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Astronomy Study Guide
1. Which part of the spectrum can be separated into rainbow like colors?
Answer: visible light
2. Which waves have the shortest wave lengths? Longest?
Answer: gamma; radio
3. What is a spectroscope/prism used for?
Answer: split white light into colors
4. What kind spectrum is used to determine the composition of the stars outer layer?
Answer: absorption
5. If a star spectral lines are shifted towards the red end of the spectrum then the star must be?
Answer: moving away from Earth
6. What do they compare red shifts and blue shifts to?
Answer: reference elements on Earth
7. What theory states how the universe began?
Answer: Big Bang Theory
8. Two types of evidences for the big bang theory are…
Answer: red shifts and cosmic background radiation
9. One theory about the death of the universe is called the…
Answer: Big Crunch
10. Which scientist proposed the 3 planetary motion laws?
Answer: Kepler
11. What is the shape of a planet’s orbit?
Answer: elliptical
12. Hubble’s law says that a galaxy’s speed is proportional to..
Answer: distance
13. What force keeps the planets in orbit and who proposed this?
Answer: gravity; Newton
14. Greater red shifts or blue shifts indicate ___________
Answer: greater speeds
15. What causes the seasons?
Answer: Earth’s tilt
16. What is the Doppler effect?
Answer: apparent change in wavelength due to movement toward or away from the observer
17. What are the 7 forms of EMR?
Answer: radio, microwave, infrared, visible light, ultraviolet, x-rays, gamma
18. What color on the visible light spectrum is most energetic?
Answer: violet
19. What does a star’s spectrum tell the observer about the star?
Answer: composition, movement
20. What type of spectrum is produced by a typical incandescent light bulb?
Answer: continuous
21. Who developed a geocentric model of the solar system that explained what retrograde motion is?
Answer: Ptolemy
22. What is retrograde motion?
Answer: apparent backward movement due to different orbital speeds
23. Who discovered Jupiter’s 4 largest moons with a telescope?
Answer: Galileo
24. Harmonic law relates a planet’s distance to the sun with _______.
Answer: period (revolution time)
25. What is the visible layer of the sun?
Answer: photosphere
26. What are the two layers of the sun’s atmosphere?
Answer: chromospheres (inner) and corona (outer)
27. What are granules?
Answer: bright markings on the photosphere; tops of convection currents
28. What are solar flares?
Answer: explosive events on the sun’s surface
29. By studying sunspots, scientists have determine that the sun _______.
Answer: the sun rotates
30. What happens to gravity if mass increases? Distance increases?
Answers: gravity increases; gravity decreases
Astronomy Study Guide
1. Which part of the spectrum can be separated into rainbow like colors?
Answer:
2. Which waves have the shortest wave lengths? Longest?
Answer:
3. What is a spectroscope/prism used for?
Answer:
4. What kind spectrum is used to determine the composition of the stars outer layer?
Answer:
5. If a star spectral lines are shifted towards the red end of the spectrum then the star must be?
Answer:
6. What do they compare red shifts and blue shifts to?
Answer:
7. What theory states how the universe began?
Answer:
8. Two types of evidences for the big bang theory are…
Answer:
9. One theory about the death of the universe is called the…
Answer:
10. Which scientist proposed the 3 planetary motion laws?
Answer:
11. What is the shape of a planet’s orbit?
Answer:
12. Hubble’s law says that a galaxy’s speed is proportional to..
Answer:
13. What force keeps the planets in orbit and who proposed this?
Answer:
14. Greater red shifts or blue shifts indicate ___________
Answer:
15. What causes the seasons?
Answer:
16. What is the Doppler effect?
Answer:
17. What are the 7 forms of EMR?
Answer:
18. What color on the visible light spectrum is most energetic?
Answer:
19. What does a star’s spectrum tell the observer about the star?
Answer:
20. What type of spectrum is produced by a typical incandescent light bulb?
Answer:
21. Who developed a geocentric model of the solar system that explained what retrograde motion is?
Answer:
22. What is retrograde motion?
Answer:
23. Who discovered Jupiter’s 4 largest moons with a telescope?
Answer:
24. Harmonic law relates a planet’s distance to the sun with _______.
Answer:
25. What is the visible layer of the sun?
Answer:
26. What are the two layers of the sun’s atmosphere?
Answer:
27. What are granules?
Answer:
28. What are solar flares?
Answer:
29. By studying sunspots, scientists have determine that the sun _______.
Answer:
30. What happens to gravity if mass increases? Distance increases?
Answers: