You know this substance is magnetized because

all the domains have right angles

Earth acts like a giant magnet due to ______________________.

convection currents in the molten core

In this image, matching north poles from two magnets are introduced. What do you predict will be the outcome?

The two north poles will repel each other

There will be no interaction. The poles of magnets do not have an effect on one another.

The two north poles will attract each other

The two magnets will combine and become one magnet

The compass's NORTH needle will always point to geographic ___________ because Earth's magnetic ____________ pole is there.

Nonsense, Earth does not have a magnetic field!

Mark all TRUE statements regarding magnets. (2 correct answers)

Magnets have North and South seeking poles.

If a bar magnet is broken in half, each half will be a complete magnet, containing both North and South poles.

If a bar magnet is broken in half, one half will be completely North pole, and the other will be completely South pole.

ALL metallic elements are magnetic.

If a compass is placed in a magnetic field, its NORTH seeking needle will point ____________.

Toward magnetic South (which is geographic North on Earth)

Toward magnetic North (which is geographic South on Earth.)

Mark 2 correct answers: Which is true farther from a magnet?

Field lines are closer together.

The magnetic field is stronger.

Which of the following do we use as evidence of Earth's changing magnetic field over time? (only 1 correct answer.)

Iron deposits become magnetized in the direction of Earth's magnetic field.

Formation of new crust at the mid-ocean ridge.

In our study of electricity and magnetism, we use the RIGHT hand rule. We point our thumb in the direction of the ____________, our fingers show us the direction of the ___________.

Nonsense, there is no right hand rule!

Which of the following can increase the strength of an electromagnet? (mark 2 correct answers.)

Increase the number of loops of current-carrying wire.

Increase the current in the wire by increasing the voltage of the battery.

Decrease the number of loops of current-carrying wire.

Decrease the current in the wire by increasing the resistance of the wire.

What pole of Earth's magnetic field would you be close to if you visited Alaska?

Neither. Alaska is not close to any pole.

A stationary electric charge produces ___________________________________________________.

an electric field but not a magnetic field.

a magnetic field but not an electric field.

both an electric field and a magnetic field.

neither an electric field nor a magnetic field.

This symbol indicates that a part of a magnetic field is moving __________________.

out of the page/screen/whiteboard

into the page/screen/whiteboard

This symbol indicates that a part of a magnetic field is moving __________________.

into the page/screen/whiteboard

out of the page/screen/whiteboard

The strength of a magnetic field generated by an electric current is ____________________________.

directly proportional to the current

inversely proportional to the current

The strength of a magnetic field generated by an electric current is ____________________________.

inversely proportional to the distance from the wire

equal to the distance from the wire

not related to the distance from the wire

directly proportional to the distance from the wire

The needle of a compass lines up ______________________.

parallel to the lines of the magnetic field.

always pointing towards magnetic north.

perpendicular to the lines of the magnetic field.

A substance becomes magnetic when ________________.

magnetic domains are created by the alignment of spinning electrons

positive ions gather at one end and negative ions at the other end

positive charges line up on one side and negative charges on the other side

TCI Magnetism

Authored by Charles Martinez

Physics

10th - 12th Grade

NGSS covered

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61 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which effect does the right hand rule identify?

The direction of lines of force surround a current carrying conductor

the direction for reluctance in a current carrying conductor

the direction for retentivity in a current carrying conductor

the direction for residual magnetism in a current carrying conductor

Which poles are attracted? (mark 2 correct answers)

North and North

South and South

North and South

South and North

None of these, only magnetic monopoles will attract.

Which poles repel? (mark 2 correct answers)

North and South

South and North

North and North

South and South

None of these, only magnetic monopoles will repel.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is not a property of a magnet?

all magnets have two poles

all magnets have a force of attraction or repulsion

all magnets are surrounded by a magnetic field

all magnets can be turned off

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How is Earth's magnetic field similar to that of a magnet?

It's shaped like a horseshoe.

It has north and south poles.

It is made plastic.

It is hundreds of miles long.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The magnetic domains in this substance are not highly aligned. This substance is therefore

magnetized

unmagnetized

positively charged

negatively charged

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

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TCI Magnetism

Which effect does the right hand rule identify?

Which poles are attracted? (mark 2 correct answers)

Which poles repel? (mark 2 correct answers)

Which is not a property of a magnet?

How is Earth's magnetic field similar to that of a magnet?

The magnetic domains in this substance are not highly aligned. This substance is therefore

What will happen when these magnets are brought close together?

You know this substance is magnetized because

Earth acts like a giant magnet due to ______________________.

This large crane magnet functions only when the electrical current is ON. The crane magnet is an example of what type of magnet?

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