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Glaciers,waves,caves

Earth Science

QuestionAnswer
Glacier a large mass of moving ice and snow.  Forms where there are many large snowfalls and the temp remains very cold.
Two kinds of glaciers are... Valley (alpine) and continental
Glacial ice erodes by abrasion and by plucking away at the rock beneath it. One of the most powerful agents of erosion.
Till rocks and soil deposited directly by a glacier
Moraines formed when a glacier melts and retreats leaving a ridge of till
Lateral moraine till deposited along the sides of a glacier
Terminal moraine till deposited at the front end of a glacier
Drumlins an oval-shaped mound of till.  Its tip points in the direction the glacier was moving.
Melt water streams formed by melting ice
Outwash plains sediments deposited by rivers of melt water; fan-shaped; usually in front of terminal moraines, fertile land
Iceberg deposits when parts of the glaciers break off and drift into the sea
Glacial lakes when the holes left by glaciers fill with water.  Examples:  The Great Lakes
Kettle lakes when a huge block of glacial ice is left behind and melts to form a deep round hole that fills with the water from melting
Sea cliffs a steep face of rock
Terrace when a sea cliff erodes and a buildup of rocks and sand form a flat platform
Sea stack a column of resistant rock left standing
Sea cave when wave action erodes rock and forms a cave
Shape of the shoreline often results from changes in the sea level.  If it suddenly drops then there will be many sea cliffs and terraces; if it rises then there will be many bays and harbors
Cavern used to describe a very large cave
Speleology used to describe a very large cave
Spelunking the hobby of exploring caves
Caves and sinkholes are formed by... the dissolving action of running water mixed with carbonic acid in rocks such as limestone, gypsum, and travertine
Speleothems mineral formations and deposits in caves
Stalactites (hold title to the ceiling) icicle like, from the ceiling down, calcite deposits
Stalagmites calcite deposits, built up pillars from the floor
Column Formed when stalactites and stalagmites join, stabilize the cave ceiling
Permanent cave dwellers include... fish, salamanders, crayfish, insects, spiders, and bats
Animals that live there permanently are usually... Partially or completely blind, pale, and have a keen sense of touch and smell
Created by: elarocco
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