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WorksheetsEnergy Review
Total questions: 56
Worksheet time: 36mins
When you rub your hands together on a cold day, what type of energy transformation is primarily taking place?
Mechanical to Thermal
Electrical to Thermal
Chemical to Mechanical
Light to Thermal
What is the primary energy transformation in a hydroelectric power plant?
Chemical to Electrical
Mechanical to Electrical
Thermal to Mechanical
Electromagnetic to Electrical
In a flashlight, what type of energy transformation first occurs when the switch is turned on?
Chemical to Electrical
Electrical to Light
Mechanical to Electrical
Chemical to Light
During nuclear fission, which type of energy transformation primarily occurs?
Chemical to Nuclear
Nuclear to Thermal
Mechanical to Nuclear
Electrical to Nuclear
What type of energy is primarily used by plants to perform photosynthesis?
Chemical
Light
Thermal
Electrical
In an electric water heater, electrical energy is converted into what type of energy?
Light
Sound
Thermal
Mechanical
When a battery powers a motor, which sequence of energy transformation occurs?
Chemical -> Electrical -> Mechanical
Electrical -> Chemical -> Mechanical
Mechanical -> Electrical -> Chemical
Chemical -> Mechanical -> Electrical
3. How does a hydroelectric dam convert energy from flowing water into electrical energy? A) B) C) By using the force of water to turn turbines, which generate electricity D)
By converting sound waves into electrical signals
By using the force of water to turn turbines (mechanical) into Electricity.
By transforming thermal energy into mechanical energy
By converting light energy into electrical energy
In a solar-powered calculator, what energy transformation occurs when sunlight hits the solar cells? A) B) C) D)
Nuclear to thermal
Light to electrical
Mechanical to electrical
Sound to chemical
Which of the following represents a sequence of energy transformations in a nuclear power plant?
Thermal to chemical to nuclear to electrical
Electrical to mechanical to thermal to nuclear
Mechanical to thermal to nuclear to electrical
Nuclear to thermal to mechanical to electrical
Which of the following is the form of energy illustrated by a fan spinning its blades?
motional
thermal
electrical
mechanical
Which of the following would increase the amount of potential energy on an object?
increasing its mass
increasing its distance above the surface
taking it to a planet with a larger "g"
all of these
Which of the following would decease the kinetic energy of an object?
increasing the speed of the object
increasing the mass of the object
having the motion of the object cover less distance in a specific amount of time
none of these
When solving for the kinetic energy of an object, you should.....
square the velocity, then multiply by the mass, then divide by 1/2
square the velocity, then multiply by the mass, then divide by 2
multiply the mass and velocity, then square the product and divide by 2
multiply the mass and velocity, then square the product and divide by 1/2
What did you do to the car with the car, marbles and ramp lab to increase its kinetic energy?
Decrease mass
Add marbles and bring the ramp down on the physics stand
Add marbles and increase the distance from the table
Decrease distance
Which of the following would you predict to use the most power?
a portable fan
pencil sharpener
portable heater with a moving fan
data collector/timer with both photogate blocked
The SI Unit for power is the ____________, for work is the ___________, for potential energy is the _________, and for kinetic energy is the _________.
watt, joule, kilowatt, joule
watt, joule, volt, joule
joule, watt, joule, joule
watt, joule, joule, joule
If you have to carry 20 objects of equal mass a distance of 5 meters, which of the following requires the most work?
1 trip
4 trips with 5 items each
5 trips with 4 items each
the number of trips doesn't matter since you are carrying specific objects a specific distance
Which requires more work?
carrying 3 objects of a mass of 2 grams in 3 trips of 5 meters each
carrying 2 objects of a mass of 2 grams 5 meters and then carrying 1 object of a mass of 2 grams 5 meters
carrying 3 objects of a mass of 2 grams 5 meters in one trip
none of these
Which of the following forms of energy would be illustrated when roasting a marshmallow to the point where it turns black?
thermal and chemical
potential, kinetic, thermal, chemical
gravitational, thermal, chemical
gravitational and thermal
Which of the following uses the most power and why?
a LED light bulb, thermal energy too
a CFL light bulb, radiant energy too
an incandescent light bulb, radiant and thermal energy too
a fluorescent light bulb, radiant energy too
When you apply sunblock before going into the sun, which of the forms of energy are being illustrated?
chemical, thermal, potential
radiant, thermal
thermal, chemical, radiant
radiant, chemical, gravitational
Which of the following used the most power?
cell phone charger with phone attached
hair dryer on hot and high
timer with both photogates blocked
Uncle Sam inflatable
Which of the following is true?
To find potential energy, you multiply kilograms by meters
To find kinetic energy, you multiply Newtons by meters
To find the mass of an object, you would divide the potential energy by the meters
To find the mass of an object, you would divide the potential energy by the meters and then divide by 9.8
To find potential energy, which of the following is true?
mass must be in grams and distance must be in meters
weight must be in pounds and distance must be in meters
multiply weight by meters
none of these
Which of the following would have the most kinetic energy? (all hitting the same number of rubberbands)
car with 0 marbles from the 3rd opening
car with 3 marbles from the 3rd opening
car with 0 marbles from the 7th opening
car with 3 marbles from the 7th opening
Which example below uses only mechanical energy?
A. Watching your favorite TV show with your family
B. Hitting a baseball with a baseball bat in the front yard
C. Talking to your grandmother on the telephone
D. Heating up hot water on the stove for hot chocolate
When you rub your hands together, this is an example of ________ and ________energy.
Sound and thermal
Kinetic and thermal
Thermal and mechanical
Mechanical and potential
What is the unit of Velocity?
m/s
m/s2
m2/s2
m
What type of energy is needed for a battery?
Electric Potential
Electrical
Nuclear
Radiant
What is a joule?
1 kg x m/s2
1 kg x m
1 kg x m2/s2
1 m2/s2
How fast does gravity accelerate?
9.8 m/s
6.67 x 10-11kg
6.67 m2/s2
9.8 m/s2
What is the law of conservation of energy?
Where energy can't be created or destroyed
Where energy is the same always
Where energy is able to be always used
Where energy cant be converted into any other forms
The sum of kinetic and potential energy is
Magnetic Energy
Mechanical Energy
Velocity Squared
Kinetic Energy
What is the Kinetic Energy of an object moving at 1 m/s and has a mass of 2 kg?
2 Joules
1 Joules
0.5 Joules
4 Joules
Radiant Energy is what type of Energy?
Kinetic Energy
Potential Energy
Nuclear Energy
Sound Energy
If a roller coaster at the very top of a drop has 9000 Joules of Potential Energy, how much Mechanical Energy does it have?
9000 Joules
18000 Joules
4500 Joules
10000 Joules
Which of these is not a power source?
Biomass
Geothermal Activity
Nuclear Power
Gravitational Power
