Across
- 2. a measure of gravity exerted on an object
- 4. a natural satellite that orbits a planet
- 5. a rocky object that orbits the Sun; composed of the metals nickel and iron; much
- 6. nearness in space, time, or relationship
- 9. the star that the Earth and other planets in the solar system orbit
- 10. a large, rock-shaped object in space that orbits the Sun – smaller than a planet
- 12. a meteor that hits or lands on Earth’s surface; very small, cause little damage, and usually only weigh a few pounds
- 16. the force that pulls all objects with mass toward one another
- 17. a sphere-shaped object in space that orbits a star
- 18. a huge burning sphere of gas fueled by nuclear fusion
- 20. are located
- 21. in size than asteroids
- 22. a rocky object that produces a streak of light in the sky as it enters Earth’s atmosphere, known as a “shooting star”
- 23. a chunk of ice and dust travelling through space
- 25. the first four planets closest to the Sun with rocky or solid surfaces – Mercury, Venus,Earth, and Mars
Down
- 1. the air that surrounds Earth
- 3. the most distant region in the solar system believed to be a giant shell of icy, cometlike objects surrounding the Sun, planets, and Kuiper Belt objects Gravity in the Solar System
- 7. the last four planets in the solar system referred to as the “gas giants” – Jupiter, Saturn, Uranus, and Neptune
- 8. a region of the solar system between the orbits of Mars and Jupiter where most
- 11. consists of a star and everything that orbits that star
- 13. the spiral shaped galaxy in which we live
- 14. the 4 largest moons of Jupiter - Io, Europa, Ganymede, and Callisto
- 15. a collection of small, icy objects located in a doughnut-shaped ring beyond the orbit of Neptune
- 19. a huge system of millions or billions of stars, together with gas and dust held together by gravity
- 24. the amount of matter in an object