Gravitational, Electrical & Magnetic Forces

The amount of attraction between two objects which are not in contact with each other is known as the _________.

• Normal force

• Gravitational force

• Magnetic force

• Electrical force

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

What effect does increasing the distance between the two objects do to the gravitational force?

• The distance between two objects has no effect on the gravitational force

• It increases

• It stays the same

• It decreases

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NGSS.HS-PS2-4

When do gravitational forces exist between two objects?

• They only exist between microscopic objects.

• They are always present between any two objects.

• Gravitational forces only act on objects falling on Earth.

• They only exist for objects in space.

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following changes would increase the gravitational force between two objects?

• Increase G

• Increase the mass

• Increase r

• Decrease G

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NGSS.HS-PS2-4

Which answer best describes this image?

• The positive charge is repelling the negative charge.
• The blue charged object will repel the negatively red charged object.
• The positively charged red object will be attracted to the negatively charged blue object.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

A magnet cannot not move which of the following objects?

• a paper clip

• a nail

• a toothpick

• a staple

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NGSS.MS-PS2-5

Where is the force of attraction the strongest on a magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Every magnet has a:

• East and West pole

• North and South pole

• East and South pole

• North and West pole

• Chicago and Saint pole

What is the name of a magnet that stays magnetic only while it touches a permanent magnet, or one that is magnetic for a very short time?

• Temporary magnet

• Semi-Permanant magnet

• Electromagnet

• Natural Magnet

The picture is an example of an:

• Electric circuit
• Electromagnet
• Electric nail
• Electric power cell