1º ESO A

LANDSCAPES

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CHANGES IN RELIEF

EROSION

SEDIMENTATION

CHANGES IN RELIEFER

OSI

ON

SED

IMEN

TATI

ON

1º ESO ASEDIMENTATION

Process for which the solid material transported by a water current settles at the back of a river , reservoir or artificial channel

The sea accumulates the sediments, contributing to the shape of the landscape. In this way beaches are formed.

1º ESO AEROSION

Degradation and the transport of the material or substances of the soil.

1º ESO A

The most important agents of erosion are:

Causes of erosion

Water

Wind Human beings

Temperature

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Rivers travel fast down steep slopes. They erode materials and create:

• deep valleys• canyons

Fluvial erosion

Causes of erosion

Colorado canyon

Water

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Fluvial erosion

Causes of erosion

• When the slopes are gentler, the water moves more slowly.

It transports the eroded materials

• When the rivers arrive at the platter lands , they deposit sediment on their banks .

Water

1º ESO A

Water transports the sediments , deposits it , and forms beaches.

Causes of erosion

Marine erosionWater

Waves and currents wear away coasts and create cliffs .

1º ESO ACauses of erosion

Temperature erosionTemperature

Water infiltrates through rocks. When it freezes, it expands, and the rocks break.

Abrupt changes in temperature can break rocks.

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Wind transports sand or soil and deposits them in other places

Causes of erosion

Wind

Human beings are also responsible for changing landscapes with our activities.

Humanbeings

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Cathedral Beach ( Lugo)

Laguna del Campillo (Madrid)

Valle la Luna (Chile)1997

2009

EROSION

Around the 80s

1º ESO A

Carmen Vicente de la Peña

Isabel Vivas Nieto

Paloma Gundín López

Alicia Sánchez Cid

Elena Pablo Bermejo

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