Science 9
Astronomy Questions

1. Modern science concentrates its investigations in what two opposite areas of our vision world?

2. What two devices are used to investigate these areas of our vision worlds?

3. Which of these devices was used by: a) Galileo? b) van Leeuwenhoek?

4. What is another name for the heavenly bodies?

5. Over thousands of years, the locations of the heavenly bodies have helped humans in what ways?

6. a) Astronomical observatories have been around for only the last two hundred years. T, F.
b) The remnants of ancient observatories can be found only in Britain. T, F.

7. What practice was the beginning of astronomy?

8. The heavenly bodies parade in what direction across the day and night sky?

9. For thousands of years, what body was thought to be the center of the solar system?

10. a) What was thought to be the basic structure of the heavens?
b) Stars, whose positions appeared not to change, were located where in this heavenly structure?

11. a) The Earth-centered model of the universe was developed by whom?
b) This hypothesis lasted for how long?

12. a) Who developed the Sun-centered model of the universe?
b) When?

13. What is the heart of the Solar System?

14. Huge arcs of gas sent up from the Sun's surface are called what?

15. Cooler areas on the Sun's surface are called what?

16. a) The solar wind is created from energy released by what?
b) What are some of the solar wind's negative effects when it reaches Earth?

17. What is similar about the basic structure of all the Inner Planets?

18. What is a basic similarity in the structure of the Outer Planets?

19. a) How does the orbital period of planets change as their distance from the Sun increases?
b) How does their temperature change?

20. a) What planet is closest to the Sun?
b) Which one is most distant?

21. Which set of planets, Inner or Outer, are generally the largest?

22. a) Asteroids are made of what?
b) Why might asteroids be a potential hazard?

23. a) Comets contain what matter?
b) What does the Sun's heat do to comets?

24. Define: a) meteor.
b) meteorite.

25. The Solar System is thought to have started as what matter?

26. What is the problem with trying to understand infinity?

27. What seems to be happening to the size of the universe?