Worksheets8B Conservation of Energy PS3a/b
Total questions: 24
Worksheet time: 30mins
Name
Class
Date
1.
What kind(s) of energy is(are) in a person climbing a ladder?
a)
Potential
b)
Kinetic
c)
Both
2.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
a)
The PE and KE increase and decrease together
b)
The PE decreases while the KE increases
c)
Impossible to know without knowing the mass
3.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
4.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
5.
A change from one form of energy to another is called ___________.
a)
work
b)
power
c)
mechanical
d)
energy transformations
6.
According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?
a)
The total amount of energy is conserved
b)
The total amount of energy is less after a reaction
c)
The total amount of energy is more after a reaction
7.
A 40 kg crate is picked up by a crane to a height of 50m. The crate falls. What is the velocity of the crate just before it hits the ground?
a)
2000 Joules
b)
19,600 Joules
c)
19,600 m/s
d)
31.3 m/s
8.
Power is defined as the
a)
force on an object times the distance the object moves.
b)
force on an object divided by the time the force acts.
c)
work done times the time taken to do that work.
d)
work done on an object divided by the time to do the work
9.
Power is defined as the
a)
force on an object times the distance the object moves.
b)
force on an object divided by the time the force acts.
c)
work done times the time taken to do that work.
d)
work done on an object divided by the time to do the work
10.
When my velocity triples, my kinetic energy increases by ______ times.
a)
9
b)
3
c)
1.5
d)
4.5
11.
The Law of Conservation of Energy states:
a)
Energy can created or destroyed but not transformed
b)
Energy cannot be created or destroyed, it can only transformed
c)
Energy can't be created, destroyed or transformed
12.
Potential or kinetic?
Running?
Running?
a)
potential
b)
kinetic
13.
Potential or kinetic?
Stretched bow and arrow?
Stretched bow and arrow?
a)
kinetic
b)
potential
14.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
15.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
16.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
17.
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
18.
What do you need to add to kinetic energy in order to find an object’s mechanical energy?
a)
Kinetic Energy
b)
Gravitational Energy
c)
Thermal Energy
d)
Potential Energy
19.
What force causes the carts to slow down?
a)
friction
b)
applying force
c)
gravity
d)
gravity and friction
20.
________ is the energy possessed by an object because of its motion.
a)
Power
b)
Force
c)
energy
d)
kinetic energy
21.
Where does the most potential energy exist on a roller coaster?
a)
The top of the coaster
b)
The bottom of the coaster
c)
The middle of the coaster
d)
It is the same anywhere on the coaster
22.
The force that makes a roller coaster roll is...?
a)
Rocket Power
b)
Gravity
c)
Motors
d)
Gears
23.
When the cart started rolling the energy transformation was ______.
a)
Potential to kinetic
b)
Kinetic to potential
c)
No energy was transformed
d)
Totally awesome dude!!!!!!
24.
If a drop is steeper, the roller coaster will go...
a)
Faster
b)
Crash
c)
Slower
d)
Stop
100 %
