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Transcript of Natural Process
Natural processes that can affect Earth's oceans and land
describes a process that breaks down rocks at or near the surface of the earth.
can be either physical or chemical
cause of the surface of the Earth to dissolve, decompose, and break into smaller pieces.
water is an important cause of weathering.
plants cause weathering when the roots break apart rock.
changes in temperature can break rock, as well as ice forming inside cracks in the rock cause it to break even more.
anything that causes rocks to wear down or break apart is a cause of weathering.
Earth's oceans and land can be affected in constructive ways and destructive ways by natural processes.
Processes that destroy
Processes that create landforms
is the movement of sediments and soil by wind, water, ice, and gravity.
is the dropping, or depositing, of sediments by water, wind, or ice.
builds up new land on Earth's surface, like a delta at the end of a river or the pile up of a sand dune in the desert.
shells on the beach are deposition by ocean waves.
volcanoes are mountains with openings in Earth's crust through which magma, gases, and ash reach Earth's surface.
can change Earth's surface.
magma erupts from the top of the mountain can be change, either built up or exploded off.
lava and ash can destroy forests and bury fields.
can even change Earth's weather patterns.
also occur under the oceans; these volcanoes that are built up are called
if the seamount rises above the ocean surface it is called a volcanic island. (Hawaii or Japan)
are mass movements of land due to gravity.
can cause buildings to fall, or power and gas lines to break.
even occur on the continental slope in the ocean
are vibrations on Earth's surface caused by sudden movement in Earth, often along a
a break in Earth's surface.
cause little damage and some cause a lot of damage.
large ones can cause landslides
under the ocean can cause huge waves, called tsunamis that destroy land and cause great damage if they come ashore.
occur when a large amount of water covers land that is usually dry.
when the flood occurs, rapid erosion can take place and move soil and sediment away.
when the flood recedes, new sediment is left behind and can build up rich soil deposits.