Earth Crossword

3. an imaginary line that circles the Earth halfway between the North and South Poles.
4. the action of rotating around an axis or center.
7. the outermost layer of the Earth made of rock
8. the slow change in the direction of Earth's rotational axis
9. velocity the minimum speed an object needs to be traveling to completely escape Earth's gravitational pull and move into space
12. the thickest layer of the planet
14. the rigid outer part of the earth, consisting of the crust and upper mantle.
15. metal

1. When planets begin to melt, the materials in them begin to separate from one another
2. the angular distance of a place east or west of the meridian at Greenwich, England, or west of the standard meridian of a celestial object, usually expressed in degrees and minutes.
5. the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.
6. the denser crustal layer of Earth that makes up portions of tectonic plates in deep oceans
10. a weak, ductile layer of Earth's mantle that lies below the lithosphere
11. the angular distance of a place north or south of the earth's equator, or of a celestial object north or south of the celestial equator, usually expressed in degrees and minutes.
12. The Mohorovicic Discontinuity
13. move or cause to move into a sloping position.