Across
- 2. "Small" Chunks of rock and ice that have an orbital path and consist of rock and ice. Has two parts: Head and Tail.
- 7. The Second part of a comet. Leaves a trail of gas and dust.
- 8. "Small” rock, found in the Asteroid Belt. Can range from 6 ft. to 600 miles across.
- 11. Gas Giants. (Outer Planets)
- 14. Planets move in the same direction around the Sun
- 15. Solar System Formed 4.6 Billion Years ago. The Most accepted theory is the Nebular Theory
- 17. Most accepted theory on the formation of the solar system
- 19. Step 2 of the Nebular Theory, The Disk began to spin in one direction
- 22. Rocky and with thin Atmospheres. Closer to the sun. (Inner Planets)
- 23. A large cloud of dust and gas
- 25. Step 3 of the Nebular Theory: The Formation of the sun, caused by the friction and speed of the disk
- 26. Step 4 of the Nebular Theory: Small particles colliding and attaching to each other creating celestial bodies.
- 27. The first step in the Nebular Theory. A nebula fell in on itself and formed a disk
- 28. Named after the objects that make it up, can be found between Mars and Jupiter
Down
- 1. Small particles that collide and get bigger and continue to collect more particles until it creates a planet
- 3. A Meteoroid that passed through that atmosphere and hit the earth. (Hint: Dinosaurs))
- 4. Moon Theory: The Moon floated in space until Earth's Gravity captured it.
- 5. All planets orbit the sun in the same area.
- 6. Small piece of Rock that Enters Earths Atmosphere
- 9. A Moon Theory: A piece of molten Earth came off and was caught in the Earth's Gravity and hardened to become the Moon.
- 10. A Meteoroid that burns up in the atmosphere caused by friction and air particles.
- 12. Moon Theory: Earth was struck by mars sized object. Mantle flew off and started orbiting Earth
- 13. The Front part of a comet.
- 16. The outer layer of the head of a comet
- 18. Formed 10 Billion years ago (Our Galaxy)
- 20. Created the Universe 13.8 Billion Years Ago
- 21. Orbits a planet
- 24. A part of the head of a comet. The inside layer.