Magnetic Field

Magnetic field lines always cross.

• True

• False

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

• Iron

• Magnesium

Tags

NGSS.HS-PS2-5

A compass behaves as it does because each needle acts as a(n) ___________.

• Magnet

• Guide

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What do magnetic field lines look like when two magnets repel?

• Most field lines connect a pole of one magnet to a pole of the other magnet

• All field lines connect one pole of a magnet to the opposite pole of the same magnet

Francisco is holding two magnets close to each other. What will happen when he lets go?

• The magnets will move away from each other because the magnetic force will push the magnets apart.

• The magnets will move closer to each other because the magnetic force will pull the magnets together.

• The magnets will not move because the magnets are not touching.

• The magnets will move away from each other because the magnets are not touching.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnets can move other objects from a distance.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

LOOK IN THE IMAGE: Cherise sets identical magnetic cats on two tracks. At the end of each track is a blue magnet that cannot move. Cherise can move the carts one space to the left or one space to the right. Which movement will result in the largest increase in potential energy?

• Moving the cart on Track 1 one space to the right (-->)

• Moving the cart on Track one space to the left (<--)

• Moving the cart on Track 2 one space to the right (-->)

• All these movements will result in the same change in potential energy because they each move a cart the same distance.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-2

Ramon puts two magnetic toy trains very close to each other on a track. What will happen next, and why?

• The trains will move closer to each other because the magnetic force will pull the trains together.

• The trains will not move because the magnets are not touching.

• The trains will move away from each other because the magnetic force will push the trains apart.

• The trains will move away from each other because the magnets are not touching.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In a computer simulation, Jeffrey moves a magnet (Magnet 2) toward another magnet (Magnet 1) that cannot move. What happens to the potential energy in the system of magnets?

• The potential energy does not change because the magnets in the system do not change.

• The potential energy increases because Magnet 2 moves against the magnetic force.

• The potential energy decreases because Magnet 2 moves against the magnetic force.

• The potential energy decreases because Magnet 2 moves in the same direction as the magnetic force.

Tags

NGSS.MS-PS3-2

Based on the magnetic field line diagrams, what will happen next with these two set of magnets?

• The magnets in Set 1 will repel, and the magnets in Set 2 will attract.

• The magnets in Set 1 will attract, and the magnets in Set 2 will repel.

• The magnets in Set 1 will not move, and the magnets in Set 2 will attract.

• In the both sets, the magnets will attract.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5