Name ___________________________________________________________________ Period __________________ Images from Space (pgs. 188-199) and Structure of the Universe (pgs. 5-13) Study Guide (Unit 4, Lesson 1 and Unit 1, Lesson 1) 1. Universe2. Solar System3. Light-year4. Star5. Planet6. Galaxy7. Void8. Rank these objects with the largest object (#1) and the smallest object (#5) _____Universe _____planet _____solar system _____natural satellites (moons) 9. What is the composition of most stars? 10. If a star is 800 light-years from Earth, how long will it take for the light to reach Earth? 11. What are the smaller bodies that orbit a star called? 12. Draw a spiral galaxy, an elliptical galaxy and an irregular galaxy. 13. What holds all the stars and other bodies together in a galaxy? 14. Which is larger the sun or the moon? Why does the moon look bigger? 15. What size is our sun compared to other stars in the universe? Circle one small medium large 16. List the terrestrial planets. What do they have in common? 17. List the gas giants. What do they have in common? 18. Which is the shorter journey? _____Earth to the sun _____ Earth to Mars _____Earth to the moon _____ Earth to Jupiter _____ Earth to Neptune 19. If you drew a picture of the sun and the 8 planets what did you draw? _____ the universe _____ a solar system 20. What is the name of our galaxy? What is its shape? 21. Wavelength – 22. Frequency – _____ a galaxy 23. Electromagnetic spectrum – 24. Spectrum – 25. Reflecting telescope – 26. Refracting telescope – 27. Radio telescope – 28. Remote sensing – 29. Satellite – 30. Geosynchronous satellite – 31. List the electromagnetic spectrum from the smallest frequency to the largest frequency. Put an X next to the wavelength that has the highest amount of energy. Put a circle around the only wavelengths we can see. Put a square around wavelengths that never reach Earth’s surface. 32. Which of the following is true about x-ray telescopes? _______ collects wavelengths shorter than gamma rays _____ collects wavelengths longer that gamma rays _____ collects wavelengths longer than visible light 33. Higher frequency waves have ___________ wavelengths (shorter or longer) and ____________ energy (more, less). 34. Why do scientists need more than one type of telescope? 35. T or F All forms of electromagnetic radiation from space can be collected by telescopes. 36. Describe the two optical telescopes. What do these telescopes collect? 37. Describe 3 non-optical telescopes. Include in your description what each telescope collects. 38. Give 4 uses for satellites. 39. List 3 things scientists learn from space images. 40. Describe the three kinds of spectra. Be able to identify each.