Unit 3: Earth's Changing Landscape Vocabulary
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6th Grade
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Scarlett Scoville
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Unit 3: Earth's Changing Landscape Vocabulary
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Core
The innermost area of Earth's interior.
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Crust
The thin outermost layer of the Earth.
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Lithosphere
The rigid upper portion of the Earth that is broken into plates. It includes the crust and the uppermost portion of the mantle.
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Magma
Molten rock found beneath Earth's surface.
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Mantle
The layer of the Earth between the outer crust and inner core.
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Theory
A logically consistent explanation of some aspect of the natural world that is supported by a large body of science.
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lava
molten rock found on top of the Earth's surface
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active volcano
a volcano that is currently erupting, showing signs that it is likely to erupt in the near future, or has erupted in recorded history
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dormant volcano
a volcano that has not erupted for at least 10,000 years, but that scientists think may erupt again
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extinct volcano
a volcano that scientists do not expect to erupt ever again
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plates
a large section of the Earth's surface
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plate tectonics
the theory that the rigid outer portion of the Earth is broken into large separate sections, called tectonic plates, each moving at a specific speed in a specific direction
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transform boundary
a boundary between tectonic plates that are sliding next to each other
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convection current
a flow of material (such as magma in the Earth's mantle) caused by a difference in temperature
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Richter Scale
a scale used to quantitatively rate the magnitude of an earthquake
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seismogram
the information recorded by a seismograph, which collects data on the strength of an earthquake
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subduction zone
an area where one tectonice plate is being forced downward toward the Earth's interior
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Pangea
a single landmass, or supercontinent, that existed from about 350 million to 200 million years ago and was seperated by plate tectonics, forming the current continents
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continental drift
a theory that the continents were attached together in the past, and have been drifiting apart ever since
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paleontologist
a scientist who uses fossil evidence to study life in prehistoric times
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convergent boundary
a boundary between tectonic plates that are moving toward each other
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divergent boundary
a boundary between tectonic plates that are moving away from each other
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sedimentary rock
rock that has been formed by the compacting and cementation of sediment material
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metamorphic rock
rock that is created from intense heat and pressure deep inside Earth
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igneous rock
rock that is created from the cooling of molten rock (lava)
Unit 3: Earth's Changing Landscape Vocabulary
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