WorksheetsEnergy and Work
Total questions: 24
Worksheet time: 11mins
Name
Class
Date
1.
_______ is force applied through a distance.
a)
Effort
b)
Resistance
c)
Power
d)
Work
2.
In which of the following situations do your arms do work on books?
a)
holding a heavy stack of books while standing
b)
carrying a heavy stack of books
c)
dropping a stack of books onto a table
d)
picking up a pile of books from the floor
3.
Which of the following equations should be used to calculate work done?
a)
W = F × d
b)
W = F/d
c)
W = F × a
d)
W = m × d
4.
You apply a force of 18 N to a dresser and move it 3.0 m. How much work did you do on the dresser?
a)
54 J
b)
6.0 J
c)
21 J
d)
27 J
5.
A watt is equal to _______.
a)
one newton-meter
b)
one meter per second
c)
one newton per second
d)
one joule per second
6.
If you apply a force of 10 N to a box and push it 10 m in 10 s, how much power did you deliver?
a)
30 W
b)
1,000 W
c)
10 W
d)
100 W
7.
How does a ramp make it easier to move a heavy object a certain distance?
a)
by decreasing the amount of force required to move the object
b)
by decreasing the amount of work required to move the object
c)
by decreasing the distance the object moves
d)
by increasing the amount of force required to move the object
8.
A _______ is a device that does work with only one movement
a)
compound machine
b)
hand-operated machine
c)
force multiplier
d)
simple machine
9.
_______ is the ability to cause change.
a)
Momentum
b)
Work
c)
Power
d)
Energy
10.
What two factors determine how much kinetic energy an object has from its motion?
a)
the object’s position and mass
b)
the object’s speed and surface area
c)
the object’s speed and mass
d)
the object’s speed and position
11.
_______ is stored energy due to the interactions between objects.
a)
Potential energy
b)
Entropy
c)
Thermal energy
d)
Kinetic energy
12.
What two factors affect how much gravitational potential energy an object-Earth system has?
a)
the object’s mass and height above the reference point
b)
the object’s speed and mass
c)
the object’s speed and surface area
d)
Earth's size and the object's mass
13.
The _______ is the SI unit of energy.
a)
watt
b)
joule
c)
ampere
d)
volt
14.
______ is energy stored by things that stretch or compress.
a)
Elastic kinetic energy
b)
Gravitational potential energy
c)
Elastic potential energy
d)
Chemical kinetic energy
15.
Stored energy due to chemical bonds is _______.
a)
chemical potential energy
b)
chemical kinetic energy
c)
energy of activation
d)
thermal potential energy
16.
What is the approximate gravitational potential energy of a diver-Earth system, if the diver has a mass of 75-kg and is 5.0 m above the reference level?
a)
150 J
b)
15 J
c)
3,700 J
d)
370 J
17.
Approximately how much kinetic energy does an object have from its motion if its mass is 150-kg and it is moving at a speed of 5.0 meters per second?
a)
400 J
b)
1,900 J
c)
3,800 J
d)
57,000 J
18.
Which has the most kinetic energy from its motion?
a)
a 900-kg car traveling 80 km/h
b)
a 1,100-kg car traveling 60 km/h
c)
a 2,000-kg truck traveling 50 km/h
d)
a 300-kg motorcycle traveling 100 km/h
19.
When work is done, there is always a(n) _______.
a)
constant rate
b)
single movement involved
c)
transfer of energy
d)
increase in the mechanical advantage
20.
As energy transformations occur within a system, the total energy of the system _______.
a)
increases
b)
decreases
c)
is transferred out of the system
d)
remains constant
21.
During energy transformations, energy is never _______.
a)
released as heat
b)
used to increase an object’s potential energy
c)
completely transformed
d)
created or destroyed
22.
The sum of the kinetic energy and the potential energy of the objects in a system is called _______.
a)
thermal energy
b)
complete energy
c)
energy maximum
d)
mechanical energy
23.
One food calorie is equivalent to approximately _______.
a)
4 J
b)
40 J
c)
400 J
d)
4,000 J
24.
Which is NOT a form of energy?
a)
friction
b)
thermal
c)
electrical
d)
chemical
100 %
