RELIEF

Hello today my classmates and i we are going to talk about the Relief

ACTIVITY 1:

Write a definition for the following concepts:

Crust:The crust is the surface layer.It is a thin ,solid layer made of rock.

Mantle:The mantle is the internediate layer.This layer  is almost 85%of the Earths volume

Core:The core is the deepest layer

Magma. The magma is molten rock

 ACTIVITY 2:

 What temperature can be reached in the core  of the earth?

 The temperature in the core reaches about 4.500ºc

ACTIVITY 3:

 Who was Alfred Wegener? What is Pangea?

Describe the evolution of Pangea and explain the relationship between tectonic plates and earthquakes.

Finally, name the most important tecnonic plates in the world.

Alfred Wegener outlined his continetal drift theory.According to this theory 200 millions years ago there was a single giant land mass,called Pangea .This Pangea was surrounded by a single ocean called Tethys Sea

 ACTIVITY 4
 How many continents do we have on planet Earth? 
There are 6: America,,Asia,Europe,Africa,Oceanic,Antartic

Paste a map of the world with the name of the continents.

 

 

  ACTIVITY 5

Name the most important oceans of the world. The mos important oceanin the world are the:Indian Ocean,Pacific Ocean,Antartic Ocean,Artic Ocean,Atlantic Ocean

ACTIVITY 6:

The relief is the result of the internal forces of the earth and external agents.Write an example of the action of the internal forces. Name the external agents that cause the erosion and modeling of the Earth´s relief.

Internal forces:Plate,volcanos
External agents:Wind,rain,rivers....

  ACTIVITY 7

Write a definition and find one image for the following concepts:

Mountain:A mountain is a landa mass that rises high above the area around it

 

• Plain.Plains are large flats tracts of land

• Valley:They are sunken land and are sorrounded by mountains of ridge 
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• Plateu.Plateaux are large areas of high land .They are high well above sea level
• Hill:A hill is a landform that extends above the surrounding terrain. 
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• River:A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water
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• Delta :A landform atthe mouth of a river
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• Estuary:An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea.
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• Glacier:A glacier   is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation
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• Groundwater:Groundwater is water located beneath the earths surface in soil pore spaces and...
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• Lake.A lake is a body of relatively still water of considerable size, localized in a basin, that is surrounded by land apart from a river, stream, or other form of moving water that serves to feed or drain the lake.
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• ACTIVITY 8 Natural Risks
  What is a volcanic eruption? What consequences does it have?
   Explain what causes earthquakes. Does it have anything to do with tectonic plates?
  A volcanis eruption is an opening, or rupture , in a planet's surface or crust , which allows ... hazards, not only in the immediate vicinity of the eruption. ...
  A volcano 
  
  
  
  Eartquake is caused by:when the plates slide past each other or collide against ¡each other