1. CRCT Prep

2. The picture below shows a light bulb.
The bottom of this light bulb is an example of what type of simple machine?
A. a lever
B. a pulley
C. a screw
D. a wedge

3. A staircase is most like what type of simple machine? A. lever
The picture below shows a staircase.
A staircase is most like what type of simple machine?
A. lever
B. wedge
C. inclined plane
D. wheel and axle

4. Look at the bicycles below.
Why would the smaller bicycle take more work to ride?
A. Smaller pedals are harder to push.
B. Smaller seats have less room to sit on.
C. Smaller handlebars are harder to steer.
D. Smaller wheels have to turn more often.

5. The picture below shows an antique piano stool.
This piano stool uses what type of simple machine to adjust the height?
A. wedge
B. screw
C. pulley
D. lever

6. The picture below shows tongs.
The tongs work as which of the following simple machines?
A. inclined plane
B. lever
C. pulley
D. wedge

7. A. Inclined plane B. Pulley D. Wedge E. lever
When you bend your arm at the elbow, the bones and muscles in your arm are acting like a system. What simple machine does this system represent?
A. Inclined plane
B. Pulley
D. Wedge
E. lever

8. Which of the following shows an inclined plane being used?
A. B.
C. D.