1a. What wavelength is the color red?
1b. What wavelength is the color Blue?
2. Explain why we see plants as green colored.
3. If 12 wave cycles pass through a fixed point every 3 seconds what is the frequency of this
wave?
4. Which has more energy, a Blue or Red photon?
5. Which region of the EM spectrum (Radio, Microwave, Infrared, Visible, or Ultraviolet) will
damage biological molecules ?
6. T/F. You are emitting infrared light as you read this question.
7. Which region of the EM spectrum is efficiently absorbed by water?
8. What is the approximate wavelength of the shortest waves?
9. Which region of the EM spectrum can ionize atoms and molecules?
10. Which EM wave travels faster, a microwave or an infrared one?
11. Every EM wave carries energy with it as it moves. What happens to the energy of an EM
wave as the frequency gets higher?