday?
A. They work together to change the amount of force needed to move an object.
B. They help spin things.
C They help move things.
D. All of the above.
D. All of the above.
Wheels make work easier by cutting down on ______.
A. magnetism B. sound waves
C. friction D. gravity
friction