Electromagnetic radiation

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-radiation

1. What is the wave nature?
2. What is the particle nature?
3. How do electromagnetic waves travel through space without a medium?
4. What are the different types of electromagnetic waves and what do we use them for?

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 wave nature?Exhibits properties like wavelength, frequency, and interference
2. What is the particle nature?Exists as discrete energy packets called photons
3. How do electromagnetic waves travel through space without a medium?Because changing electric and magnetic fields create each other, the waves can keep moving on their own. They don't need air or water, so they can travel through empty space.
4. What are the different types of electromagnetic waves and what do we use them for?The spectrum has many kinds: radio waves for TV and phones, microwaves for cooking and radar, infrared for heat and remote controls, visible light that we can see, ultraviolet from the sun, X‑rays for medical pictures, and gamma rays used in cancer treatment.

Photon: A quantum of electromagnetic radiation, behaving as a particle of light.
Quantum Electrodynamics (QED): A quantum field theory describing the interaction of light and matter.
Photoelectric Effect: The emission of electrons from a material when light shines on it.