WorksheetsWhat is Energy?
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
Applying a force to an object ALWAYS causes the object to move.
a)
True; Of course!
b)
False; only if it unbalances the forces acting on the object. Example: Pushing on a wall does not unbalance the forces on the wall and so the wall does not move.
2.
Which term describes a force exerted on an object causing it to move in the same direction as the applied force (like lifting a weight)?
a)
Acceleration
b)
Force
c)
Work
d)
Power
3.
If a force does in fact move an object (like your hand pulling a wagon), then we say that _______ is done on the object.
a)
power
b)
mass
c)
work
d)
fission
4.
If a force does NOT move the object (like pressing down on a tabletop) then ____ work is done.
a)
zero
b)
a little
c)
a lot
d)
maximum
5.
Pushing on a stationary wall results in _____ work.
a)
a lot of
b)
a little
c)
zero
d)
unknown
6.
The ability to do "work" on an object is called ______ by physicists.
a)
energy
b)
mass
c)
acceleration
d)
velocity
7.
If two fisherman each reel in a 25lb bass, but fisherman A reels it in 2 minutes while fisherman B reels it in 4 minutes, which one has more power?
a)
A
b)
B
c)
They have the same power
8.
Power is the rate at which energy is transferred. It's equation is
Power = Energy Transferred ÷ Time
Power = Energy Transferred ÷ Time
a)
True
b)
False
9.
A professional weightlifter lifts 200 lbs in 1.7 seconds while a high school football player lifts 200 lbs in 3.2 seconds. Which one transferred energy to the weight more rapidly? This rate of energy transfer is called _______ by physicists.
a)
Pro; mass
b)
Pro; Power
c)
High School; mass
d)
High School; Power
10.
Two basic kinds of energy are _______ and _______ energy.
a)
Static, Friction
b)
Kinetic, Potential
c)
Static, Velocity
11.
The word "kinetic" means ______ in Greek.
a)
being
b)
person
c)
people
d)
moving
12.
The energy an object has due to its motion is
a)
kinetic
b)
potential
c)
elastic
d)
gravitational
13.
An object's kinetic energy depends upon its ______ and its _______.
a)
friction, mass
b)
friction, velocity
c)
mass, velocity
d)
friction, pressure
14.
Kinetic Energy =
a)
2 x mass X velocity2
b)
1/2 x mass x velocity2
c)
mass x height
d)
1/2 x mass x height
15.
Does increasing the mass or the velocity result in a greater increase in Kinetic Energy?
a)
mass
b)
velocity
c)
neither
16.
Potential energy is
a)
Energy from movement
b)
Stored energy from possible movement
c)
An imaginary idea
d)
Energy that has been destroyed
17.
An apple hanging on a tree has ______ energy.
a)
gravitational potential
b)
kinetic
c)
elastic potential
d)
thermal
18.
Gravitational Potential Energy increases as an object's ______ and _______ increases.
a)
acceleration; velocity
b)
weight; height
c)
temperature; velocity
19.
Two skiers at the top of a mountain prepare to go downhill. One weighs 120lb while the other weighs 150lb. Which one has more gravitational potential energy?
a)
120lb
b)
150lb
c)
equal
20.
An apple hanging on a tree 10 ft off the ground has _____ gravitational potential energy than an apple hanging on a tree at 15ft above the ground.
a)
more
b)
less
c)
equal
21.
Gravitational Potential Energy is the only kind of potential energy
a)
True; of course!
b)
False; but don't know the others
c)
False; Elastic potential energy is the other
d)
I have no idea
22.
A hunter sees a buck at 35 yards and draws his bow. The drawn bow has ______ potential energy.
a)
kinetic
b)
elastic
c)
gravitational
23.
When he releases the arrow, the elastic potential energy is transferred to the flying arrow in the form of ______ energy.
a)
Kinetic
b)
Gravitational Potential
c)
Elastic
24.
I have used elastic potential energy before (If you've ever shot a rubber band or ridden in a car then you have!)
a)
True
b)
False
25.
Gravitational potential energy is calculated by this equation:
a)
GPE = weight x height
b)
GPE = weight - height
c)
GPE = height - weight
d)
GPE = mass + weight
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