Fields and Forces

Magnetic field lines are closet together at the __________.

• poles
• lines

The motion of liquid _______ in the Earth's core creates a magnetic field.

• Iron
• Magnesium

Tags

NGSS.HS-ESS2-3

A(n) __________ is a device that has a magnetized needle that can spin freely.

• Compass
• Magnetic Field

repel

• to push objects away from each other
• to provide evidence that goes against a claim
• an object, diagram, or computer program that helps us
• when two objects come close together

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

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

magnetic field

• the space around a magnet in which magnetic forces can act on objects
• to separate or set apart
• one of the two opposite ends of a magnet
• to provide evidence that goes against a claim

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Attract

• To pull objects close to each other
• to push objects away from each other
• to change from one type to another
• an electric current 

Tags

NGSS.MS-PS2-4

Which of the two below result in an attractive force?

• A positive charge and a negative charge

• Two negative charges

• Two south poles

• A north pole and a south pole

• Two postive charges

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-4

Static electricity is the buildup of charges between two objects. What best explains why a balloon is attracted to hair when the two have been rubbed together?

• The balloon and hair both have positive charges

• The balloon and the hair both have negative charges

• The balloon and the hair both have neutral charges

• The balloon and the hair both have opposite charges

Tags

NGSS.MS-PS2-5

Two bar magnets are held close together. They are released and allowed to move freely. The bar magnets quickly come together. Which best explains why this happens?

• The poles facing one another are both south poles

• The poles facing one another are both north poles

• The poles facing one another are opposite poles

• One magnet was bigger than the other

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5