1) List the five chief types of radiation in order of increasing wavelength. Use the internet to find a typical wavelength in meters of each of the five types.Then find out what object would be similar in size to each of the five wavelengths you listed.
2) Suppose you are an astronomer who is planning to collect radio waves emitted by gas clouds in our galaxy. What kind of collector will you choose to collect radio waves? Where will you put your collector, in your backyard? Explain your answer briefly.
3) Some infrared telescopes are built on volcanoes, such as those in Hawaii. Using the material presented in lecture video 9 explain why they are placed there. Using the material presented in lecture video 9 give one good reason why the Moon would be a good place to put a telescope and one good reason why it would not be a good place to put a telescope .
4) Using the material presented in lecture video 9, explain briefly why the sky appears blue during the daytime and why clouds appears white or gray during the daytime.
