Magnets And A Little More...
- 1.Describe a magnetic field
- A.
A material that attracts other magnets and causes the force that attracts or repels a magnet
- B.
Surrounds a magnet pointing from north pole to south pole and causes the force that attracts or repels a magnet
- 2.Every magnetic field has poles: true or false
- A.
True
- B.
False
- 3.An atom is:
- A.
The smallest magnet
- B.
A magnetic field
- C.
A magnetic domain
- 4.A magnetic domain :
- A.
Requires a group of atoms with the magnetic fields lined up in the same direction
- B.
Requires only a weak magnetic field to get domains to line up in the same direciton
- 5.Earth is a magnet and has a magnetic field: true or false
- A.
True
- B.
False
- 6.What causes earth magnetic field
- A.
Requires only a weak magnetic field to get domains to line up in the same direciton
- B.
A group of atoms with the magnetic fields lined up in the same direction
- C.
The motion of magma near the earths core
- 7.How often does the earths magnetic field change directions
- A.
Every four to five thousand years
- B.
Every eight to ten years
- C.
Every four to five million years
- 8.Define magnet
- A.
A group of atoms with the magnetic fields lined up in the same direction
- B.
A material that attracts other magnets
- 9.Like magnetic poles
- A.
Repel
- B.
Attract
- 10.Describe a magnetic field
- A.
A material that attracts other magnets and causes the force that attracts or repels a magnet
- B.
Surrounds a magnet pointing from north pole to south pole and causes the force that attracts or repels a magnet
- 11.An atom is:
- A.
The smallest magnet
- B.
A magnetic field
- C.
A magnetic domain
- 12.A magnetic domain :
- A.
Requires a group of atoms with the magnetic fields lined up in the same direction
- B.
Requires only a weak magnetic field to get domains to line up in the same direciton
- 13.Earth is a magnet and has a magnetic field: true or false
- A.
True
- B.
False
- 14.The earths magnetic field
- A.
Deflects charged particles from the sun and is used to determine direction by humans and animals
- B.
Requires only a weak magnetic field to get domains to line up in the same direciton
- C.
Is a group of atoms with the magnetic fields lined up in the same direction
- 15.What is used to increase or decrease the voltage in ac system
- A.
Transformers
- B.
Voltmeter
- 16.A material that attracts iron and materials that contain iron is called a(n)
- A.
Atom
- B.
Electron
- C.
Magnet
- D.
Pole
- 17.The area of a magnet where the magnetic force is strongest is a
- A.
Magnetic pole
- B.
Magnetic field
- C.
Magnetic field line
- D.
Magnetosphere
- 18.If two magnets were in this order: NS SN they would:
- A.
Repel
- B.
Attract
- C.
Do nothing
- 19.The smallest particle of an element is known as an:
- A.
Proton
- B.
Neutron
- C.
Electron
- D.
Atom
- 20.A particle that does not carry an electrical charge is a:
- A.
Proton
- B.
Neutron
- C.
Electron
- D.
Atom
- 21.A ferromagnetic material is:
- A.
A material that shows strong magnetic effects
- B.
A material that shows weak magnetic effects
- C.
A material that shows no magnetic effects
- 22.A magnet made of a material that keeps its magnetism is known as a:
- A.
Lifetime magnet
- B.
Energizer bunny magnet
- C.
Permanent magnet
- D.
Temporary magnet
- 23.If two magnets were in this order: NS NS they would:
- A.
Repel
- B.
Attract
- C.
Do nothing
- 24.The Earth's magnetic field
- A.
Deflects charged particles from the sun and is used to determine direction by humans and animals
- B.
Holds our atmosphere in place and keeps the magma hot in Earth's core.
- C.
Is what makes our satellites stay in the "Goldilocks" zone and not randomly fall from orbit and burn up in Earth's amazing atmosphere.
- D.
Is where our gravity comes from.
- 25.What device is used to increase or decrease the voltage in ac system?
- A.
Transformers
- B.
Voltmeter
- C.
Barometer
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