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5th Grade- Electrical Energy
Test Description: Electrical energy
Instructions: Answer all questions to get your test result.
1) electrons have a _________ charge
A
neutral
B
negative
C
positive
D
strong
2) When two positive charges are brought together they
A
cause electric currents to flow
B
do nothing
C
repel
D
attract
3) In older homes, a _______ makes a break in the circuit if too much electricity is flowing. These CANNOT be fixed, and must be replaced once they are broken
A
fuse
B
dimmer switch
C
special switch
D
circuit breaker
4) Electricians usually say that every circuit in the home begins and ends at the
A
power plant
B
circuit box
C
light bulbs
D
electrical outlet
5) A ______ is used to control the flow of electricity in homes. Without this, your TV, radio, lights, and other devices would always stay on
A
volt
B
switch
C
circuit box
D
battery
6) How FAST you use electrical energy is measured in a unit called a ____
A
watt
B
volt
C
battery
D
current
7) GFCI outlets look like regular outlets, except they have
A
a dimmer switch
B
a fuse
C
only one input
D
two small buttons
8) When too much electricity flows, a ___________ automatically flips to the off position
A
circuit breaker
B
circuit heater
C
circuit stopper
D
circuit destroyer
9) ___________ measure how STRONGLY the electrons in a wire are pushed
A
current
B
kilowatt
C
watts
D
volts
10) A kilowatt is equal to
A
100 watts
B
10 watts
C
10,000 watts
D
1,000 watts
11) usually, atoms have the same number of protons and electrons
A
true
B
false
12) If left on for a long time, an energy saving bulb will use more energy than a traditional one left on for a short time.
A
true
B
false
13) Magnetism and electricity are very different
A
false
B
true
14) A circuit is a device that uses a magnet to change mechanical energy into electrical energy
A
false
B
true
15) Electric companies measure the amount of electrical energy used in a home in kilowatt hours
A
true
B
false
16) A giant spark of moving electrical charges is called
A
lightning
B
switch
C
generator
D
GFCI outlet
17) A special outlet that can switch off in a dangerous situation is called a
A
lightning
B
GFCI outlet
C
generator
D
switch
18) A _____________ uses a magnet to change mechanical energy into electrical energy
A
GFCI outlet
B
switch
C
electric current
D
generator
19) a __________ can open or close a circuit
A
lightning
B
electric current
C
GFCI outlet
D
switch
20) wind mills use _______ energy to turn a turbine
A
coal
B
water
C
wind
D
solar
*select an answer for all questions
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