Gravity and magnets

What force holds the planets in motion around the sun?

• Magnetic
• Electrical
• Gravitational
• Air Resistance

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NGSS.MS-PS2-4

Which poles are attracted? 

• north and north
• south and south
• north and south

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What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

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NGSS.MS-PS2-3

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In this image, matching north poles from two magnets are introduced.  What do you predict will be the outcome?

• There will be no interaction.  The poles of magnets do not have an effect on one another.
• The two north poles will attract each other
• The two north poles will repel each other
• The two magnets will combine and become one magnet

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NGSS.MS-PS2-3

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As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

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NGSS.MS-PS2-4

The closer two objects are to each other

• the harder they will land
• have no gravitational force
• have a stronger gravitational force
• yep

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NGSS.MS-PS2-4

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

Materials that can be turned into a magnet are called _____.  These include iron, nickel, cobalt, or mixtures of these materials.

• domains
• rocks
• ferromagnets
• solids

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NGSS.MS-PS2-3

A ___ is any material that attracts iron or objects made of iron.

• magnet
• rock
• gravity
• liquid

 Materials which can be made into magnets for a short period of time when placed in a strong magnetic field are called _

• gas
• temporary magnets
• plastic
• conductors