Types of Landforms Caused by Erosion & Deposition LEQ: How do erosion and deposition affect Earth’s surface? Types of Landforms Caused by Erosion & Deposition

Remember…. 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 __________________.

Erosion by Gravity What erosional force causes Mass Movements? _______________ Name the four types of mass movement. _____________/__________

Erosion by Gravity _________ _________lide _____________ ___________

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

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

Running Water

Running water___________ Running Water cont. Waterfalls Running water___________ When the river flows over hard rock that is difficult to erode it creats steep drops or waterfalls.

Running Water - Waterfall

Running Water __________ Running Water cont. Alluvial Fans Running Water __________ A wide, sloping deposit of sediment formed where a stream leaves a mountain range.

Running Water – _________ _______

Running Water _________ Running Water cont. Meanders Running Water _________ A loop-like bend in the course of a river (p. 214)

Running water - _________

Running Water _________ Running Water cont. Oxbow Lake Running Water _________ A meander that has been cut off from the river. (p.214)

Running water – ________ _______ Lake

Running water ___________ Running Water cont. Flood Plains Running water ___________ The FLAT area on the banks of the river where rich soil develops when the river drops sediments when it floods.

Running Water – _________ ________

Running Water ___________ Running Water cont. Deltas Running Water ___________ Where the river flows into the ocean, it deposits sediments, forming a delta.

Running water - _________

A cliff cut away by waves Spit Wave ____________ Find Waves… Wave Cut Cliff Wave __________ A cliff cut away by waves Spit Wave ____________ Formed as sand deposits along the shore (looks like a finger)

Formed by wave action; deposit of sand. WAVES CONT. Sand Bar Wave _____________ Formed by wave action; deposit of sand.

PICTURES

Find Groundwater… 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.

GROUNDWATER CONT. Stalactite Groundwater _______________ Hangs like an icicle from the roof of cave; deposit of calcite Karst Topography Groundwater EROSION A sinkhole created when the roof of a cave collapses

PICTURES

Karst topography

Created by Wind ___________ Fine, wind deposited sediment Sand Dune Find Wind… Loess Created by Wind ___________ Fine, wind deposited sediment Sand Dune Wind DEPOSITION Found near beaches & deserts; hills of sand

PICTURES

A valley scooped out by a glacier Kettle Glacial _____________ Find Glaciers… 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.

GLACIERS CONT. Moraine Glacial ___________ Formed where a glacier deposits mounds or ridges of till

PICTURES