Download Chapter 4 Instruments Name What do we call the energy emitted by

Chapter 4 Instruments
Name _______________________________________
1. What do we call the energy emitted by stars?
2. Give 5 examples of electromagnetic radiation.
3. What is light?
4. What is one major difference between the various types of electromagnetic
radiation?
5. How fast does light travel?
6. What is one property that all electromagnetic radiations have in common?
7. Name all the colors we find in white light.
8. What form of electromagnetic radiation gives us a sunburn?
9. What form of electromagnetic radiation keeps food warm?
10. What form of electromagnetic radiation cooks our food?
11. Who first measured the speed of light? How did he do it?
12. Describe how Michelson determined the speed of light.
13. What are three uses of spectra?
14. What are the important parts in a spectroscope?
15. What happens in an atom that causes us to see bright lines of color when viewing
the atom through a spectroscope?
16. List and describe the three different types of spectra. What produces each type?
17. What are three advantages of using a telescope to view the stars?
18. What is resolution?
19. What are the two basic types of optical telescopes?
20. Draw a simple diagram of a refracting telescope and reflecting telescope. Give
their names and be sure to label the important parts. Trace the path light takes in
each.
21. What are three disadvantages of using refracting telescopes?
22. What is chromatic aberration?
23. What are three advantages of telescopes that have mirrors?
24. Why are reflecting mirrors made parabolic?
25. What is spherical aberration?
26. What are some disadvantages to using a reflecting telescope?
27. How do we measure the size of a telescope?
28. Describe active optics.
29. Describe adaptive optics.
30. What is interferometry? What Observatory is currently using this technique?
31. Who was the first person to trace radio noise to the stars?
32. Why must radio telescopes be larger than optical telescopes?
33. How large is the Hale Telescope? Where is it located?
34. Where is the largest concentration of telescopes in continental USA?
35. Where is the best Earth-based site for telescopes? Why?
36. Describe the Keck telescopes.
37. What is the name of the largest refractor in the world? Where is it?
38. What is located in Arecibo Puerto Rico?
39. What is special about the VLTI telescope being built in Chili?
40. What is the VLA? Where is it?
41. What happens to the magnification power of a lens as the object gets further and
further away? ( Remember the lens lab!)
42. Why can’t we make refracting telescopes bigger than 40 inches across?
43. Describe the VLBA ( Very Long Baseline Array).
44. Where is the Hubble Telescope? What was the original problem with the mirror?
45. What part of the electromagnetic spectrum did the Compton Telescope “see”.
Where was it located?
46. What part of the electromagnetic spectrum does the Chandra Telescope view?
Where is it located?
47. What part of the electromagnetic spectrum does the Spitzer Telescope view?
Where is it located?