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U5 Forces In Nature
Test Description: Electric Current, Magnets, Static Electricity
Instructions: Answer all questions to get your test result.
1) In an electric generator, such as at a power plant, what produces electric current?
A
A magnetic field being quickly turned on and off
B
The movement of wire coils in a magnetic field
C
The movement of magnets around wire coils
D
Rapid coiling and uncoiling of wire around a magnet
2) a circuit that has only one path for the electric current to follow or in which all included devices receive the same current
A
ion circuit
B
electric circuit
C
parallel circuit
D
series circuit
3) Magnetism created by an electric current; ex: MRI or electric motor
A
thermal magnetism
B
electromagnetism
C
mechanical magnetism
D
solar magnetism
4) Electric current flows in a closed electric circuit
A
From positive pole of dry cell to negative one
B
From negative pole of dry cell to positive one
C
All of the above choices
D
The poles of dry cell doesn’t produce current
5) A region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle.
A
Electric Charge
B
Magnetic Field
C
Force Field
D
Electric Field
6) The electrical components form a path for the electric current to flow through. The path is called an electric ....
A
current
B
sound
C
wire
D
circuit
7) This illustration shows a hand generator. Turning the handle of the generator spins a magnet and creates an electric current that lights the bulb. Which of the following observations can be used to indicate the strength of the current created by th
A
The size of the magnet
B
The mass of the generator
C
The brightness of the bulb
D
The length of the handle
8) What is electric current?
A
Flow of electrons
B
Flow of neutrons
C
Breakdown of the nucleus
D
Flow of protons
9) Electric current can be generated by
A
harnessing the magnetic energy in the earth's atmosphere
B
capturing the flow of electricity with a meter
C
sliding a magnet back and forth through a coil of wire
D
attaching a compass to a lodestone
10) A material that resists electric current
A
conductor
B
insulator
C
electron
D
static electricity
11) Electric current passes easily through a
A
conductor
B
insulator
C
switch
D
resistor
12) What happens when electric current in an electromagnet is stopped?
A
The electrical energy becomes stronger.
B
The wires becomes magnetized.
C
The wire loses its magnetism.
D
The electromagnet becomes stronger.
13) Tyler hangs a magnet from a string. He then takes another magnet and moves it toward the magnet on the string. Both magnet have the south pole facing each other. What will happen to the magnet on the string?
A
It will stay in the same position
B
It will begin to spin around in a circle.
C
It will be attracted to the other magnet
D
It will move away from the other magnet.
14) If you attach a magnet to a string so that the magnet is free to rotate, you will see that one end of the magnet will point...
A
east
B
west
C
southwest
D
north
15) Jane puts the north pole of a bar magnet near an object on her desk. As the magnet gets closer to the object, the object is repelled and moves away from the magnet. Which of th
A
The object is a magnet or has been magnetized.
B
The object is not made of metal.
C
The object has randomly-arranged domains.
D
The object has a north pole but no south pole.
16) Mohamed puts a nail closer to a magnet to see when the magnet will attract it. What property is he testing?
A
the size of the magnet
B
the strength of the magnet
17) What would happen to the magnetic field of a magnet if another magnet was introduced?
A
The magnetic field would increase
B
The magnetic fields would cancel each other out
C
Nothing would change
D
The magnetic field would decrease
18) The type of magnet that is said to be inside the Earth is a _________ magnet
A
doughnut
B
bar
C
wand
D
horseshoe
19) Sam was shown four objects, one of which did not contain a magnet. Which should be selected as the one that does NOT contain a magnet?
A
Wind-up clock
B
Electric can opener
C
Cassette recorder
D
Television
20) If you wanted to use one magnet to pick up another magnet, what shoud you do?
A
touch the first magets's norht pole to the second magetcs north pole.
B
touch the first magets north pole to the second magets south pole
C
demagnetize both magnets so netiher one has a north or south pole
D
touch the first magets south pole to the second magets south pole
*select an answer for all questions
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