WorksheetsWork, Power, and Simple Machines
Total questions: 30
Worksheet time: 22mins
Name
Class
Date
1.
The unit used to measure work is the
a)
Watt
b)
Newton
c)
Joule
d)
Meter
2.
A ______________ is a rope or chain wrapped around a wheel.
a)
wedge
b)
lever
c)
pulley
d)
screw
3.
Any device that makes work easier is called a ______________________.
a)
Joule
b)
prop
c)
lever
d)
machine
4.
The efficiency of a machine can be increased by reducing __________________________.
a)
effort
b)
force
c)
fulcrum
d)
friction
5.
The unit used to measure power is the
a)
Watt
b)
Newton
c)
Joule
d)
Newton*meter
6.
A simple machine with a flat, sloped surface is a(n) __________________.
a)
lever
b)
wheel and axle
c)
inclined plane
d)
pulley
7.
Which of the following is the best example of work being done.
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
8.
No machine in existence has 100% efficiency due to ____________________.
a)
magic
b)
friction
c)
smoke
d)
input
9.
Which simple machines are found on a hammer?
a)
lever only
b)
wedge and plane
c)
axle and lever
d)
screw and pulley
10.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
11.
Force is a _____ or _______
a)
simple complex
b)
push pull
c)
up down
d)
in out
12.
In which of these cases is work being done?
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student picks up and carries his chair into another room
d)
A student sits on the carpet
13.
If you use a crowbar to get the lid off of a bucket, what simple machine are you using?
a)
Inclined Plane
b)
Pulley
c)
Wheel and Axle
d)
Lever
14.
Flagpole
a)
wedge
b)
pulley
c)
incline plane
d)
wheel and axle
15.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
16.
What is the unit for mass?
a)
Kilogram (Kg)
b)
Newton (N)
c)
Joule (J)
d)
Watt (W)
17.
The fixed point on the lever is called
a)
load
b)
resistance
c)
bar
d)
fulcrum
18.
Two or more simple machines used together is a
a)
compound machine
b)
wheel and axle
c)
block and tackle
d)
mechanical advantage
19.
The amount of work done in a certain amount of time is known as
a)
work
b)
effort force
c)
resistance force
d)
power
20.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
21.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
22.
An inclined plane wrapped around a rod forms this simple machine
a)
lever
b)
pulley
c)
screw
d)
wedge
23.
An ax is an example of a
a)
pulley
b)
inclined plane
c)
screw
d)
wedge
24.
A door knob is an example of a ____________
a)
Pulley
b)
Lever
c)
Wheel and axle
d)
Inclined Plane
25.
A ramp is an example of a(n) ____________________.
a)
wheel and axle
b)
inclined plane
c)
lever
d)
pulley
26.
A _____________________ is an inclined plane that moves.
a)
screw
b)
pulley
c)
wedge
d)
wheel
27.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
28.
This device
a)
wedge
b)
lever
c)
incline plane
d)
wheel and axle
29.
How much work is done if I use 10 Newtons to move an object 3 meters?
a)
30 Newtons
b)
13 meters
c)
30 Joules
d)
30 meters
30.
Which simple machine is shown in the picture?
a)
wheel and axle
b)
lever
c)
wedge
d)
pulley
100 %
