Gravity and Space Rocks Review

First AND Last Name

1. Which answer choice is the best definition of weight?

• A. a force which tries to pull two objects towards each other
• B. how strongly your body is being pulled down towards Earth
• C. an object's resistance to change in motion
• D. the amount of matter in an object

2. Where do meteoroids come from?

• A. Meteors
• B. Meteorites and Asteroids
• C. Asteroids and Comets
• D. Meteors and Comets

3. Why do the planets in our solar system orbit the sun?

• A. Because the sun is the brightest star.
• B. Because the planets and the sun are all spheres.
• C. Because the sun is tied to the other planets with a long string.
• D. Because the sun is the most massive object in the solar system

4. Where is the asteroid belt located?

• A. Right by the sun
• B. Near Earth
• C. Past Neptune
• D. Between Mars and Jupiter

5. What 2 elements are asteroids, meteoroids, meteors, and meteorites mostly made of?

• A. Gold and silver
• B. Iron and nickel
• C. Copper and aluminum
• D. Titanium and cobalt

6. A _______ has two tails: one made of ice and one made of dust.

• A. Asteroid
• B. Comet
• C. Meteor

7. Scientists believe that asteroids are left over remains of _________.

• A. Planets
• B. Shooting stars
• C. Moons
• D. Comets

8. Inertia is an object's resistance to change in motion. What does this mean?

• A. If an object is moving, it will continue moving until something makes it stop.
• B. An object in motion will stop whenever it wants.
• C.If an object is at rest, it will continue moving until something makes it stop.
• D. If an object is moving, it will remain at rest unless something makes it move.

9. Which layer of the atmosphere do meteors burn up in?

• A. Exosphere
• B. Stratosphere
• C. Troposphere
• D. Mesosphere