Electricity and Magnetism

Introduction to Magnetism

Magnetic materials, poles, attraction, and the origins of magnetic behavior

Introduction to Magnetism lesson illustration

Introduction to Magnetism lesson illustration

Name the part of the atom that is magnetic.

Magnetism and Magnetic Fields

School blocks YouTube? Use file below.

Full Size Video

 Scientific Advisors: Dr. Saul Dushman; Dr. Roman Smoluchowski; Dr. David Harker

Prelinger Archives

Production Company: Wolff (Raphael G.) Studios, Inc. Audio/Visual: sound, color
Creative Commons license: Public Domain

Fill In The Blank Notes

 

A) Magnetism is a force that exists between moving charges


Moving Charges Always Create Magnetism

 

 

Natural Magnetism
comes from - spinning ...

Introduction to Magnetism lesson illustration

... electrons in atoms

 

 

 

 

Electric current

(Where there is electricity
there is always magnetism !!!!)

 

 

Visualizing Magnetic Field Line

Staples / Paper / Strong Magnet

 

View the original GIF 

S
Cutaway of a speaker: an amplifier sends changing current to a voice coil that pushes and pulls against a permanent ring magnet, vibrating the paper cone to make sound waves NYSSLS Reading Passage icon

NYSSLS Reading Passage · Electricity & Magnetism

The Stone That Points North: A History of Magnetism in Human Hands

Open Reading Passage → Regents Practice Version →

Check Your Understanding

5 quick questions — pick an answer to see if you’re right.

1. Magnetism is a force that exists between:

2. Natural magnetism in materials like a bar magnet comes from:

3. Which statement best describes a wire carrying an electric current?

4. A charged balloon sits perfectly still on a table. Does its charge create a magnetic field?

5. In a speaker, a changing current flows through a voice coil next to a permanent magnet. Why does the cone vibrate?

NYSSLS Regents Practice · Magnetism · Earth’s Magnetic Field

Navigating With a Compass

A hiker uses a compass to find north. The compass needle is a small magnet that can rotate freely, and its north pole points toward Earth’s geographic North Pole.

What kind of magnetic pole is located near Earth’s geographic North Pole?

▶ Want a challenge? Open 6 more Regents-style questions  (harder · mixed formats)

Challenge score: 0 / 6

Select all that apply

C1. The hiker keeps several objects in a pack near the compass. Place a check mark in three boxes to indicate the materials that would be strongly attracted to a magnet and could disturb the compass reading.

Multiple choice

C2. A bar magnet is cut in half. What is the result?

Support or Refute · Justify

C3. A student makes the following claim.

Claim: Holding a strong bar magnet near the compass can make the needle point away from geographic north.

Place a check mark in either the Support or Refute box. Justify your response.

Multiple choice

C4. Which model best explains why an iron nail becomes magnetized when stroked with a magnet?

Select all that apply

C5. Place a check mark in two boxes to indicate observations that provide evidence that Earth itself has a magnetic field.

Constructed response

C6. Many hikers now use GPS phone apps instead of compasses. Identify one benefit and one drawback of relying on a magnetic compass for navigation.

Magnetic Fields →