Download Exploration of the Universe

Exploration of the Universe
1. What astronomical observations allow us to know the time of day, the date, direction and the
timing of ocean tides?
2. What is the difference between an asterism and a constellation?
3. How would observations of stars differ from the observations of planets?
4. What is retrograde motion?
5. What is the difference between the geocentric model of the solar system and the heliocentric
model? Who first proposed the heliocentric model? Who discovered that planets orbit the Sun
in ellipses?
6. Describe two features of the Sun.
7. Define asteroids, comets, meteors and meteorites.
8. Name three types of electromagnetic radiation.
9. What two factors affect the brightness of a star?
10. What do astronomers observe to determine the temperature of a star?
11. What do astronomers observe to determine the composition of a star?
12. Define nebula, red dwarf, white dwarf, black dwarf, supernova, neutron star and black hole.
13. How long does fusion occur in a low mass star, medium mass star and a large mass star?
I will give you a table with all of the planetary data. You are responsible for all questions associated
with this activity.
You are responsible for the Retrograde Motion Activity. You are responsible for the Spectral Activity
on p. 465.
Study the diagrams on p. 467, p.468 and p. 469. I will probably give you partially unlabelled versions
of these diagrams and ask you to label the blanks.