Across
- 8. process by which water on the surface of the Earth enters and moves through the soil and porous rock layers
- 10. process by which water vapor (gas) in the air cools and changes into liquid water
- 11. found in the oceans, which cover about 71% of the planet's surface
- 12. periodic rise and fall of sea levels caused by the gravitational forces exerted by the moon and sun on Earth's oceans
- 14. rhythmic movements of water that travel across the surface of the ocean
- 15. the angle at which Earth's axis is tilted relative to its orbit around the Sun
- 16. small icy body that orbits the Sun in an elongated, elliptical orbit
- 17. concentration of dissolved salts, primarily sodium chloride (NaCl), in water
- 18. leading explanation, for the origin and formation of the universe
- 20. Streaks of light produced by a meteoroid as it enters the Earth’s atmosphere
- 23. led to the discovery that the Earth is NOT the center of the solar system
- 24. a small rocky or metallic body that travels through space.
Down
- 1. phase of the moon in its lunar cycle when it is positioned between the Earth and the Sun
- 2. the Earth is in the center of the solar system
- 3. sun heats the surface of bodies of water (like oceans, lakes, and rivers), causing the water molecules to move faster and eventually break free from the liquid state
- 4. the Sun is the center of the solar system
- 5. path around the Earth
- 6. water that is stored beneath the Earth's surface in the spaces between soil particles, rocks, and other underground materials
- 7. Moon passes directly between the Earth and the Sun
- 9. measure of the amount of matter in an object and is constant regardless of location
- 13. shortest day and the longest night of the year
- 19. causes objects to be attracted towards one another
- 21. Application of scientific knowledge, tools and techniques to solve problems, create products or improve processes
- 22. meteoroid that makes it through the Earth’s atmosphere and lands on the surface