Help in landform facts???

Question

hello guys, i need your urgent help...

i need to find some interesting facts about these landforms...]

the include:

1. delta(formed at the mouth of a river)

2. gorge

3. meanders

4. waterfall

5. flood plain

6. valleys

pls guys help me out urgently, i really need some facts about these, if u cant give all, some would also be fine. thx alot for reading

Answer 1

1. Deltas

- decrease in energy causes the river to drop its sediment load

- finer grained the farther out into the lake or ocean - heavyier sediment dropped first near the mouth and lighter carried out further

- multiple streams known as distributaries form

- Arcuate (fan-shaped) delta - Nile R (Africa)

- Bird-foot (shaped like a bird foot) delta - Mississippi R (US)

- Cuspate (tooth-shaped) delta - Tiber R (Italy)

- Estuarine delta - Seine R (France)

http://www.loyno.edu/lucec/mrddelta.html

http://en.wikipedia.org/wiki/River_delta

2. Gorge

- Gorge comes from the Spanish, Canyon comes from the French - both refer to the same thing

- deep cut erosion generally into a plateau

- done over a very long period of time

- climate and weather as well as erosion

- river makes the gorges cut into the weaker rock

Waterfalls slowly erode the rock - ravines formed

http://library.thinkquest.org/C005280/ge...

http://www.bobspixels.com/kaibab.org/geo...

3. Meanders

- Loop-shaped curve in a river flowing sinuously across flat country

- common where the gradient is gentle

- the discharge fairly steady

- the discharge fairly steady

- lots of large bends - slow moving winding river

- Mississippi meanders

- " Sinuous shaped stream channel. Usually found in streams flowing over a very shallow elevation grade"

http://www.physicalgeography.net/physgeo...

4. Waterfall

(1) A location in the long profile of a stream where water flows vertically. A nickpoint.

(2) Verical drop in elevation that causes a stream's dischange to flow vertically.

http://www.physicalgeography.net/physgeo...

5. Flood Plain

Relatively flat area found alongside the stream channel that is prone to flooding and receives alluvium deposits from these inundation events.

http://www.physicalgeography.net/physgeo...

6. Valleys

A linear depression in the landscape that slopes down to a stream, lake or the ocean. Formed by water and/or ice erosion.

http://www.physicalgeography.net/physgeo...