LEQ: How do erosion and deposition affect Earth’s surface?

TYPES OF LANDFORMS CAUSED BY EROSION

& DEPOSITION

Landforms created when sediment is removed from an area are caused by __________.

Landforms created when sediment is placed or dropped in a new area are caused by __________________.

REMEMBER….

What erosional force causes Mass Movements?_______________

Name the four types of mass movement.1._____________/__________2._______________3._______________4._______________

EROSION BY GRAVITY

EROSION BY GRAVITY

_________

_____________

_________lide

___________

Any water that runs over the Earth’s surface is considered __________.

Moving water is a MAJOR agent of __________!

Some areas have more runoff than others. HILLY areas have more runoff than flat areas.Areas with a LOT of rain have more runoff than areas with little rain.

Areas with FEW plants have more runoff than areas with many plants.

RUNNING WATER

Like the other agents of erosion, running water creates MANY different Landforms._______________ ____________________________ Fan (p. 215)Meander______________Flood PlainsDeltas

Let’s look at the picture & decide if they were created by erosion or deposition (p. 216-217)

RUNNING WATER

V-Shaped ValleyRunning Water _________River flows through a deep ____- _________ valley near its source. As the river flows, it cuts the valley ________.

RUNNING WATER

RUNNING WATER

WaterfallsRunning water___________When the river flows over hard rock that is difficult to erode it creats steep drops or waterfalls.

RUNNING WATER CONT.

RUNNING WATER - WATERFALL

Alluvial FansRunning Water __________A wide, sloping deposit of sediment formed where a stream leaves a mountain range.

RUNNING WATER CONT.

RUNNING WATER – _________ _______

MeandersRunning Water _________A loop-like bend in the course of a river (p. 214)

RUNNING WATER CONT.

RUNNING WATER - _________

Oxbow LakeRunning Water _________A meander that has been cut off from the river. (p.214)

RUNNING WATER CONT.

RUNNING WATER – ________ _______ LAKE

Flood PlainsRunning water ___________The FLAT area on the banks of the river where rich soil develops when the river drops sediments when it floods.

RUNNING WATER CONT.

RUNNING WATER – _________ ________

DeltasRunning Water ___________Where the river flows into the ocean, it deposits sediments, forming a delta.

RUNNING WATER CONT.

RUNNING WATER - _________

•Wave Cut Cliff•Wave __________•A cliff cut away by waves

•Spit•Wave ____________•Formed as sand deposits along the shore (looks like a finger)

FIND WAVES…

Sand BarWave _____________Formed by wave action; deposit of sand.

WAVES CONT.

PICTURES

• Caves•Groundwater _______________•Water reacts with limestone in rocks & dissolves it, leaving a cave behind.

• Stalagmite•Groundwater DEPOSITION• Slow dripping builds up cones from the cave floor.

FIND GROUNDWATER…

StalactiteGroundwater _______________Hangs like an icicle from the roof of cave; deposit of calcite

Karst TopographyGroundwater EROSIONA sinkhole created when the roof of a cave collapses

GROUNDWATER CONT.

PICTURES

KARST TOPOGRAPHY

•Loess•Created by Wind ___________•Fine, wind deposited sediment

•Sand Dune•Wind DEPOSITION•Found near beaches & deserts; hills of sand

FIND WIND…

PICTURES

•U-Shaped Valley•Glacial ____________•A valley scooped out by a glacier

•Kettle•Glacial _____________•Forms when a depression, left from glacial till, is filled in by melting ice.

FIND GLACIERS…

MoraineGlacial ___________Formed where a glacier deposits mounds or ridges of till

GLACIERS CONT.

PICTURES