Magnetic Fields: Ch. 2 & 3 Review

LOOK AT THE IMAGE:

Look at the LAST system of magnets.

Which of the following down below represents this image shown? There are more than one answer.

• A force converted potential energy to kinetic energy

• A potential energy was stored in the magnet

• A magnet was moved against a force

• The magnets were released

• This is not a system

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.

Match the following: Read each vocabulary definition and match it correctly to the vocabulary terms.

• Energy involving movement

• Convert

• To move from one object to another or one place to another

• Potential energy

• To change from one type to another

• Kinetic energy

• Energy that is being stored in an object or stored

• Transfer

LOOK AT THE IMAGE:

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.

LOOK AT THE IMAGE:

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.

LOOK AT THIS IMAGE: Based on the two magnetic objects, what type of magnetic forces are we observing?

• Kinetic energy

• Attracting

• Repelling

• Potential energy

LOOK AT THE IMAGE:

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.

LOOK AT THE IMAGE:

Bryce 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 (away) the magnetic force.

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

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

How much PE & KE energy would be in these systems? Color it in. Think to yourself: What magnetic forces are we seeing?

LOOK AT THE IMAGE: 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.