These Questions will help you study for your test, on the problems you need to work out make sure you show all of your work and the formulas used to work these problems out

1. Does increasing the frequency also increase its wavelength? Yes or No?
2. If not, how are these quantities related? Directly, Inversely, or not applicable?
3. Water waves are approaching a lighthouse at a rate of 1 wave every 1.2 s. The distance between adjacent crests is 7 m. What is the speed of the waves, in m/s? Please use two decimals.
4. Give as many similarities and differences as you can between sound and light waves.
5. A radar signal takes 2.7 s to go to the Moon and return. How far away was the Moon at that time, in m?
6. Radio waves of very long wavelength can penetrate farther into seawater than those of shorter wavelength. The U.S. Navy communicates with submerged submarines using 76 Hz radio waves. What is their wavelength in air, in m?
7. a) You are standing on a pier and want to spear a fish that swims by. Should you aim above, below, or exactly where the fish seems to be?

b) What if you are swimming underwater and want to spear a fish?

a) On the pier, where should you aim?

• Aim below the fish
• Aim exactly at the fish
• Aim below the fish

b) If you are swimming underwater, where should you aim?

• Aim below the fish
• Aim exactly at the fish
• Aim below the fish

1. The olive in a cocktail (n=1.35) seems to be 30 mm below the surface. What is the actual depth of the olive, in millimeters?
2. Does a spherical bubble in a pane of glass act to converge or diverge the light passing through it?

• Either converge or diverge

1. If the Earth had no atmosphere, what would be the color of the sky during the day?

• Orange
• Black
• Blue
• Yellow
• White