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WES SCIENCE Electricity
Test Description: 4th grade science / electricity
Instructions: Answer all questions to get your test result.
1) An electric current is the continuous flow of negative charges called:
A
electrons
B
protons
C
quarks
D
neutrons
2) A _______ circuit is a complete circuit where everything is connected. Electricity can easily flow through it.
A
closed
B
medium
C
open
D
square
3) An open circuit is an __________ circuit, where there is some part of the circuit that is NOT CONNECTED. Electricity CANNOT flow through it
A
wide
B
complete
C
regular
D
incomplete
4) An _________ is a material that does NOT conduct electricity well. Examples include rubber, plastic, and wood.
A
insulator
B
splitter
C
transmitter
D
conductor
5) Which of the following is an insulator?
A
rubber
B
water
C
metal pan
D
copper wire
6) A ________ _____ is an invisible force field around every magnet. Lines of force extend from the poles of a magnet in an arched pattern
A
magnetic field
B
baseball field
C
football field
D
soccer field
7) Which of the following is NOT an insulator?
A
copper
B
plastic
C
rubber
D
wood
8) Benjamin Franklin conducted research to prove that _________ was really an electrical spark, named the positive (+) and negative (-) charges
A
lightning
B
thunder
C
sound
D
light
9) You can create an _____________ by wrapping a wire around certain iron-bearing metals (iron nail) and connecting the wire to a battery.
A
electromagnet
B
mess
C
telescope
D
microscope
10) Why do socks stick together in the dryer?
A
friendship
B
magnetism
C
static electricity
D
no one knows
11) Which pair of objects are BOTH good electrical conductors?
A
paper and washer
B
paper clip and nail
C
plastic button and foil
D
cork and eraser
*select an answer for all questions
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