Multiple choice

What is the source of most electromagnetic radiation on Earth?

  1. the Sun

  2. the moon

  3. light bulbs

  4. flashlights
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Sun emits a vast amount of electromagnetic radiation across the spectrum, which is the primary energy source for Earth. While bulbs and flashlights produce light, they are not the primary source for the planet.

Keep practicing — related questions