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Erosion and Deposition

River Systems

The Force of Moving Water

Gravity- it pulls water down a slope

Energy-The ability to do work or cause change.

Valleys- A low area of land between hills or mountains, typically with a river or stream flowing through it.

Flood plain - a nearly flat plain along the course of a stream or river that is naturally subject to flooding.

Deposits by Rivers

Erosion by rivers

When rivers deposit sediment, different landforms

are created. Some of these landforms are:

Alluvial fan - a fan shaped alluvial deposit formed by a stream where its velocity is abrupt is abruptly decreased, like at the mouth of a ravine or at the foot of a mountain.

Delta - is a landform that is created at the mouth of a river.

Soil on flood plains - is an area of land adjacent to a stream or river.

Meander- a body of water

with a meandering line.

Rivers erode the land creating

different landforms that include:

Wearing Down and Building Up

Landforms Created By Wave Erosion

Erosion - The process by which water, ice, wind, or gravity moves fragments or rock and soil.

wavecut cliff - A cliff formed along a coast by the undercutting action of waves and and currents.

Oxbow lakes- a bow-shaped bend in a river,

or the land embraced by it.

sea arch - A natural arch or natural bridge that is a geological formation where a rock arch forms with an opening underneath.

Deposition - The process of by which sediment settles out of the water or wind that is carrying it, and is deposited in a new location.

Wave erosion simulation

sea cave - A hollow area in the rock

Sediment - Small, solid particles of material from rocks or organisms which are moved by water or wind, resulting in erosion and deposition.

sea stack - A pillar of rock rising above water.

Waterfall - a cascade of falling water from a height, formed when a river or stream flows over precipice or steep incline.

When wind deposits sediment, it creates:

Deposits from Wind Erosion

The End

Presentation by

Erin Pinagayao

Lailani Landeros

Tesia Wilson

and Bazil Martinez

Loess- a buff to gray windblown deposits of fine-grained, calcareous silt or clay.

Sand dunes- a ridge of sand created by the wind.

Wind - The horizontal movement of air from an area of high pressure to an area of lower pressure.

Wave Formation

Sandbar-A ridge of sand deposited by waves as they slow down near shore

Deposits by Waves

How wind causes erosion

Glaciers are named by how they form, how they move, and where they are located.

Water Erosion-occurs when ...

sediment is deposited by

waves creating different

landforms like:

Kinds of Glaciers

Continental glacier - A glacier that covers much of a continent of large island.

Waves are created by

wind

Valley glacier - A long, narrow glacier that forms when snow and ice build up in a mountain valley.

valley glacier moving

Ice Age - Cold time periods in Earth's history, during which glaciers covered large parts of the surface.

Beach-Wave washed sediment along a coast.

Types of Mass Movement

Spit-A beach formed by longshore drift that projects like a finger out into the water.

slump -to sink into a bog, muddy place, etc., or through ice or snow.

Wind erosion on a beach

Deflation- The process by which wind

removes surface materials.

landslide in Japan

creep- a very slow downhill movement of rock and soil.

Barrier beach - Storm waves pile up sand above sea level.

Longshore drift-The movement of water and sediment along a beach caused by waves coming into shore at a angle.

Landslides- the downward falling or sliding

of a mass of soil, detritus, or rock on or from a steep slope.

Mudslides- a slow-moving mudflow

Runoff- rain that flows over mountains, hills, and plains as well and with it it takes rock and other small sediments into a lake or river.

Rainfall becomes runoff, which in turn can create rills and gullies.

Gully- a water-worn ravine.

Rill- a small rivulet or brook.

Blowout- a bowl-shaped small depression in the ground.

Any one of several processes by which

gravity moves sediment downhill

River systems are networks of flowing water

that cause erosion. They pick up and deposit

sediment elsewhere.

Tributary-A stream that flows into a larger stream.

Mass Movement

Streams-A channel through which water is continually flowing downhill.

River-A large stream.

Kinetic energy-The form of energy an object has due to its motion.

Potential energy-Energy that is stored

and available to be used later.

Glacial Erosion

Groundwater Erosion and Deposition

Groundwater - Water that fills the cracks and pores in underground soil and rock layers.

Stalagmite - A cone-shaped calcite deposit that builds up from the floor of the cave.

Chemical Weathering - The process that breaks down rock through chemical changes.

Groundwater can dissolve mineral deposits

underground and create caverns. These

caverns can collapse and create sinkholes.

Karst topography - A type of landscape in rainy regions where there is limestone near the surface, characterized by caverns sinkholes, and valleys.

Stalactite - A calcite deposit that hangs

from the roof of a cave.

Plucking-the process by which a glacier

picks up rock as it flows over the land.

Abrasion- the grinding away of rock by other rock particle carried in water, ice, or wind.

There are 2 main ways that glacial erosion takes place, those are abrasion and plucking

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