Question

match the descriptions with the simple machines.
6.7) ____ an inclined plane wrapped around a cylinder
6.8) ____ two inclined planes that meet at a sharp angle
6.9) ____ a bar that pivots at a fixed point
6.10) ____ also known as a ramp
6.11) ____ a rope that wraps around a wheel and axle
6.12) ____ a round shape that rolls and turns around a rod
a. inclined plane
b. wedge
c. screw
d. lever
e. wheel and axle
f. pulley
choose the best answers.
6.13) ____ identify the simple machine in the picture.
a. lever
b. wheel and axle
c. pulley
6.14) ____ identify the simple machine in the picture.
a. lever
b. wheel and axle
c. pulley

Explanation:

Match each description to the correct simple machine based on standard definitions, then identify the machines in the images using their core features.

1. A screw is an inclined plane wrapped around a cylinder.
2. A wedge is two inclined planes meeting at a sharp angle.
3. A lever is a bar pivoting at a fixed point.
4. An inclined plane is also called a ramp.
5. A pulley uses a rope around a wheel and axle.
6. A wheel and axle is a round shape turning around a rod.
7. Roller skate wheels turn around an axle, so it is a wheel and axle.
8. The flagpole uses a rope around a wheel, so it is a pulley.

Answer:

6.7) C. screw
6.8) B. wedge
6.9) D. lever
6.10) A. inclined plane
6.11) F. pulley
6.12) E. wheel and axle
6.13) B. wheel and axle
6.14) C. pulley