Physical SCIENCE REVIEW

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• This is electrical energy.
• This is mechanical energy.
• This is solar energy.
• This is petroleum energy.

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• The variable is the length of the ramp.
• The variable is the type of friction.
• The variable is the height of the ramp.
• The variable is the size of the car.

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• The car on ramp 1 will travel further than the car on ramp 2.
• The car on ramp 1 and ramp 2 will travel the same distance.
• The car on ramp 1 will travel less than the car on ramp 2.
• None are correct

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• True
• False

Why should you watch for ice ?

• Slick surfaces have more friction .
• Slick surfaces have less friction.

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• True
• False

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• The volume of the object is  482.63 
• The volume of the object is 200
• The volume of the object is 2.82
• The volume of the object is 800

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• Item A has a greater density than item C.
• Item C has the greatest density.
• Item B has more density than C but less than A.
• All items have the same density.

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• Less dense items will sink.
• More dense items will float
• Less dense items will float
• Density does not affect the objects ability to float

Which is not a conductor ?

•  copper
• a paper clip
• a straw
• silver