1º ESO A LANDSCAPES.

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Presentation transcript:

1º ESO A LANDSCAPES

CHANGES IN RELIEF EROSION SEDIMENTATION CHANGES IN RELIEF EROSION 1º ESO A EROSION CHANGES IN RELIEF EROSION SEDIMENTATION SEDIMENTATION

SEDIMENTATION 1º ESO A 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.

EROSION 1º ESO A Degradation and the transport of the material or substances of the soil.

The most important agents of erosion are: Causes of erosion 1º ESO A The most important agents of erosion are: Temperature Water Wind Human beings

Rivers travel fast down steep slopes. They erode materials and create: Causes of erosion 1º ESO A Water Fluvial erosion Rivers travel fast down steep slopes. They erode materials and create: deep valleys canyons Colorado canyon

When the slopes are gentler, the water moves more slowly. Causes of erosion 1º ESO A Water Fluvial 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 .

Waves and currents wear away coasts and create cliffs . Causes of erosion 1º ESO A Water Marine erosion Waves and currents wear away coasts and create cliffs . Water transports the sediments , deposits it , and forms beaches.

Causes of erosion Temperature erosion 1º ESO A Temperature Temperature erosion Abrupt changes in temperature can break rocks. Water infiltrates through rocks. When it freezes, it expands, and the rocks break.

Wind transports sand or soil and deposits them in other places Causes of erosion 1º ESO A Wind Human beings Wind transports sand or soil and deposits them in other places Human beings are also responsible for changing landscapes with our activities.

EROSION 1º ESO A Valle la Luna (Chile) Laguna del Campillo (Madrid) 1997 Around the 80s Cathedral Beach ( Lugo) 2009

Made by 1º ESO A Carmen Vicente de la Peña Isabel Vivas Nieto Paloma Gundín López Alicia Sánchez Cid Elena Pablo Bermejo