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Work, Power and Energy Unit Study Guide

Total questions: 23

Worksheet time: 12mins

Name
Class
Date
1.

1. What is the definition of work? (What needs to happen for work to be done in physics?)

a)

Force

b)

distance

c)

Force over a distance

d)

Math Homework

2.

1. A road is an example of what type of simple machine?

a)

screw

b)

lever

c)

inclined plane

d)

pulley

3.

What two energies need to be added together to find the total energy? (think of a roller coaster)

a)

radiant and potential

b)

potential and kinetic

c)

potential and nuclear

d)

nuclear and kinetic

4.

Which simple machine has a fulcrum?

a)

lever

b)

inclined plane

c)

pulley

d)

wedge

5.

Work depends on _____ and ___________

a)

force

b)

distance

c)

both force and distance

6.

A slanted surface used to raise an object is a(n)____.

a)

lever

b)

wedge

c)

screw

d)

inclined plane

7.

The unit of measure for power is _____.

a)

joules

b)

seconds

c)

watts

d)

minutes

8.

An inclined plane with one or two sloping sides forms a machine called a ____.

a)

pulley

b)

lever

c)

ramp

d)

wedge

9.

When two or more simple machines work together, they are called a(n) ____.

a)

simpler machine

b)

compound machine

c)

effort machine

d)

super machine

10.

Force is measured in _____.

a)

meters

b)

joules

c)

kilograms

d)

Newtons

11.

If you slide a box across the floor, it will not continue sliding. What force is acting on the box to slow it down?

a)

Potential

b)

Kinetic

c)

Gravity

d)

Friction

12.

Distance is measured in _____.

a)

meters

b)

kilograms

c)

Joules

d)

Newtons

13.

A kite stuck in a tree has ____ energy.

a)

potential

b)

kinetic

c)

potential

d)

thermal

14.

Sunlight is produced through ____ energy.

a)

nuclear

b)

radiant

c)

thermal

d)

electrical

15.

An inclined plane wrapped around a cylinder post is a ____.

a)

lever

b)

screw

c)

ramp

d)

wedge

16.

The rate at which work is done is called ____.

a)

efficiency

b)

effort time

c)

force

d)

power

17.

Power is work divided by _____.

a)

time

b)

force

c)

distance

d)

speed

18.

According to the law of conservation of energy, the total amount of energy in the universe ____.

a)

remains constant

b)

increases

c)

decreases

d)

changes constantly

19.

Whenever two surfaces interact, some energy is lost to thermal energy due to _____.

a)

surrounding heat

b)

water

c)

friction

d)

fusion

20.

When a rubber band is stretched, it has ____ energy.

a)

kinetic

b)

potential

c)

nuclear

d)

chemical

21.

Work is measured in _____.

a)

meters

b)

kilograms

c)

Joules

d)

Newtons

22.

Which of the following is NOT an example of a wheel and axle?

a)

screwdriver

b)

door knob

c)

screw

d)

pencil sharpener

23.

Which one of the following is NOT an example of work being done?

a)

the Moon orbiting

Earth

b)

pushing a box from the

bottom of a hill to the top of the hill

c)

pulling a sled across

a field covered with snow

d)

lifting a bookbag off

the floor