Forces and Motion Review (DIA2)

What force is created by wrapping copper wire around a metal object (like a nail) and touching both ends of the wire to the two sides of a battery?

• Magnetism

• Mechanical

• Fluid

• Gravitational

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When you rub wool or your hair on a balloon, what force is being altered that lets it stick to walls or pick up pieces of paper?

• Magnetic

• Electrical

• Normal

• Gravitational

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If two balloons are repelled away from each other, what is true of their electrical charges?

• There charges are opposite

  (One positive, one negative)

• Their charges are the same

  (Both positive or both negative)

• Their charges are balanced

• Their charges are unbalanced

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Emily sets a wooden block at the top of a ramp, and watches as it slides to the ground. Based on this observation, which statement is true?

• The force of friction was greater than the force of gravity

• The force of gravity was greater than the force of friction

• The forces of gravity and friction were balanced

• No forces were acting on the wooden block

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On a speed graph (or a distance-time graph), a straight line means the object was moving at a ____________ speed.

Which TWO pieces of information do we need to calculate an objects speed? CHOOSE TWO

• Distance covered

• Time

• Mass

• Potential Energy

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What force keeps us in orbit of the sun?

• Gravity

• Electrical Force

• Normal Force

• Speed

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Which of the following objects would have the most gravitational force because of its mass?

• A small, potted plant

• a truck

• a goldfish

• a bean bag chair

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An object's gravity is increased when its ________________ is increased.

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If one of the properties listed below were changed on an object, it would also change that object's gravity. Which force would it be?

• hardness

• volume

• mass

• color

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