Term
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Definition
| The study of the natural process that formed the earth. |
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Term
| Theory of Plate Tectonics |
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Definition
Theory that all of the land masses were together at one time and have been pushed apart through the act of magma splitting apart the continents and pushing them apart.
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Term
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Definition
Plates moving apart from one another.
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Term
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Definition
Usually plates move past each other
Can create earthquakes
Can move up and down |
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Term
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Definition
Direct collision of plates
Involves Subduction Zone |
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Term
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Definition
Plates upon which oceans cover.
More dense than continental plates.
Subducts UNDER continental plates. |
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Term
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Definition
| One plate has pushed the other up through subduction. |
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Term
| Ways Mountains Are formed |
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Definition
Uplift
Volcanoes
Folding
Faulting |
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Term
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Definition
| Sediment that was folded and then uplifted to form part of NE WA. |
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Term
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Definition
| Landmass on continental plate "slammed" into Washington-became N Central WA. |
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Term
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Definition
| Actually, a chain of islands that slowly were incorporated into the North American Plate through subduction. Located in SE Wa. |
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Term
| The North Cascades Sub-Continent |
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Definition
| Similar to Blue Mountains in that it is a chain of islands. Does not form all of the Cascades. Located in NW WA. |
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Term
| Olympic Peninsula/Willipa Hills |
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Definition
Created by uplift of ocean floor when subduction zone shifted further west.
Southern portion was folded over millions of years into Willipa Hills.
Did NOT create Olympic Mountains. |
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Term
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Definition
Formed by subduction of Pacific Plate
Create volcanoes and mountain range
Run North to South (to California!)
Divide Wa into West and East |
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Term
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Definition
Most of SE and Central WA
Formed by magma oozing during the formation of Cascades
Some folding causing Rattlesnake, Horse Heaven and Frenchman hills |
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Term
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Definition
Mountains on the Olympic Peninsula caused by uplift
Not volcanic |
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Term
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Definition
North to South
Mount Baker
Glacier Peak
Mount Rainier
Mount St. Helens
Mount Adams |
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Definition
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Definition
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Definition
Covered Central and NE WA
Formed dam in Columbia
Formed Glacial Lake Columbia
Created Grand Coulee
Created Dry Falls |
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Term
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Definition
Was in ID an MT
Created Glacial Lake Missoula
Dam broke and water joined with Glacial Lake Columbia
Formed Channeled Scablands
Occurred almost 100 times during Ice Age |
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Term
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Definition
Created Puget Low lands by scouring out Puget Sound
Created many inland lakes when it melted |
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Term
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Definition
Last one about 10,000 years ago
Happens after climate warms which then forces cooling because of ocean currents stopping. |
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Term
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Definition
Most active
Blew May 18, 1980 |
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Term
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Definition
| Point in plate collision where energy is released |
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Term
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Definition
Measures energy released in earthquake
Scale of 1-10
Intensity increases 10X per movement up the scale |
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Definition
Major earthquake in WA history
300 years ago
8-9 on Richter Scale
Created tsunami |
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Term
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Definition
| Massive ocean wave as a result of earthquake. |
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Term
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Definition
2001
Epicenter near Olympia (Capital)
Mrs. Cruden remembers this one! |
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