Electromagnetic spectrum

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/electromagnetic-spectrum

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 historical context?James Clerk Maxwell's equations predicted electromagnetic waves, experimentally confirmed by Heinrich Hertz
2. Why can we see some light but not others?We can see visible light because our eyes are sensitive to that narrow range; other waves are invisible but still affect us.
3. How did scientists discover invisible light?James Clerk Maxwell predicted electromagnetic waves, and Heinrich Hertz proved them by making radio waves in the 1880s.

Electromagnetic Radiation: Energy propagated as waves of oscillating electric and magnetic fields, traveling at the speed of light.
Wavelength and Frequency: Inverse properties defining the position of radiation within the spectrum and its energy level.
Planck's Constant (h): A fundamental constant relating the energy of a photon to its frequency.
Ionization: The process by which an atom or molecule gains or loses an electric charge, often caused by high-energy EM radiation.