Faraday cage

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/faraday-cage

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 Faraday cage?1836
2. What is the discoverer?Michael Faraday
3. What is the principle?Redistribution of charges in a conductor cancels external electric fields internally
4. What is a Faraday cage and how does it protect us from lightning?A Faraday cage is a special box made of metal that stops electric fields from getting inside. When lightning or other electric waves hit the metal, the metal’s free charges move around and create a new field that cancels the outside one, so the inside stays safe.
5. How does a Faraday cage work to stop electric waves?It works because the metal’s charges rearrange themselves when an electric field touches the cage. This rearrangement creates an opposite field inside the cage, so the electric waves can’t reach the inside.

Electromagnetic interference (EMI): Disturbance that affects an electronic device due to external electromagnetic fields.
Radio frequency interference (RFI): A specific type of EMI caused by radio waves or electromagnetic signals.
Anechoic chamber: A specially designed room that absorbs electromagnetic waves, acting as a large Faraday cage.
Wavelength: The spatial period of a periodic wave, the distance over which the wave's shape repeats.