CHAPTER 4: MAGNETISM

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

Magnets have a north and a south ___________

• shape
• color
• pole
• region

Where is the strongest attraction force of the magnet?

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

The space/region around a magnet where the force of a magnet can attract best is called__________

• magnetism

• bar magnet

• horseshoe magnet

• magnetic field

What happens to the magnetic force as an object gets further away from the magnetic field?

• The force increases
• The force decreases
• The force stays the same
• There was no force to begin with

Tags

NGSS.MS-PS2-3

What does the following represent?

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

• Multiplied by a billion

• A piece of modern art

• Uniform magnetic field directed into the screen away from you

• Uniform magnetic field directed out of your screen at you

Magnetic flux is

• number of magnetic field lines passing through a surface perpendicular to the lines

• wire connected to a circuit and coiled into many spiral loops

• magnet whose magnetic field is produced by electric current

• characteristic of magnets that they have two opposite ends called poles

The magnetic field inside the coil shown below is directed:

• Into the page

• Out the Page

• To the left

• Towards the bottom of the page

A straight wire carries a current into the paper. What is the direction of the magnetic field at point P?

• Points to the right

• Points to the left

• Points to the top of the page

• Points to the bottom of the page

Two long, parallel wires each carry the same current I in the same direction. Is the total magnetic field at the point midway between the wires:

• Zero

• Directed into the page

• Directed out of the page

• Directed to the left