Test Your Knowledge About
Describe how a Fresnel lens works.
What is your favorite lighthouse and why?
Which of these fuel sources have been used in
(check all that apply)
Sperm Whale Oil
Which of the following have contributed to making
lighthouses not as vital as they once were?
Global positioning systems
All of the above
Who invented the Fresnel lens?
Unique markings are painted on lighthouses
scare away birds
hide them in the fog
make them look different
make them beautiful
make them visible
(select the most appropriate options-make multiple
selections with Command+Click on the Macintosh
and Ctrl+Click on Windows)