TYPES OF LANDFORMS CAUSED BY EROSION DEPOSITION LEQ

TYPES OF LANDFORMS CAUSED BY EROSION & DEPOSITION LEQ: How do erosion and deposition affect Earth’s surface?

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. 1. _______/_____ 2. ________ 3. ________ 4. ________

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

RUNNING WATER – _______

RUNNING WATER CONT. Meanders Running Water _____ A loop-like bend in the course of a river (p. 214)

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

RUNNING WATER - _____

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)

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

FIND WIND… • Loess • Created by Wind ______ • Fine, wind deposited sediment • Sand Dune • Wind DEPOSITION • Found near beaches & deserts; hills of sand

PICTURES

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