Across
- 6. having or relating to the sun as center
- 7. a ball of ice and dust who orbits around the sun in a long, narrow ellipse, large object which orbits a star
- 12. - is a scientific activity the aim of which is to make a particular part or feature of the world easier to understand, define, quantify, visualize, or simulate
- 13. - the galaxy to which Earth and other components of our Solar System belong
- 14. a chunk of rock or dust in space that comes from comets or asteroids
- 16. a theory that says that the universe will stop expanding outward, reverse direction, and pull back on itself to the single point
Down
- 1. the streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere
- 2. objects revolving around the sun that are too small and too numerous to be considered planets
- 3. having or relating to the earth as center
- 4. THEORY about the creation of the UNIVERSE
- 5. the movement of one object around another, Earth around the sun, year; 365 1/4 days
- 8. when a meteoroid burns in the atmosphere and hits the ground
- 9. the amount of matter in an object
- 10. the measure of the force of gravity on an object
- 11. the force that pulls an apple to the ground, pulls the moon toward Earth, keeps the planets in orbit and attract objects towards each other
- 15. the spinning of the Earth on its axis, day and night (24 hours)