Electromagnet

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/electromagnet

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who discovered Electromagnet?Hans Christian Ørsted, 1820
2. What is the first practical electromagnet?William Sturgeon, 1825
3. What is the governing principle?Ampère's Law
4. How did people first discover that electricity can make a magnet?In 1820, Hans Christian Ørsted saw a compass needle move when an electric current ran nearby. This showed that electricity and magnetism are connected.
5. Why can an electromagnet lift heavy metal objects?The wire coil produces a strong magnetic field, and a metal core like iron amplifies it. The result is a powerful magnet that can lift metal.

Ferromagnetic Material: Materials like iron that are strongly attracted to magnets and can be magnetized.
Magnetic Permeability: A measure of how easily a material can be magnetized.
Superconductivity: The phenomenon where certain materials conduct electricity with zero resistance at very low temperatures.