Science Exam Review - 2nd 9 Weeks

Bob rolled his tennis ball and softball across his bedroom floor. He noticed that they traveled at different speeds. Jon added his soccer ball and a marble and rolled the four round objects across the floor using the same amount of force. Which object moved the fastest and the furthest?

• marble

• soccer ball

• softball

• tennis ball

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Jamal is lifting a box of P. E. equipment from the ground. Which force must Jamal overcome to lift the box?

• energy

• friction

• mass

• gravity

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What happens to a golf ball after it is hit into the air?

• mass increases

• friction increases

• gravity pulls on it

• matter changes state

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The amount of matter in an object.

• force 
• mass
• weight 
• pressure 

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Without gravity we would________. 

• Float away
• Stay in the ground
• Nothing would happen.
• I don't know

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Why a ball falls to the ground?

• Earth's force of gravity is GREATER than the ball's, so the ball gets attracted to the ground. 
• Earth's force of gravity is LESS than the ball's, so the ball gets attracted to the ground. 

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Why can astronauts jump and float a little on the Moon?

• Because the Moon's gravity is NOT that STRONG.
• Because the Moon's gravity is VERY STRONG. 

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Stored energy.

• Potential Energy
• Kinetic Energy

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The energy of motion.

• Potential Energy
• Kinetic Energy

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• Potential Energy
• Kinetic Energy

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