Magnetic Fields

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

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

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

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

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

Tags

NGSS.MS-PS2-5

Based on the magnetic field line diagrams, what will happen next with these two sets 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 both sets, the magnets will attract.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

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

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

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

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

• In both sets, the magnets will attract.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In a system of magnets, there is a repelling force between ________ poles and an attracting force between __________ poles. 

• opposite, like

• like, like

• opposite, opposite

• like, opposite

A magnetic force can convert potential energy stored in a ______________________ to kinetic energy.

• magnet

• magnetic pole

• magnetic field

• energy

Tags

NGSS.MS-PS2-3

NGSS.MS-PS3-2

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.

Cherise sets identical magnetic carts 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 2 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-PS3-2

Abdul moves a magnetic toy train away from a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement?

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

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

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

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

Tags

NGSS.MS-PS2-5

NGSS.MS-PS3-2

Lucia is playing with magnetic toy vehicles. She has two identical toy vehicles (purple and pink) that start on opposite sides of a center magnet that cannot move. She moves both vehicles one space closer to the center magnet.

a. How did the potential energy of the two vehicles change?

• pink increased more

• purple increased more

• pink decreased more

• purple decreased more

Tags

NGSS.MS-PS2-3

NGSS.MS-PS3-2

Lin sets identical magnetic carts on two tracks. At the end of each track is a blue magnet that cannot move. Lin can move the carts one space to the left or one space to the right. Which movement will increase the potential energy in the system the most?

• Moving the cart on Track 2 one space to the right (?).

• Moving the cart on Track 2 one space to the left (?).

• Moving the cart on Track 1 one space to the right (?).

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

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-2