To Do	To Answer
Read about the electromagnetic spectrum	Describe the each portion of the electromagnetic spectrum.  How is each used in your everyday life? How is each portion difference from one another? How is electromagnetic radiation measured? Why are telescopes put into orbit? Define wavelenth, speed, wave and frequency.
Work through the Doppler Effect interactive	Describe how the Doppler Effect works? Why is the Doppler Effect used in astronomy? How and why are absorption lines read?