WExit 3 Variables 10/10

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Experimental question: How do shoes affect how fast a person runs?
What is the dependent variable?

I will measure the type of shoe

I will measure how fast the person runs

I will measure the type of track the person runs on

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I will change the type of shoe each time the person runs

I will change how fast the person runs each time

I will change the type of track each time the person runs

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The type of shoe should stay the same each time

The type of track the person runs on should stay the same

How fast the person runs should stay the same

The starting line should stay the same each time

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About half the light reflects off pieces of silver painted onto the back of the glass, and half the light transmits through the un-silvered parts.

All the light reflects off of silver painted onto the back.

Most light transmits through, but a little bit of light reflects off small pieces of dust and other impurities.