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The Earth
 

1º de ESO Geography and History


Geography Unit THE EARTH PLANET- Index

THE EARTH

MOVEMENTS OF THE EARTH

GEOGRAPHIC NETWORK

REPRESENTATION OF THE EARTH

Mind maps MIND MAPS

Mind map Earth planet mind map

Glossary GLOSSARY

Equator
Tropic of Cancer
Tropic of Capricorn

Hemisphere
Equinox
Solstice

Interactive exercises EXERCISES

Links LINKS

Keywords KEYWORDS

Usual English phrases USUAL PHRASES


Relief Unit RELIEF

Climate Unit THE CLIMATE

Prehistory Unit PREHISTORIC LIFE

Egypt Unit EGYPT


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The Earth
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A planet

Solar system. Enlarge image
Solar system
Source: aerospaceweb.org
The Earth is one of the planets of the solar system. It ranks third in proximity to the sun, which receives light and heat.
It is approximately 150 million of kilometres far from the sun.
Surface's distribution
Surface's distribution

Water and land

Most of its surface is water (75%) and its divided between oceans, seas, rivers and lakes. The remaining 25% is land distributed between continents and islands. The Earth colour seen from the space is blue, due to the sea water.

Spherical in shape

The Earth planet is spherical in shape, but not perfect, as it is flattened by the poles.
An imaginary perpendicular line to the axis of the Earth, the Equator, divides it into two hemispheres: North and South.

Equator. Enlarge image
Ellipsoidal shape of the Earth.
Animation Enlarge animation

Source: courses.soil.ncsu.edu

A alive planet

The Earth is the only planet of the solar system where life exists. This is possible due to a number of factors:

Terrestral radiation. Enlarge image
Terrestral radiation
  • Temperature: the Earth is far from the sun 150 million km, which allows life.
  • Atmosphere: covers the Earth from pernicious solar radiation, protecting it and allowing life on it.
  • Liquid water: essential for plants and animals.
Liquid water
Liquid water

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Ejercicios
Ejercicio

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© Jorge Juan Lozano Cámara, profesor del IES Juan de la Cierva de Vélez-Málaga
Licenciado por la Universidad de Granada (España)
   claseshistoria@hotmail.com

Ana María Marcos Sánchez, profesora del IES Juan de la Cierva de Vélez-Málaga
Licenciada por la Universidad de Málaga (España)

Kerry Elyse Hart, Licenciada por la Universidad de Richmond (Virginia, USA)

 

 
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