WorksheetsTest- chp 4 Work and Energy
Total questions: 39
Worksheet time: 20mins
Name
Class
Date
1.
Which unit is used to measure work?
a)
Watts
b)
Meters
c)
Newtons
d)
Joules
2.
Kilogram is a metric unit used to measure
a)
weight
b)
mass
c)
power
d)
force
3.
Which unit is used to measure power?
a)
Liters
b)
joules
c)
Watts
d)
Pounds
4.
Which unit is used to measure force?
a)
Joules
b)
Pounds
c)
Meters
d)
Newtons
5.
Which unit is used to measure distance?
a)
Kilogram
b)
Meter
c)
Newtons
d)
Watt
6.
What is the unit for measuring how much energy is in foods?
a)
Calories
b)
Kilograms
c)
Newtons
d)
Watts
7.
Why is no work done when you hold a book steady over your head?
a)
The book is not moving
b)
The book is not heavy
c)
No muscles are being used
d)
Trick question; you are doing work.
8.
Work requires both
a)
Distance and speed
b)
Force and distance
c)
Mass and time
d)
Mass and volume
9.
A machine can change
a)
The amount of force needed
b)
The direction of a force
c)
Both the amount of force needed and direction of a force
10.
A machine that does work with no movement or only one movement of the machine is called a
a)
Factory
b)
Compound machine
c)
Simple machine
d)
Combustion engine
11.
Which of the following is a compound machine?
a)
Lever
b)
Bicycle
c)
Pulley
d)
Ramp
12.
Energy stored by something that can stretch or bounce.
a)
Radiant Energy
b)
Kinetic Energy
c)
Elastic Potential Energy
d)
Chemical Potential Energy
13.
A ramp is an example of
a)
A lever
b)
A pulley
c)
A wheel and axle
d)
an inclined plane
14.
Which of the following are modified levers.
a)
Wedge and inclined plane
b)
Screw and wedge
c)
Screw and pulley
d)
Pulley, wheel and axle
15.
Applying a force at which spot on this lever would result in the greatest mechanical advantage?
a)
A
b)
B
c)
C
d)
D
16.
Applying a force at which spot on this lever would make this a first class lever? (multiple correct answers- choose one)
a)
A
b)
B
c)
D
17.
An axe head is an example of a(an)
a)
Pulley
b)
Wedge
c)
Lever
d)
Wheel and axle
18.
Which of the following is an example of a wheel and axle?
a)
Hammer
b)
A crowbar
c)
A steering wheel
d)
A jar lid
19.
What does the blue triangle represent?
a)
Input force
b)
Weight
c)
Output arm
d)
Fulcrum
20.
A(An) _____ can be described as an inclined plane wrapped around a cylinder.
a)
Inclined plane
b)
Screw
c)
Wheel and axle
d)
Pulley
21.
The efficiency of a machine is always less than 100% because
a)
Some work input is lost to friction.
b)
The work output is too great.
c)
All work input is too small.
22.
The rate at which work is done or energy is converted is called
a)
Newtons
b)
Power
c)
Force
23.
The _____ of a machine tells how many times the machine increases or decreases the input force.
a)
Velocity
b)
Mechanical advantage
c)
Work input
d)
Potential energy
24.
Stored energy is also called
a)
kinetic energy
b)
potential energy
c)
sound energy
d)
radiant energy
25.
Energy stored in chemical bonds.
a)
Kinetic Energy
b)
Radiant Energy
c)
Gravitational Energy
d)
Chemical Potential Energy
26.
Which ball has the greatest gravitational potential energy?
a)
Object A
b)
Object B
c)
Object C
27.
As the coaster is rolling along the track, where would kinetic energy be the greatest?
a)
a
b)
b
c)
c
d)
d
28.
Where is gravitational potential energy the greatest?
a)
a
b)
b
c)
c
d)
d
29.
If a ping pong ball and a bowling ball are rolling at the same speed, which would have the greatest kinetic energy?
a)
Bowling ball
b)
They would be the same
c)
Ping pong ball
30.
Describe the energy transformation in the following scenario: The sun heating your skin
a)
chemical energy to kinetic energy
b)
radiant energy to thermal energy
c)
thermal energy to chemical energy
d)
gravitational energy to electrical energy
31.
Describe the energy transformation in the following scenario: A fan is plugged into an outlet and starts spinning.
a)
chemical energy to electrical energy
b)
radiant energy to thermal energy
c)
thermal energy to elastic potential energy
d)
electrical energy to kinetic energy
32.
Describe the energy transformation in the following scenario: A boulder balanced on the edge of a cliff and then falls.
a)
elastic potential energy to gravitational potential energy
b)
radiant energy to thermal energy
c)
gravitational potential energy to kinetic energy
d)
electrical energy to kinetic energy
33.
Describe the energy transformation in the following scenario: The gas in your car moves the pistons.
a)
chemical potential energy to kinetic energy
b)
kinetic energy to electrical energy
c)
gravitational potential energy to thermal energy
d)
electrical energy to radiant energy
34.
Which has more calories?
a)
1g of fat
b)
1g of protein
c)
1g of carbohydrates
35.
Applying a force at which spot on this lever would make this a second class lever?
a)
A
b)
B
c)
C
d)
D
e)
B and C
36.
What type of energy is stored in a battery?
(a)
37.
Energy due to how high an object is above the Earth.
a)
Radiant energy
b)
Kinetic energy
c)
Gravitational Potential Energy
d)
Elastic Energy
38.
Energy a moving object has because of its motion.
a)
Radiant Energy
b)
Kinetic Engery
c)
Gravitational Potential Energy
d)
Chemical Potential Energy
39.
Energy carried by electromagnetic waves (including sunlight and X-rays).
a)
Radiant Energy
b)
Elastic Energy
c)
Kinetic Energy
d)
Gravitational Energy
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