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Worksheets6th_Topic 3_Test Review
Total questions: 33
Worksheet time: 32mins
Measure of energy transfer when an object is moved over a distance by a force.
distance
force
work
power
Units for power
Newtons
Joules
Meters
Watts
Solve
F= 50 N
d= 5 m
W= ?
W=F×d
250 J
0.1 J
10 J
Solve
F= 40 N
d= ?
W= 5 J
d=FW
200 m
0.125 m
8 m
What is an example of potential energy?
A bowling ball rolling down a lane
A car parked in a lot
An apple falling from a tree
Sunlight heating up the atmosphere
What is nuclear energy?
Energy in the nucleus of an atom
Energy in the particles of an object
Energy that is carried by electromagnetic waves
Energy in a system of objects
Which of the following show a change from kinetic energy to potential energy? (Multiple right answers)
A sled sliding up a hill
A ball that is thrown into the air
A car driving down a hill
A rubber band being stretched
Which of the following describes an energy transformation? (Multiple right answers)
When energy is lost due to friction
An electric motor moving a car
A solar panel powering a home
A television projecting a show
What transformation occurs in a toaster?
Electrical to radiation
Electrical to thermal
Thermal to mechanical
Solar to electrical
What type of energy transformation occurs when a piece of wood burns?
Electrical energy is released as radiant energy
Stored chemical energy is released as thermal energy
Mechanical energy is stored as chemical energy
No transformation occurs
Recording marble speeds on roller coaster ramps proved that the most kinetic energy is at the bottom of the tallest hill.
True
False
The SI unit of work is
joule
newton
meter
none
work= forcex___
volume
time
distance
speed
Which of the following shows that chemical energy is changed to mechanical energy?
lighting of candle
switching on of a flashlight
using sunlight to dry up clothes
an athlete run after drinking fruit shake
How much power is used if a force of 35 Newtons is used to push a box a distance of 10 meters in five seconds? (Hint: Solve for work first. This is a 2-step problem.)
70 W
3.5 W
7 W
350 J
What is the power of a kitchen blender if it can perform 3,750 Joules of work in 15 seconds?
250 W
0.004 W
56,250 W
25 W
If 2 objects are dropped from the same height the heavier object has (a) potential energy.
Chemical, nuclear and elastic energy are what types of energy?
Kinetic
Potential
A weight lifter holds a weight above his head for 30 seconds without letting it drop.
As the weight lifter holds the barbell above his head, the barbell has –
Elastic energy
Mechanical energy
Gravitational potential energy
Chemical energy
A rubber ball is dropped at Position 1 and its motion is shown in the diagram below.
At which position does the ball have the highest kinetic energy and the lowest gravitational potential energy?
1
2
3
4
A battery is placed in a flashlight, which completes a circuit (circle), then produces light when turned to the on position. What energy transformations occur?
Chemical energy to mechanical energy to radiant energy
Electrical Energy to Radiant energy to chemical energy
Chemical energy to light energy to sound energy
Electrical energy to electromagnetic energy to thermal energy
A student heats a marshmallow over an electric stove. What energy transformations occur between the stove and the marshmallow?
chemical energy to thermal energy
thermal energy to radiant energy
electric energy to thermal energy
gravitational energy to radiant energy
What energy transformations does fire have?
Thermal→ Sound Energy
Thermal→ Radiant energy
Chemical → Thermal energy
Chemical→ Sound energy
What form of potential energy is in an apple?
Electrical
Thermal
Kinetic
Chemical
What is the energy transformation for the following image?
Mechanical to sound
Chemical to mechanical
Chemical to radiant
Radiant to electrical
What is the correct energy transformation for a wind turbine?
Mechanical to nuclear
Radiant to chemical
Mechanical to electrical
Sound to thermal
An 8kg dog chases a cat. if the dog has 400J of kinetic energy, the velocity of the dog is (a) m/s?
A golf pro swings her driver which weighs 0.15Kg at a velocity of 60 m/s. The KE of the golf club is (a) J. Type your answer
