Mineral Creek Waterfall -Horsetail cascade-Valdez, Alaska, USA

Marcy Fell

Geography

Period 3

Ms. Hornchen

Definition:

The steep fall of water from a height cascading over hard rock onto eroded land below

Angel Falls-Plunge-

Southeastern Venezuela, South

America

A waterfall is formed when the water flows over a hard layer of rock that has a soft layer of rock underneath it. When the water reaches the soft rock, it begins to erode away the soft rock at a faster rate than the hard rock, and begins to cut vertically down into the rock. This makes a cliff over which the water will fall, creating a waterfall. The waterfall will then erode away the land where it falls to create a plunge pool.

Block – Water falls from a wide stream or river Cascade - Water falls down a series of rock “steps” Cataract - A very large waterfall Fan - Water spreads out horizontally as it falls while remaining

in contact with bedrock Horsetail - The falling water maintains some contact with

bedrock Plunge - Water falls vertically and loses contact with bedrock Punchbowl - Water descends in a constricted form, then

spreads out into a wider pool Segmented - Distinctly separate flows of water form as it

descends. Tiered - Water falls in a series of distinct steps or separate

falls

Topographic Map of Victoria Falls

Victoria Falls-segmented Cataract-Border of Zambia and

Zimbabwe, Africa

Victoria FallsSatellite Image

Shephard, Jim, comp. "Mineral Creek." Valdez, Alaska. 2005. Valdez Convention and Visitors Bureau. 24 Jan. 2006 http://www.valdezalaska.org/maps/mineralCreek.html>.

"Victoria Falls and the Zambezi River." World Guide. NASA Earth Observatory. 24 Jan. 2006 <http://www.gesource.ac.uk/worldguide/html/image_1948.html>.

"Angel Falls." Natural Wonders of the World. Lost World Adventures. 25 Jan. 2006 <http://ce.eng.usf.edu/pharos/wonders/Natural/angelfalls.html>.

Wagh, David. Geography: An Integrated Approach. 2ndnd ed. Thomas Nelson and Sons Ltd., 1995. 70.