1º eso a landscapes. 1º eso a changes in relief erosion sedimentation changes in relief erosion...
TRANSCRIPT
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LANDSCAPES
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CHANGES IN RELIEF
EROSION
SEDIMENTATION
CHANGES IN RELIEFER
OSI
ON
SED
IMEN
TATI
ON
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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.
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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
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Water transports the sediments , deposits it , and forms beaches.
Causes of erosion
Marine erosionWater
Waves and currents wear away coasts and create cliffs .
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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
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Carmen Vicente de la Peña
Isabel Vivas Nieto
Paloma Gundín López
Alicia Sánchez Cid
Elena Pablo Bermejo
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