Ch. 9 part b

Question 1

What is the decrease in effort that is needed to move an object called?

a. mechanical advantage
b. resistance force
c. work
d. effort force

Answer 1

a. mechanical advantage

Question 2

Which machine is a bar that turns on a point?

a. pulley
b. lever
c. inclined plane
d. screw

Answer 2

B. lever

Question 3

Which machine is an inclined plane would around a cylinder or cone?

a. pulley
b. wheel and axle
c. screw
d. wedge

Answer 3

c. screw

Question 4

Which machine consists of two inclined planes placed back to back?

a. pulley
b. wheel and axle
c. screw
d. wedge

Answer 4

d. wedge

Question 5

Which simple machine makes work easier by either changing the direction or the force or by reducing the amount of force needed to move an object?
a. pulley
b. wheel and axle
c. screw
d. wedge

Answer 5

a. pulley

Question 6

a. inclined plane
b. lever
c. pulley
d. screw
e. wedge
f. wheel and axle

AXE BLADE?

Answer 6

E. wedge

Question 7

a. inclined plane
b. lever
c. pulley
d. screw
e. wedge
f. wheel and axle

BROOM?

Answer 7

b. LEVER

Question 8

a. inclined plane
b. lever
c. pulley
d. screw
e. wedge
f. wheel and axle

SLIDE?

Answer 8

A. inclined plane

Question 9

a. inclined plane
b. lever
c. pulley
d. screw
e. wedge
f. wheel and axle

DOORKNOB?

Answer 9

F. WHEEL AND AXLE

Question 10

a. inclined plane
b. lever
c. pulley
d. screw
e. wedge
f. wheel and axle

JAR LID?

Answer 10

D. SCREW

Question 11

a. inclined plane
b. lever
c. pulley
d. screw
e. wedge
f. wheel and axle

FLAGPOLE?

Answer 11

C. PULLEY