RFID

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/rfid

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. What is the technology classification?Automated data capture technology using radio waves
2. What is the core components?RFID tag (transponder), RFID reader (interrogator), and antenna
3. What is RFID and how does it work?RFID is a technology that uses tiny invisible stickers with a microchip and antenna to talk to computers through radio waves. When a reader sends a signal, the tag powers up and sends its unique ID back to the reader.
4. Why can RFID read things without touching them?The reader creates an electromagnetic field that powers the tag and lets it send data wirelessly. This means you don't need to line up a scanner or touch the tag.

Transponder: A device that receives a signal and automatically transmits a different signal in response.
Electromagnetic Field: A field of force produced by electric and magnetic fields, used to power passive RFID tags.
Modulation/Demodulation: Processes of encoding data onto a radio wave (modulation) and extracting it (demodulation).
Line-of-Sight: The ability to see directly from one object to another, which RFID often bypasses.