Earth Science - Chapter 10 - The Theory of Plate Tectonics - Foret

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heated/density

Convection is the movement _ material due to differences in _ that are caused by differences in temperatures.

rift valley

The narrow valley that forms where the plates separate is a _ _.

divergent/convergent/transform

The three types of plate boundaries are _ boundaries, _ boundaries, and _ boundaries

crumble/thicken

When two plates that are made continental lithosphere collide, the colliding edges _ and _, which cause uplift that form large _ ranges.

mantle/overlying

As the _ material moves, the _ tectonic plates move along with it.

rises/away/sinks

As the hot material _, the cooler, denser material flow _ from the hot material and _ into the mantle to replace the rising material.

surface/less

Magma rises to the _ and cools to form the warm, light rock that sits higher than the surrounding sea floor because it is _ dense.

scrape/earthquakes

Plate edges at a transform boundary _ against each other in a series of sudden spurts of motions that are felt as _ earthquakes.

mountain/trenches

Plates are often bordered by major surface features, such as _ ranges or deep _ in the oceans.

identify/earthquakes

Scientists _ plate boundaries primarily by studying data from _.

middle/edges/within

Tectonic plate boundaries may in the _ of the ocean floor, around the _ of continents, or even _ continents.

blocks

The lithosphere forms the thin outer shell of Earth and is broken into several _, or tectonic plates.

volcanoes

The location of _ can also help identify the locations of plate boundaries.

convection

The movement of tectonic plates is part of the mantle _ system.

subduction zone

The region along this plate boundary is called a _ _.

water

The tectonic plates ride on the asthenosphere in much the same way that blocks of wood float on _.

collides/subducts/less

When oceanic lithosphere _ with continental lithosphere, the denser oceanic lithosphere _ subducts, or sinks under the _ dense continental lithosphere.


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