Light and Relativity - Prefinal and Final Terms

Electromagnetic induction is change in ___________________. 

• surface area
• magnetic poles
• magnetic flux

Can you produce current in a wire with a magnet that is sitting still?

• Yes; having a magnet near a wire is enough to excite the electrons

• No; the magnetic field has to be changing to excite the electrons

• No; magnets cannot create electricity

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Every magnet has a north and a south pole.

• True

• False

The speed of light (c) =

• 3 x 10⁸ miles/hour
• 3 x 10⁸ meters/second
• 3 x 10⁸ kilometers/hour
• none of these

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A postulate is something that is accepted as true at the beginning of a logical article.

• True
• False

How many postulates are there in the special theory of relativity?

• 1
• 2
• 3
• 4

The speed of light is constant in all frames of reference.

• True
• False

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One of the most startling consequences of time dilation is that a moving clock ______________ relative to a stationary observer.

• Speeds up
• Slows down

We experience Einstein's Theory of Relativity in our everyday life when we use

• Global Positioning System
• Microwave ovens.
• Toasters
• Graphing Calculators

When you approach a light source, the light from that source has a speed 

• greater than c. 
• less than c. 
• equal to c.
  

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