Many fossil remains found in the North Cascades resemble those of a similar age are found in this part of the world.
What is southeast Asia?
100
This is the name of a prehistoric waterfall located half way down the Grand Coulee.
What is Dry Falls?
100
Mt. St. Helens is located in this region.
What is the Cascade Mountain Region?
100
Fractures in the earth's crust. A shift here could cause an earthquake.
What is a fault line.
200
This type of rock is cooled lava.
What is igneous rock?
200
These are huge boulders which were carried by glaciers.
What are erratics?
200
These are large waterfalls.
What are cataracts?
200
Mt. St. Helens erupted on this date.
What is May 18, 1980?
200
These cause cracks and folds in the earth's crust.
What are tectonic forces?
300
This is the name for the string of volcanoes that surrounds the Pacific Ocean. These volcanoes are found in Indonesia, the Philippines, Japan, Alaska, and the west coast of North and South America.
What is the ring of fire?
300
This is the name for a dry streambed or a small, shallow ravine.
What is a coulee?
300
The name for a very heavy rain. Starting about 15000 years ago this swelled the Columbia river to contain 10 times the flow of all the rivers in the world.
What is a deluge?
300
This is the name for the mud flows and debris that filled the rivers after the eruption.
What are lahars?
300
These cause land masses to move.
What are tectonic forces?
400
This is considered Washington's most dangerous volcano.
What is Mt. Rainier?
400
This is the name for a layer of rock below ground which holds water. The city of Spokane gets its water from one of these created during the the last ice.
What is an aquifer?
400
This is one result of the Great Flood that is visible today.
What is the shape of the Puget Sound Lowlands, aquifers, a sculpted Columbia Plateau where once it was flatter, Grand Coulee, Dry Falls, cataracts.
400
One of the deadly consequences of the eruption of Mt. St. Helens.
What is 57 people lost their lives. 84 year old, Harry Truman, refused to leave the resort he'd run since 1926, the first to die was geologist, David Johnson?
400
The Columbia Plateau was created by repeated lava flows which came from these cracks in the earth's crust.
What are fissures?
500
These are the five "sleeping giants" or major inactive volcanoes in Washington.
What are Mt. Baker, Glacier Peak, Mt. Rainier, Mt. St. Helens, and Mt. Adams?
500
This is Washington state's official fossil.
What is the Columbia Mammoth?
500
The great floods are often called this for the geologist who proved that the floods existed.
What is the Bretz Floods.
500
Two effects of the eruption of Mt. St. Helens on the environment.
What is loss of animals and plants, destruction of forest land, filling in of Spirit Lake with trees and debris, loss of animal habitat, loss of topsoil, ash-filled air?
500
This is the term which describes movement of large landmasses about 200 million years ago. Because of this, scientists belive that the North Cascades was once a separate continent joined to Asia.