Mechanical Energy

To make things move, you need a −

• force.
• strong magnet.
• metal object.
• helper.

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NGSS.MS-PS2-2

A force is a −

• push.
• pull.
• magnet.
• push or pull.

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NGSS.MS-PS2-2

Which of the following is a force that pulls?

• magnetism.
• gravity.
• friction.
• all of the above.

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What is true about all forces?

• They are magnetic. 
• They push or pull. 
• They are very strong. 
• They only push.

• Every time you move metal paper clips 2 cm from the magnet, 2 more metal paper clips are attracted to i it.
• The closer the magnet is to the metal paper clips, the more metal paper clips will be attracted to it.
• More metal paper clips are attracted to the magnet at 3 cm than at 1 cm.
• Magnets should be kept 1 cm from metal paper clips.

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NGSS.MS-PS2-5

Pulling a wagon will most likely change all of the following EXCEPT its −

• motion
• position
• direction
• mass

Tags

NGSS.MS-PS2-2

• light bulb
• phone
• fire house
• bowling

The dirt road rubs against the tires of the motorcycle and most likely causes it to ―

• go faster because of friction     
• change directions
• go slower because of friction     
• win a race

Tags

NGSS.MS-PS2-2

When the football player kicks the ball it will go up in the air. What will happen next?

• Gravity will pull it up higher.

• The football player will push it higher.

• It will fall back down to the ground because gravity pulled it.

• It will fall back down to the ground because gravity pushed it.

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This girl has jumped up in the air. What force will cause her to come back to the ground?

• Gravity
• Magnetism
• Electricity
• Sound

Tags

NGSS.MS-PS2-2

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