Vocabulary
Magnetism
Electricity
Diagrams
Electromagnetism
100

Any material that attracts iron or materials containing iron.

A magnet

100

The opposite ends of a magnet

North and south poles

100

Magnets have two types of poles, electricity has two types of ...

charges

100

Draw a diagram of a positive charge.  Make sure your arrows are pointing the correct direction.


100

How are electromagnets different from permanent magnets?

Electromagnets can be turned on and off

200

The interaction between electricity and magnetism

Electromagnetism

200

Region around a magnet in which magnetic forces can act.

 Magnetic field

200

This combination of charges will attract

Opposite Charges

(Positive and Negative)

200

Draw a diagram of the Earth's gravitational field.  Make sure your arrows are pointing the correct direction.


200

What three things so we need to create an electromagnet?

A power source (battery), a solenoid (curled copper wire), and a core (iron nail)

300

Moving electric charges

Current

300

Groups of atoms in tiny areas that align when a magnet is nearby. Found in materials such as iron, nickel,cobalt.

Magnetic domains

300

How can we transfer charges from one object to another?

By using forces like friction

300

Draw a diagram showing the magnetic field lines of a bar magnet.  Make sure the arrows are pointing in the correct direction.


300

Name two ways to decrease the force of an electromagnet

1) Change to a smaller power source

2) Switch to a smaller, less magnetic core

3) Decrease the amount of loops in the solenoid

400

Device that measures current

Ammeter

400

These ends of a magnet would repel

Similar ends

(North and North) or (South and South)

400

A balloon has 40 negative charges.  A piece of wool has 50 positive charges and 10 negative charges.  Which one has a stronger electrostatic field?

They both have fields with a magnitude of 40 charges.  Even though they are oppositely charges, the fields will be equally strong

400

Draw a diagram of two magnets with opposite poles facing each other.  Make sure your arrows are facing the correct direction.


400

How can you turn off an electromagnet?

Open the circuit by detaching one end of the wire from the power source

500

A straight coil of wire

Solenoid

500

The reason a compass needle points to Earth's geographic North Pole.

The Earth's magnetic south pole is Earth's geographic North Pole

500

How can a negatively charged balloon stick to a neutral wall?

The negatives in the balloon attract the positives from the wall and push the wall's negatives away

500

Draw a diagram of two negative charges and their fields.  Pay attention to if they are attracting or repelling and which way the arrows should point.


500

Why doesn't static electricity create a magnetic field?

Only moving current creates a magnetic field

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