WorksheetsWork and Energy
Total questions: 30
Worksheet time: 1hrs 24mins
Name
Class
Date
1.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
2.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
3.
When plants convert the sun's energy into food, which type of energy is it?
a)
kinetic
b)
chemical
c)
thermal
d)
radiant
4.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
5.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
6.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
7.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
8.
On a roller coaster, where is maximum kinetic energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
9.
The formula for work is:
a)
d = r x t
b)
p = m x v
c)
f = m x a
d)
w = d x f
10.
According to which law of energy, energy can't be created or destroyed?
a)
First law of motion
b)
The law of tacos
c)
Laws of Energy
d)
law of conservation of energy
11.
WHICH OF THE FOLLOWING IS NOT AN EXAMPLE OF POTENTIAL ENERGY?
a)
A BALL TRAVELING AT 10 M/S
b)
A COMPRESSED SPRING
c)
WATER BEING STORED AT A WATER DAM
d)
A STRETCHED RUBBER BAND
12.
AS A ROLLER COASTER MOVES DOWN A HILL, POTENTIAL ENERGY IS CONVERTED INTO KINETIC ENERGY, THERMAL ENERGY, AND SOUND ENERGY. WHAT IS TRUE ABOUT THE TOTAL ENERGY OF THIS SYSTEM?
a)
ENERGY IS GAINED (CREATED) AS THE ROLLER COASTER MOVES
b)
ENERGY IS LOST (DESTROYED) AS THE ROLLER COASTER MOVES
c)
THE TOTAL ENERGY REMAINS THE SAME AS THE ROLLER COASTER MOVES
d)
THE TOTAL ENERGY CONSTANTLY CHANGES AS THE ROLLER COASTER MOVES
13.
True or false
You do work only when you exert a force on an object and move it
You do work only when you exert a force on an object and move it
a)
true
b)
false
14.
work is a measurement of how much force is applied over a certain
a)
distance
b)
velocity
c)
shape
d)
size
15.
units of force are
a)
netwons
b)
grams
c)
joules
d)
meters
16.
if you push a cart with a force of 60 N for 2 m... how much work have you done
a)
120 J
b)
30 J
c)
120 N
d)
30 N
17.
both work and energy are measured in
a)
joules
b)
newtons
c)
meters
d)
seconds
18.
true or false
the faster an object moves the more kinetic energy it has
the faster an object moves the more kinetic energy it has
a)
true
b)
false
19.
if you lift a 2 kg box of toys to the top shelf of a closet that is 3 m high... how much PE will the box have
a)
58.8 J
b)
58.8 N
c)
6 J
d)
6 N
20.
In the formula for kinetic energy, what is being squared
a)
mass
b)
velocity
21.
Which type of energy is potential (+) kinetic
a)
mechanical
b)
thermal
c)
chemical
d)
electromagnetic
22.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction
23.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
24.
Why is no machine 100% efficient?
a)
some of the input energy is converted to mechanical energy in the environment
b)
some of the input energy is converted to chemical energy in the environment
c)
some of the input energy is converted to heat energy in the environment
d)
All machines can be 100% efficient
25.
How can an incline plane reduce the amount of force required to lift an object?
a)
increase the length of the ramp
b)
increase the height of the ramp
c)
decrease the length of the ramp
26.
The kinetic energy of a truck would _______ if the truck's mass increased.
a)
decreased
b)
increased
c)
stay the same
27.
If Joe is pushing a large fridge, but it is not moving, is he doing work?
a)
Yes, he is aplying a force on the fridge.
b)
Yes, Joe is exerting energy by trying to move the fridge.
c)
No, the fridge is not moving in the direction of the applied force.
d)
No, the fridge is too big.
28.
The efficiency of a machine can never be 100%.
a)
True
b)
False
29.
An object cannot have both potential and kinetic energy at the same time.
a)
True
b)
False
30.
Energy can change from potential to kinetic, but the mechanical energy will stay the same.
a)
True
b)
False
100 %
