Here are the answers to the questions you've provided:
Question 1: Why does light travel faster in air than in water?
Answer: Air is a lower-density medium than water.
Question 2: What is the electromagnetic (EM) spectrum?
Answer: A range of waves with varying frequencies and wavelengths, including visible light, radio waves, and x-rays.
Question 3: What is the difference between the way bees and humans see light?
Answer: Bees can see ultraviolet light, which humans cannot see.
Question 4: Which of the following statements is true about electromagnetic waves?
Answer: Visible light has higher frequencies and shorter wavelengths than radio waves.
If you have any more questions or need further clarification, feel free to ask!