Forces_of_change_internal_external_pics

Internal and External Factors of Change

Sand Storms Sandstorms, which occur in arid and semiarid areas, causes a high amount of wind lifts the top layer of sand from the ground, and push it in various directions.

Acid Rain \"Acid rain\" is a broad term used to describe several ways that acids fall out of the atmosphere in the form of precipitation, fog, snow, etc.

Earthquake An earthquake is a sudden, rapid shaking of the earth’s surfaces.

Wind Erosion Wind erosion is the physical wearing away of the Earth’s surface by wind.

Volcanoes A volcano is a mountainous vent in the Earth’s crust

Geyser A geyser is a vent in Earth's surface that periodically ejects a column of hot water and steam.

Canyon A canyon is a deep valley with very steep sides, often carved from the Earth by a river.

Tsunamis Tsunamis are huge waves caused by underwater eruptions or earthquakes.

Glaciers Glaciers are made up of fallen snow that, over many years, compresses into large, thickened ice masses that move.

Continents Large landmasses that make up most of the Earth’s surface

Islands An island a piece of land that is completely surrounded by water.

Mountains Mountains are landforms that can be found on land or in the oceans that are created by tremendous forces of the earth with a steep top usually shaped up to a peak or ridge.

Discussion Questions • What internal forces operate to affect the Earth’s surface? • What external forces affect Earth’s surface?