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WorksheetsUnit 3 Test Review
Total questions: 44
Worksheet time: 51mins
Name
Class
Date
1.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
2.
What kind of energy is in a battery?
a)
Potential
b)
Kinetic
3.
Which is the best example that something has kinetic energy?
a)
a. a car parked on a steep hill
b)
b. a tennis ball rolling across the court
c)
c. a picture hanging on the wall
d)
d. a piece of coal before it's burned
4.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
5.
Which point has the most potential energy?
a)
G
b)
f
c)
b
d)
a
6.
How much potential energy is at the top of a hill on a rollar coaster ride
a)
100%
b)
50%
c)
0%
d)
20%
7.
The faster an object moves, the ________ kinetic energy it has.
a)
more
b)
less
c)
none of the above
d)
all of the above
8.
When you stretch a rubber band, you are storing __________ energy.
a)
kinetic
b)
potential
c)
none of the above
d)
all of the above
9.
Can energy be destroyed
a)
no
b)
yes
10.
What is the best example of a device that converts electrical energy to thermal energy?
a)
a toaster
b)
a clock radio
c)
a flashlight
d)
an electric toothbrush
11.
How do you determine the total energy of an object?
a)
Multiply the KE and PE
b)
Subtract the KE from the PE
c)
Add the KE and PE
12.
How much KE is there in a 5kg ball traveling at 10m/s?
a)
Ten joules (10J)
b)
Fifty Joules (50J)
c)
Twenty five joules (25J)
d)
Two hundred fifty joules (250J)
13.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
14.
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
15.
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
16.
Energy transformations occur when...
a)
energy is created through conduction
b)
energy changes from one form to another
c)
two forces slide together that are touching
d)
a chemical reaction takes place
17.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
18.
What kind of heat transfer happens when the sun is heating your body?
a)
Conduction
b)
Radiation
c)
Convection
d)
Density
19.
In heat transfer, heat always flows from the _______________ substance to the _______________ substance.
a)
Hotter to colder
b)
Colder to hotter
c)
Hotter to hotter
d)
Colder to colder
20.
___________________ is the type of heat transfer that occurs in fluids, such as warm air rising and cold air sinking; creating wind.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
21.
Heat from warm sand at the beach moves through the atmosphere by what method of heat transfer?
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
22.
The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
23.
A large house being heated by heater warms a house when the air is circulating.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
24.
Which situation best represents convection?
a)
Heat from a campfire
b)
A hot air balloon taking off
c)
Touching a hot piece of metal
d)
Getting sunburned
25.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
26.
A student placed a pencil in a cup of water. The pencil appears broken because light-
a)
always travels in a straight line
b)
bends when it passes through water
c)
makes the water in the glass evaporate
d)
reflects the pencil on the water's surface
27.
The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:
a)
mirror
b)
laser
c)
reflection
d)
refraction
28.
Material that allows light to pass through allowing you to see "clearly" to the other side
a)
opaque
b)
translucent
c)
transparent
29.
Light is a form of
a)
energy
b)
radiation
c)
reflection
30.
soak up
a)
absorb
b)
reflect
c)
refract
31.
retains most light rays
a)
white
b)
black
32.
What is the unit of measurement for work?
a)
Newtons
b)
Joules
c)
Watts
d)
Meters
33.
Which of the following is an example of work being done?
a)
Teacher sitting in a chair
b)
Book resting on desk
c)
Keys hanging from a key chain
d)
A ball being rolled on the floor
34.
Which of the following IS NOT an example of work being done?
a)
Pushing a cart in a store
b)
Shooting a basketball
c)
A stand off in tug of war
d)
Running a mile
35.
If a student uses 10 Newtons of Force to push a chair 5 meters, how much is work is being done?
a)
2 Joules
b)
.5 Joules
c)
50 Joules
d)
20 Newtons
36.
If a lion drags his prey 10 meters to his den doing 500 joules of work, how much force did he use?
a)
50 Newtons
b)
500 Joules
c)
50,000 Newtons
d)
10 Newtons
37.
a device that allows you to do work in a way that is easier
a)
machine
b)
compound machine
c)
work
d)
power
38.
a simple machine that is a flat, sloped surface
a)
inclined plane
b)
wedge
c)
lever
d)
fulcrum
39.
a device that is thick at one end and tapers to a thin edge at the other end
a)
wedge
b)
inclined plane
c)
lever
d)
fulcrum
40.
a rigid bar that is free to pivot, or rotate, on a fixed point
a)
wedge
b)
inclined plane
c)
lever
d)
fulcrum
41.
a simple machine that acts like an inclined plane wrapped around a cylinder
a)
screw
b)
pulley
c)
fulcrum
d)
compound machine
42.
a simple machine made of two circular or cylindrical objects fastened together that rotate about a common axis
a)
wheel and axle
b)
pulley
c)
screw
d)
compound machine
43.
a simple machine made of a grooved wheel with a rope or cable wrapped around it
a)
pulley
b)
wheel and axle
c)
screw
d)
lever
44.
Two examples of a pulley...
a)
knife & axe blade
b)
lightbulb & screw
c)
flagpole hoist & window blinds
d)
catapult & teeter totter
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