Across
- 2. The force responsible for sticking particles together to form accretion disks and eventually the sun and planets
- 3. The shape of planets due to gravity acting evenly in all directions around the center of mass
- 5. The largest planets are made of _____.
- 12. This may cause the model of the solar system to be changed or adapted.
- 13. Objects will be more affected by gravity when they are _____ together.
- 15. are held in their orbit around a star because of their large sizes as well as the force of gravity
- 16. the location of our solar system in the Milky Way galaxy
- 17. In order for a space shuttle to leave Earth, it must produce a great amount of thrust. Its rocket boosters create this thrusting force by burning great amounts of fuel. However, once in space, the shuttle needs very little fuel. It circles Earth while gravity pulls it toward Earth. What term describes the motion of the shuttle around Earth?
- 18. Most gases besides those found in the sun are located in this set of planets
- 21. There are trillions of ___ in the universe.
- 23. has more stars than a single solar system
Down
- 1. If Earth’s gravity suddenly disappeared, a satellite would move in a _____ line away from Earth.
- 4. the location of the most massive objects in the solar system and in our planet
- 6. The closest outer planet to the sun
- 7. the galaxy where Earth is located
- 8. can show something much larger or smaller so that we can understand it better
- 9. What would happen to the gravity between two objects if the mass of one of the objects suddenly increased? It would ____.
- 10. Outer planets have many of these satellites
- 11. 22
- 14. an object in space that has an irregular shape, that orbits the sun in a highly elliptical orbit, and that is made of ice and rock
- 18. the path of a satellite around the celestial body that it revolves around
- 19. The sun is a _____,a self-illuminated gaseous spheroidal celestial body of great mass which produces energy by means of nuclear fusion reactions.
- 20. A student rubs an inflated balloon with wool. The student moves the balloon over bits of paper, and the balloon attracts it. This is due to electrostatic force. It is not the same as the force that caused the early formation of planets in the solar system. What force caused solar system formation.
- 22. Includes the sun and the planets, moons, asteroids, and other objects orbiting around the sun