Let’s Play Weathering Wind Water Ice Gravity

Let’s Play

WeatheringWeathering

WindWind

WaterWater

IceIce

GravityGravity

What’s What’s Left?Left?

Weathering

Wind Water Ice GravityWhat’s Left?

The breaking down or cracking

of rock.

Weathering

The breaking down of rock by

physical processes

Mechanical Weathering

Changing a rock’s composition or changing a rock

by dissolving

Chemical Weathering

Two examples of Mechanical weathering

Ice wedging, plants & animals, falling from cliffs

Two examples of Chemical

Weathering

Natural acids, plant acids, acid rain, dissolving

limestone

The major agent of erosion in desert areas.

Rows of trees planted along fields to slow down SOIL erosion

Windbreaks

The type of wind erosion where

smaller sediments are blown away.

Large sediments are left behind.

Deflation

Nature’s sandblasting of

rocks…

Abrasion

One example of landform created

by wind DEPOSITION

Dunes, Loess

The grand canyon formed as a result

of this

Water erosion

A type of water erosion that occurs over large, flat areas

Sheet erosion

The reason fertile soil is found at the mouth of a

Nutrients are deposited along

with sediments as a river slows

One reason why farming pollutes

Runoff of pesticides and

fertilizers when it rains

Compare and contrast an

alluvial fan and a delta

Alluvial fan: deposited by a river in a valley delta: deposited by a river at its

mouth.

A large, frozen river that moves

under its own weight

glacier

Gouges left in rock by glaciers are the result of

this process

plucking

Bowl-like depressions formed at the point

where glaciers begin

Cirques

Sharp ridges left behind when two

side-by-side glaciers erode a

mountain

aretes

A valley formed when a glacier erodes a moutain

U-shape valley

Slump, creep, rock falls, and mud slides are all examples of

Mass movement

The name of the erosion by gravity that causes tree trunks to bend

The cause of all mass movement

on Earth

gravity

More material is moved over time by _______ mass

movement

Two methods of making steep slopes safer

Terracing, planting

vegetation, using concrete barriers

A _______ connects areas of equal elevation on

a topographic map.

Contour line

Lines close together on a map indicate this

Steep slope

Line far apart on a topographical

map indicate this

Gentle / gradual slope

A topographic map with a SMALL contour interval indicates this

A relatively flat area

Look at the map on the board. Tell the

contour interval and height of the hill.

Contour interval: 25 m

Height of hill: 102-125 m.

FinalFinalJeopardyJeopardy

LandformsLandforms

Discuss any TWO landforms on

Earth created as a result of

DEPOSITION of sediment.

Dunes, loess, eskers, moraine

deposits, beaches, sand bar, outwash

deposits, etc.

DailyDouble!

Let’s Play Weathering Wind Water Ice Gravity

Documents

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