Download 1 PS 3.9 Grade 9 Review

Grade 9 Astronomy Test Review
Concepts and terms to review:
□ astronomy
□ celestial objects
□ luminosity
□ sun
□ moon
□ planet
□ star
□ asteroid
□ comet
□ gas giant
□ solar system
□ nuclear fusion
□ astronomical unit (AU)
□ light-year
□ supernova
□ nebula
□
□
□
□
□
□
□
□
□
□
□
□
□
□
black hole
constellation
rotation
revolution
orbit
satellite
moon phases
retrograde motion
atmosphere
heliocentric
geocentric
parts of the Sun
electromagnetic
spectrum (light,
infrared, UV, etc…)
meteorite
□
□
□
□
□
□
□
□
□
□
□
□
□
□
Doppler effect
solar eclipse
lunar eclipse
risks of space travel
benefits of space
travel
technology in space
types of galaxies
neutron star
big bang theory
galaxy
dwarf star
hydrogen & helium
aurora borealis
solar wind
Answer the following questions:
1. Define the term non-luminous and give an example of a non-luminous object in
our solar system.
2. Explain the difference between the terms rotation and revolution.
3. What determines the seasons and day length on Earth?
4. STATE 3 observations that ancient peoples made to discern that the Earth is not flat.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
5. How many planets are there? Name them in order. Write down a sentence that
helps you remember the order of the planets.
6. Why is the Earth the best planet to sustain living things?
7. Which planet is no longer really considered a planet? Why?
8. Label the sun and explain the importance of the core.
9. What are the two most common elements on the Sun?
_________________________ and ________________________
10. Draw and explain the difference between a lunar and solar eclipse.
11. What is nuclear fusion?
12. What is a galaxy?
13. Describe 4 galaxy shapes.
__________________________________
__________________________________
__________________________________
__________________________________
14. What is the Doppler Effect?
15. Choose one planet and name three similarities and three differences between it
and Earth.
Similarities
Differences
16. Our solar system was formed from a ______________________.
17. What is the difference between Heliocentric and Geocentric model of our solar
system?