Ch. 14 Test

Question 1

The ____________ of a machine is the output force divided by the input force.

Answer 1

Mechanical Adv.

Question 2

Incline plane?

Answer 2

Height incline

Question 3

When a force does work it?

Answer 3

Moves an object some distance

Question 4

A______can change the ______ or _______ of a force, but they do not reduce the amount of ______ required.

Answer 4

Machine, size, direction

Question 5

A force does work when it?

Answer 5

Transfers energy

Question 6

Work is measured in

Answer 6

Joules

Question 7

Whats the formula for knowing force?

Answer 7

Force=work
——–
Distance

Question 8

What force opposes the output of a machine?

Answer 8

Friction

Question 9

There r _____ simple machines

Answer 9

6

Question 10

Is a solid bar that rotates, or turns, around and fixed point. The fixed point is called a?

Answer 10

Lever and fulcrum

Question 11

When someone turns a wheel of an axle

Answer 11

Wheel and axle

Question 12

A wheel with a grooved rim and with a rope or cable that rides

Answer 12

Pulley

Question 13

Is a simple machine with a sloping surface

Answer 13

Incline plane

Question 14

A simple machine that has a thick end and a thin end

Answer 14

Wedge

Question 15

Is a inclined plane wrapped around a cylinder

Answer 15

Screw

Question 18

A ______ makes it easier to lift an object because it decreases____force, but lengthens_____distance

Answer 18

Ramp, force, distance