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Energy Transformations - Part 1
Test Description: Energy transformations
Instructions: Answer all questions to get your test result.
1) Electrical energy is -
A
the energy form originated by the electromagnetic waves or fields
B
the energy form which is present in vibrations of air
C
the energy type due to the movement of electrons
2) The total energy in our universe -
A
changes and expands over time
B
only changes forms once
C
will not change, but can transform to the other types
3) Food chains and food webs are examples of energy transformations
A
False
B
True
4) Chemical energy is -
A
the energy of electric currents
B
the energy of electromagnetic waves
C
energy stored in bonds between atoms
5) Choose an example of the following energy transformation electrical to mechanical to sound
A
a deer eating grass
B
a digital bathroom scale
C
a pencil sharpener plugged into an outlet
6) Which energy transformation occurs when a flashlight shines?
A
chemical to electrical to light
B
chemical to electrical to chemical
C
thermal to mechanical to electrical
7) Which shows light energy transforming into chemical energy?
A
a broken glow stick
B
a plant making its own food in the sunlight
C
a battery turning on a fan
8) Which represents the energy transformation of chemical to light?
A
an electric toaster
B
a lamp plugged into a socket
C
a burning candle
9) Explain the energy transformation that occurs when water in a river dam turns turbines making electricity and lights a house
A
mechanical to chemical to light
B
mechanical to electrical to light
C
electrical to mechanical to light
10) Which shows chemical to electrical to light energy?
A
a battery makes a flashlight shine
B
a match lights up a dark cave
C
a candle glows in the dark
11) When a lamp is plugged into a wall socket and works it represents -
A
electrical to light
B
chemical to electrical
C
chemical to light
12) Thermal energy is described as -
A
electrons moving in a circuit
B
air vibrations moving
C
the transfer of heat
13) If a boy eats a meal and then runs a mile. What transfer of energy took place?
A
solar to chemical
B
chemical to mechanical
C
chemical to electrical
14) What types of energy do you observe while watching television?
A
sound and chemical
B
light, thermal and sound
C
mechanical and electrical
15) If a battery powers a circuit to turn a light bulb on, what type of energy comes from the battery?
A
chemical
B
light
C
electrical
16) Which device converts electrical energy into sound energy?
A
drum
B
flashlight
C
ipod
*select an answer for all questions
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