Electricity, Magnetism, and Gravity 7th Grade

Magnets have _______

• Poles

• Charges

Electrical forces have ______

Mrs. Tiller’s youngest son has started playing with a new toy set. Each shape in the set has a north pole on one end and a south pole on the other end.  Her son takes two of the shapes and lines up the ends. As the toy shapes are brought closer together, he begins to feel them push each other away.

What force is pushing the shapes away from each other?

• Electricity

• Magnets

• Gravity

Mrs. Tiller’s youngest son has started playing with a new toy set. Each shape in the set has a north pole on one end and a south pole on the other end.  Her son takes two of the shapes and lines up the ends. As the toy shapes are brought closer together, he begins to feel them push each other away.

Why do the sticks push away from each other?

• Magnetic Forces are repelling each other

• Magnetic Forces are attracting to each other

• Electric Forces are repelling each other

• Electric Forces are attracting each other

A child is jumping on a trampoline and notices that their hair is standing up. What causes this to happen?

• Magnetic Forces repelling

• Magnetic Forces attracting

• Electric Forces repelling

• Electric Forces attracting

Mr. York goes to pull his clothes out of the dryer and notices that one of his children accidentally left a tissue in their pants pocket! The tissue is shredded and is attached to all the clothing. When he tries to brush the tissue off, the tissue clings to the clothes!

Why is the tissue clinging to the clothes?

• Magnetic forces in the clothes attract the tissue

• The gravity in the clothes increased

• Electric forces in the clothes attract the tissue

As the mass increases, what happens to the gravitational force?

• The gravitational force decreases

• The gravitational force stays the same

• The gravitational forces increases

Will the magnets in the picture attract or repel?

• Repel

• Attract

• Do nothing

Model A is showing which type of force?

• Magnetic Force

• Electric Force

Will model A attract or repel?

• Attract

• Repel

• Neither