Dynamic Earth

2. –places where two tectonic plates move away from each other, forming new crust
5. –circulating currents in fluids (like magma) caused by differences in temperature and density
7. –cracks or fractures in Earth's crust along which movement has occurred
9. –the edges where two tectonic plates meet and interact
10. –a fault caused by compression where the hanging wall moves upward relative to the footwall
13. –primary seismic wave that travels fastest and moves particles in the same direction as the wave
15. –the record produced by a seismograph showing the waves of an earthquake

1. –the liquid layer of Earth's core made mostly of iron and nickel that lies above the inner core and below the mantle
3. –a fault caused by tension where the hanging wall moves downward relative to the footwall
4. –underwater mountain ranges formed by plate tectonics where new ocean floor is created
6. –secondary seismic wave that moves more slowly and shakes particles perpendicular to the direction of travel
8. –a map that shows the shape and elevation of the land surface using contour lines
11. –places where two plates slide past each other horizontally
12. –a mathematical technique used to convert one set of units to another using conversion factors
14. –the part of Earth's mantle just below the crust that is solid but can flow slowly; part of the lithosphere and asthenosphere