By Evan Nguyen Mountains.

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Presentation transcript:

By Evan Nguyen Mountains

Definition of Mountain A large natural elevation of the earth's surface rising abruptly from the surrounding level; a large steep hill. 5 types of mountains: 1. Fold Mountains (Folded Mountains) 2. Fault-block Mountains (Block Mountains) 3. Dome Mountains 4. Volcanic Mountains 5. Plateau Mountains

1st type of mountains Fold Mountains are formed by the buckling of the earth's crust.

2nd Mountain Type Fault-block mountains is a mountain formed by the combined processes of lifting, faulting, and tilting.

3rd Mountain Type Dome Mountains are the result of a great amount of melted rock pushing its way up under the earth.

4th Mountain type Volcanic Mountains is an opening in the earth's crust through which molten lava, ash, and gases.

5th Mountain type Plateau is an elevated, comparatively level expanse of land; a tableland.

How a Mountain formed? A mountain is formed either by convergent or divergent. Convergent means that the continental plates collide together to form mountains. An example is the Himalayan Mountains. Divergent means that the continental plates move apart which makes lava push up to form a mountain. Such as Mt. Saint Helen.

Erosion Mountains erode continuously. Erosion may be by water (rain or rivers), ice (glaciers) or wind.

Deposit Mountains can deposit rocks, minerals and other sediments.

Constructive and Destructive Forces Constructive forces affect the mountains by making it taller. Destructive forces can make the mountain smaller.

Mt. Saint Helens Mt. Saint Helens was formed by a volcanic chain.

Himalayan Mountain The Himalayas formed through million of years of earthquakes and the movement of the earth.

How does time affect landforms Deposition and erosion can wear down a mountain range and make it smaller.

Facts and Information Mountains usually have steep, sloping sides and sharp or slightly rounded ridges and peaks. A group of mountain ranges is called a mountain system. More than half of the world’s fresh water originates in mountains, and all the world's major rivers are fed from mountain sources.