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WorksheetsEnergy Transformations
Total questions: 25
Worksheet time: 28mins
Name
Class
Date
1.
Which energy conversion best explains what takes place in a car?
a)
thermal -> electrical
b)
mechanical -> electrical
c)
chemical -> mechanical
d)
mechanical -> electromagnetic
2.
Which energy transformation best describes what happens in an oven?
a)
Electrical ->Thermal
b)
Electrical -> Radiant
c)
Electrical -> Mechanical
d)
Electrical -> Chemical
3.
Which energy transformation occurs in a toaster?
a)
chemical to electric
b)
electric to thermal
c)
kinetic to chemical
d)
thermal to potential
4.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
5.
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
6.
What is energy changing from one form to another?
a)
energy conservation
b)
energy transformation
c)
energy creation
d)
mechanical energy
7.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and velocity
c)
Mass and velocity
d)
Height and friction
8.
The purpose of solar panels is to change ___________ energy into ____________.
a)
light, electrical
b)
light, chemical
c)
thermal, electrical
d)
thermal, chemical
9.
Which answer would best fit this energy transformation:
chemical energy -> electrical, light and thermal energy
chemical energy -> electrical, light and thermal energy
a)
turning on a flashlight
b)
nuclear power plant
c)
digesting an apple
d)
tanning bed
10.
Which answer would best fit this energy transformation:
chemical energy -> mechanical energy
chemical energy -> mechanical energy
a)
person running
b)
candle burning
c)
windmill turning
d)
playing a violin
11.
The diagram below shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon. What energy transformations occur when propane gas is used to lift the balloon?
a)
Mechanical to light to chemical
b)
Chemical to mechanical to thermal
c)
Thermal to chemical to light
d)
Chemical to thermal to mechanical
12.
A hairdryer converts --
a)
electrical energy into chemical
b)
electrical energy into thermal
c)
chemical energy into mechanical
d)
thermal energy into mechanical
13.
Which object changes:
chemical energy -> heat, light and sound
chemical energy -> heat, light and sound
a)
blender
b)
firecracker
c)
light bulb
d)
apple
14.
What machine changes electrical energy into light and sound energy?
a)
battery
b)
light bulb
c)
alarm clock
d)
apple
15.
Wind turbines and windmills convert what energy to another?
a)
Mechanical to electric
b)
Gravitational potential to electric
c)
Mechanical to thermal
d)
Thermal to sound
16.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
17.
Which transformation describes the process of photosynthesis?
a)
radiant -> thermal
b)
radiant -> chemical
c)
thermal -> chemical
d)
thermal -> chemical
18.
A toy robot can walk and talk and runs on batteries. Which energy transformation best describes this?
a)
Chemical ->mechanical, sound
b)
Electrical -> mechanical, sound
c)
Chemical -> kinetic, electrical
d)
Electrical -> kinetic, sound
19.
On a cold winter day, Delia puts logs into a fireplace. Then she strikes a match and sets the logs on fire. As the fire burns, which two forms of energy are released?
a)
Radiant and Thermal
b)
Chemical and Radiant
c)
Thermal and Electrical
d)
Electrical and Chemical
20.
A group of sheep are grazing in a field. As they eat, the sheep break down the molecules in the grass, which releases energy. Which form of energy is stored in the grass?
a)
Radiant
b)
Chemical
c)
Nuclear
d)
Thermal
21.
When a hand-held fan (operated by batteries) is turned on, the blades spin. Which shows the energy conversion required to make the fan work?
a)
Electrical -> Chemical -> Radiant
b)
Electrical -> Chemical -> Mechanical
c)
Chemical -> Electrical -> Light
d)
Chemical -> Electrical -> Mechanical
22.
Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy?
a)
when the baseball is rising
b)
when the baseball is falling
c)
just after the baseball hits the ground
d)
while the baseball is stopped in the air
23.
What energy transformation best describes a cell phone ringing?
a)
Chemical -> Electrical -> Sound
b)
Chemical -> Electrical -> Radiant
c)
Electrical -> Radiant-> Sound
d)
Electrical ->Nuclear -> Radiant
24.
The best example of thermal energy is...
a)
burning logs
b)
turning on a fan
c)
the sun
d)
the nucleus of atoms
25.
Which object best fits this energy transformation:
Electrical -> Mechanical -> Sound
Electrical -> Mechanical -> Sound
a)
A triple beam balance measuring an object’s mass
b)
A pencil sharpener plugged into a wall outlet
c)
A projector displaying a diagram on the screen
d)
A working flashlight used to light up a dark corner
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