PS chapter 7

Magnetism is generated by moving

• protons.
• electrons.
• neutrons.
• elements.

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What do the lines around this magnet represent?

• North Pole
• South Pole
• Magnetic Declination
• Magnetic Field

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As the distance between two magnets increases (they get farther apart), the force between them:

• Increases
• Decreases
• Stays the Same

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If you cut a magnet in half, what happens to the poles?

• One half gets the North Pole, the other half gets the South Pole
• Both halves get only a North Pole
• Both halves get only a South Pole
• Both halves get a North pole and a South Pole

What is responsible for the Magnetic Field around Earth?

• The Earth's crust
• The Earth's molton iron core
• The Earth's mantel
• The Sun

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In un-magnetized materials the domains are __________ aligned.

• super
• slightly
• randomly
• always

Electric motors are devices that convert _____ energy into  _____ energy.

• electrical; mechanical
• mechanical; electrical
• chemical; potential
• mechanical; kinetic

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What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

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The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

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If a glass plate is placed over a magnet and iron filings are sprinkled over the glass, a pattern will be visible. What does this pattern indicate?

• The magnetic field

• The electrostatic field

• The piezoelectric effect

• The chemical reaction of the magnet and the filings

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