Space and Earth Review

2. massive nucleus splits into smaller nuclei with the release of energy
5. spinning motion of a planet on its axis
6. Plate Boundary two plates move away from each other, and new crust is created between them
7. transfer of energy by electromagnetic waves
8. formed from an existing rock that is changed by heat and pressure
11. Plate Boundary two plates collide, come together, or crash into each other
13. nuclei of two smaller atoms join to form a larger atom releasing energy
15. slow motion of Earth's axis that traces out a cone over a period of 26,000 years
17. Plate Boundary two plates that are sliding past each other often forming earthquakes
19. circular movement of an object around another object; orbit
20. center of mass of two or more bodies orbiting around each other

1. description of surface features of land
3. periodic oscillation or wobbling of the Earth's axis
4. formed from broken pieces from other rocks or fossils are pressed and cemented together
9. directly above an earthquake's focus on the surface of the earth
10. formed from the cooling of molten rock at or below the surface of Earth
12. arrangement of minerals in flat or wavy parallel bands
14. transfer of energy by collisions or direct contact
16. transfer of energy by the movement of a fluid
18. Magnitude measurement of ground shaking during an earthquake