Radio wave

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/radio-wave

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. How tall is Radio wave?By Heinrich Hertz in 1887
2. What is the predicted by?James Clerk Maxwell in the 1860s
3. What is the frequency range?Approximately 3 kHz to 300 GHz
4. What are radio waves and how are they made?Radio waves are invisible waves that travel at the speed of light. They are made when electric charges in an antenna move back and forth.
5. How can radio waves travel through empty space?Radio waves are a type of electromagnetic wave, so they don't need air or water to move. They can go through the vacuum of space.

Electromagnetic Spectrum: The entire range of electromagnetic radiation, ordered by frequency and wavelength, including radio waves.
Wavelength: The spatial period of a periodic wave, the distance over which the wave's shape repeats.
Frequency: The number of cycles of a wave that pass a point per unit of time, measured in Hertz (Hz).
Modulation: The process of encoding information onto a carrier wave for transmission.