A theory that continents can drift apart from one another and have done so in the past.

An extremely large landmass when all continents were connected together

The imprint or hardened remains of a plant or animal that lived long ago.

A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle.

Giant undersea mountain range extending around the world like the seams of a baseball.

A system that uses the reflection of underwater sound waves to detect objects.

the idea that the middle of the ocean is spreading apart, moving very slowly in opposite directions.

Process in which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent boundary..

A slab of Earth's lithosphere that can move around on the planet's surface.

A well-tested concept that explains a wide range of observations about a particular scientific question.

The movement of the earth’s upper mantle and crust.

A break in Earth's lithosphere where one block of rock moves toward, away from, or past another.

Two plates sliding horizontally past each other.

Place where two of Earth's tectonic plates are moving apart

a deep valley that forms when two plates drift apart

a boundary between lithospheric plates where the plates move toward one another and one plate is recycled into the mantle

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Chap.1 Section 3-5

Chapter 1 Section 3

Question	Answer
continental drift	A theory that continents can drift apart from one another and have done so in the past.
Pangea	An extremely large landmass when all continents were connected together
fossil	The imprint or hardened remains of a plant or animal that lived long ago.
deep-ocean trench	A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle.
mid-ocean ridge	Giant undersea mountain range extending around the world like the seams of a baseball.
sonar	A system that uses the reflection of underwater sound waves to detect objects.
seafloor spreading	the idea that the middle of the ocean is spreading apart, moving very slowly in opposite directions.
subduction	Process in which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent boundary..
plate	A slab of Earth's lithosphere that can move around on the planet's surface.
scientific theory	A well-tested concept that explains a wide range of observations about a particular scientific question.
plate tectonics	The movement of the earth’s upper mantle and crust.
fault	A break in Earth's lithosphere where one block of rock moves toward, away from, or past another.
transform boundary	Two plates sliding horizontally past each other.
divergent boundary	Place where two of Earth's tectonic plates are moving apart
rift valley	a deep valley that forms when two plates drift apart
convergent boundary	a boundary between lithospheric plates where the plates move toward one another and one plate is recycled into the mantle

Created by: wintereli11

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