Book N Ch 2 Chapter Test
Read each question carefully and choose the correct answer.
- 1.Group of atoms with aligned magnetic poles.
- A.
Motor
- B.
Electromagnet
- C.
Magnetic domain
- D.
Aurora
- 2.Device that converts electric energy into kinetic energy
- A.
Transformer
- B.
Motor
- C.
Generator
- D.
Electromagnet
- 3.Current-carrying wire wrapped around an iron core
- A.
Aurora
- B.
Electromagnet
- C.
Motor
- D.
Alternating
- 4.LIght emitted in a display sometimes called the "Northern Lights"
- A.
Magnetic field
- B.
Generator
- C.
Magnetic domain
- D.
Aurora
- 5.Uses magnetism to produce electric power
- A.
Generator
- B.
Motor
- C.
Transformer
- D.
Magnetic domain
- 6.Changes the voltage of an alternating current
- A.
Electromagnet
- B.
Generator
- C.
Tranformer
- D.
Magnetosphere
- 7.Area around a magnet where magnetic forces act
- A.
Magnetic field
- B.
Electromagnet
- C.
Magnetosphere
- D.
Magnetic domain
- 8.Current that changes direction
- A.
Direct current
- B.
Alternating current
- C.
Motor
- D.
Electromagnet
- 9.Earth's magnetic field
- A.
Magnetosphere
- B.
Electrosphere
- C.
Hydrosphere
- D.
Aurora
- 10.Moving a magnet in and out of a coil of wire produces a(n)
- A.
Increase in voltage
- B.
Stronger magnetic filed
- C.
Electric current
- D.
Electromagnet
- 11.If both coils of a transformer have the same number of turns, the output voltage will be ___ compared to the input voltage.
- A.
Stepped up
- B.
Stepped down
- C.
The same
- D.
Cancelled
- 12.The aurora are produced when Earth's magnetic field interacts with ___
- A.
The Van Allen belt
- B.
Electrically charged particles
- C.
The Sun's magnetic field
- D.
The biosphere
- 13.The Sun emits ___ that stream through the solar system.
- A.
Earth's magnetosphere
- B.
Auroras
- C.
A biosphere
- D.
charged particles
- 14.The core of an electromagnets is usually made of
- A.
Glass
- B.
Copper
- C.
Iron
- D.
Aluminum
- 15.A magnetic field exists around a wire whenever
- A.
The wire is coiled
- B.
The wire is wrapped around an iron nail
- C.
A magnet attracts a wire
- D.
Current flows through a wire
- 16.The domains in an unmagnetized material that can be magnetized are aligned
- A.
In all directions
- B.
North to south
- C.
In only one direction
- D.
In opposite directions
- 17.Magnetic force is exerted through
- A.
The north poles only
- B.
The south poles only
- C.
A magnetic field
- D.
An aurora
- 18.An electric current that flows back and forth in a circuit is a(n)
- A.
Direct current
- B.
Alternating current
- C.
Induced current
- D.
Transformed current
- 19.A moving electric charge creates
- A.
A magnetic field
- B.
Solar radiation
- C.
Neutrons
- D.
Static electricity
- 20.In a bar magnet, the lines of force are strongest
- A.
In the center
- B.
At the poles
- C.
On the sides
- 21.Place a checkmark on all of the ways an electromagnet can be increased in strength.
- A.
Increase the current
- B.
Decrease the number of coild
- C.
Increase the number of coils
- D.
Use a larger battery
- E.
Use a smaller battery
- F.
Use a larger core
- 22.Electricity flowing through a coil of wire produces
- A.
A magnetic field
- B.
An alternating current
- C.
A compass
- 23.A doorbell works because it contains a(n)
- A.
Electric motor
- B.
Electromagnet
- C.
Transformer
Questions: 9 | Attempts: 183489 | Last updated: Aug 17, 2018
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