Name: __________________________
Date_________________________
Astronomy Test One Study Guide
1.
How would you compare the gravity between Mars and Jupiter? Mars is closer to sun but it has a smaller mass.
Jupiter has a larger mass but it has a farther from the sun.
2.
If the distance between Mercury and the Sun increased, what would happen to the gravitational pull between
the two objects? Circle on (Increase or Decrease the gravitational pull)
3. How did gravity help with the formation of the planets and stars? It is responsible for bringing all the dust
together to form the planets
4. Would your mass be different on Jupiter than it is on Earth? (Explain) No, our mass stays the same.
5. Which properties cause objects to have a gravitational force? _________________mass_________________ and
_____________distance________________________
6. When you drop different size objects, which one falls faster and hits the ground, or do they both hit at the same
time? They will fall at the same rate because the gravitational pull is equal.
7. Matching:
__B____Meteor
__D____Asteroid
___C___Meteorite
___A___Comet
__E____Meteoroid
A. Made of ice and forms far from the sun
B. Burns in Earth’s atmosphere because of friction between object and atmosphere
C. A space rock which has landed on the surface of the earth
D. A metallic rock that is located in the belt between Mars and Jupiter
E. Many are formed from pieces of comet
8. Place in correct size order (planet, galaxy, universe, asteroid, meteor, and solar system) Universe, Galaxy, Solar
System, Planet, Asteroid, Meteor
9. What is a collection of billions of stars, planets, and dust in an elliptical, spiral, or irregular shape? galaxy
10. How were the planets in our solar system formed? The Nebula Theory = gas and dust spin and them collapse to
form the planets and the stars.
11. How old is our universe? 14 billion years
12. Our exact location in space is in ____Orion____ Arm of the ____Milky Way_______ Galaxy.
13. A comet is often called a dirty snowball.
14. A large cloud of dust and gas in space is called a nebula.
15. What type of galaxy do we live in? Spiral
16. Which galaxy is the oldest and has very little gas and dust? Ellipitical
17. How are galaxies classified? Shape
18. List two facts on the spiral galaxy:
19. Why does a meteor glow? Friction between the object and the atmosphere
20. Why is gravity important to the solar system? It keeps the planets and stars in orbit
21. What is the Big Bang theory? The universe began and proposes that, theoretically, all matter was
condensed into a singularity smaller than the head of a pin and was hotter and denser than we can
imagine.
22. Describe the Nebula theory. Solar systems are formed by dust clouds slowly coming together, spinning,
condensing, flattening and finally forming stars and planets.
23. Draw the three types of galaxies and label each galaxy:
Spiral, Elliptical, Irregular
24. Draw a comet approaching the sun: Tail points away from sun
25. Draw the three stages of a meteor: Meteoroid, Meteor, Meteorite
26. What is the main difference between an comets, meteors and asteroids?
Comets
Meteors
Made of ice and dust
3 stages: Meteoroid, Meteor,
Tail points away from sun
Meteorite
Gas and dust tail
Made from leftover comets
Asteroids
Found between mars and Jupiter
A metallic rock