Click on the radio buttons in front
of the correct answers to the questions.
1.The electromagnetic radiation
of a wavelength is called
2. Energy emitted in the form of
a wave as a result of the movement of electric charges is
3. Electromagnetic waves need matter
4. Humans can see all light waves.
5. The study of light is called
6. The speed of light is around
186,000 miles per second
186,000 miles per minute
186,000 miles per hour