Difference between revisions of "AY Honors/Geology/Answer Key"
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==1. Give the geological meaning of the following words:== | ==1. Give the geological meaning of the following words:== | ||
| + | <gallery> | ||
| + | Image:Nile River and delta from orbit.jpg|Satellite image of the Nile '''River Delta''' | ||
| + | Image:Baltic spits.png|The three narrow strips of land shown here are '''spits''' in the Baltic Sea | ||
| + | Image:DeadSeaSinkhole.jpg|'''Sinkholes''' near the Dead Sea | ||
| + | Image:Oxbow lake.jpg|Map of an '''oxbow''' lake | ||
| + | </gallery> | ||
;a. Delta: A delta is a landform where the mouth of a river flows into an ocean, sea, desert, estuary or lake. | ;a. Delta: A delta is a landform where the mouth of a river flows into an ocean, sea, desert, estuary or lake. | ||
;b. Sand spit: A spit a deposition landform found off coasts. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at a cove, bay, ria, or river mouth. Spits are formed by the movement of sediment (typically sand) along a shore | ;b. Sand spit: A spit a deposition landform found off coasts. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at a cove, bay, ria, or river mouth. Spits are formed by the movement of sediment (typically sand) along a shore | ||
| − | ;c. Sinkhole: | + | ;c. Sinkhole: A sinkhole is a natural depression or hole in the surface topography caused by the removal of soil or bedrock, often both, by water. Sinkholes may vary in size from less than a meter to several hundred meters in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. They may be formed gradually or suddenly, and are found worldwide. |
| − | ;d. Oxbow lake: | + | ;d. Oxbow lake:n oxbow lake is a type of lake which is formed when a wide meander from a stream or a river is cut off to form a lake. They are called oxbow lakes due to the distinctive curved shape that results from this process. In Australia, an oxbow lake is called a billabong. |
| + | |||
;e. Moraine: | ;e. Moraine: | ||
;f. Cirque: | ;f. Cirque: | ||
Revision as of 01:02, 22 April 2007
1. Give the geological meaning of the following words:
Satellite image of the Nile River Delta
The three narrow strips of land shown here are spits in the Baltic Sea
Sinkholes near the Dead Sea
Map of an oxbow lake
- a. Delta
- A delta is a landform where the mouth of a river flows into an ocean, sea, desert, estuary or lake.
- b. Sand spit
- A spit a deposition landform found off coasts. A spit is a type of bar or beach that develops where a re-entrant occurs, such as at a cove, bay, ria, or river mouth. Spits are formed by the movement of sediment (typically sand) along a shore
- c. Sinkhole
- A sinkhole is a natural depression or hole in the surface topography caused by the removal of soil or bedrock, often both, by water. Sinkholes may vary in size from less than a meter to several hundred meters in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. They may be formed gradually or suddenly, and are found worldwide.
- d. Oxbow lake
- n oxbow lake is a type of lake which is formed when a wide meander from a stream or a river is cut off to form a lake. They are called oxbow lakes due to the distinctive curved shape that results from this process. In Australia, an oxbow lake is called a billabong.
- e. Moraine
- f. Cirque
- g. Mesa
- h. Alluvial fan
- i. Anticline
- j. Syncline
