Dynamic Earth

2. a type of map characterized by large-scale detail and quantitative representation of relief, usually using contour lines, but historically using a variety of methods.
5. analysis using the fact that physical quantities added to or equated with each other must be expressed in terms of the same fundamental quantities (such as mass, length, or time) for inferences to be made about the relations between them.
7. This is made up rock that is fluid and can move. It is this fluidity that powers the movement of the tectonic plates of the Earth's crust.
10. a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading. An example is the Mid-Atlantic Ridge.
11. In geology, a place where sections of the crust of the Earth move relative to each other.
14. a fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle.
15. fault A geologic fault in which the hanging wall has moved downward relative to the footwall.

1. fault where two blocks of rock are forced together by compression.
3. a current in a fluid that results from convection.
4. Earth's outer layer, the crust, is divided into a set of large moving plates. The lines where they meet are called
6. a record produced by a seismograph.
8. wave a longitudinal earthquake wave that travels through the interior of the earth and is usually the first conspicuous wave to be recorded by a seismograph. Expand. Also called primary wave
9. boundaries A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates.
12. wave or shear wave, is a seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.
13. boundaries are places where plates slide sideways past each other