Electricity and Magnetism

What is a magnet?

• an object that produces a magnetic field and attracts certain materials like iron, nickel, and cobalt.

• A type of battery

• A type of wire used in circuits

• a type of rock found in the mountains.

Why does the Earth have magnetic fields?

• due to the movement of molten iron in its outer core.

• Due to its large size

• caused by the rotation of the Earth on its axis.

• because of the gravitational pull from the moon.

What charge does an electron have?

• Negative
• Neutral
• Positive
• Proton

What is magnetic force?

• The force that makes objects float

• The force of attraction or repulsion between two magnets

• The force of gravity on two objects

• The force of friction

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What is an electric force?

• The force of attraction or repulsion between electrically charged objects.
• The force of magnetism between two objects
• The force of friction between two surfaces
• The force of gravity between two objects

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What is magnetism and how is it created?

• Magnetism is a type of sound; it's created by vibrations

• Magnetism is a type of light; it's created by the sun

• Magnetism is a type of electricity; it's created by flowing electrons

• Magnetism is a non-contact force; it's created by electrons spinning in the same direction.

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How are the poles of a magnet bar labeled?

• East (E) and West (W)

• Left (L) and Right (R)
• Up (U) and Down (D)
• North (N) and South (S)

Which of the following is an example of magnetic attraction?

• When a non-magnetic material attracts iron filings, it demonstrates magnetic attraction.

• When a magnet repels iron filings, it demonstrates magnetic attraction.

• When a magnet attracts plastic, it demonstrates magnetic attraction.

• When a magnet attracts iron filings, it demonstrates magnetic attraction.

Which of the following is an example of magnetic repulsion?

• Two magnets with their opposite poles facing each other.

• Two magnets with their north poles facing each other

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What are the areas around the poles and surrounding magnets called?

• pole fields

• magnetic zones
• neutral zone

• magnetic fields