CIENCIAS DE LA NATURALEZA
1º DE E.S.O. PRIMER TRIMESTRE
FIRST TERM
Chapter 2:
The Earth in the
universe
Planet Earth seen from the Voyager 1 in 1990
https://planetary.org/images/Blue_Dot_big.jpg
http://forums.yoyogames.com/forums/3/topics/62440
2.6. Las capas de la Tierra y sus recursos
2.6.1. The Earth´s layers and their origin
4.500.000.000 years
ago
The early
Earth was
liquid
2.6. Las capas de la Tierra y sus recursos
2.6.1. The Earth´s layers and their origin
Materials with highest density were atracted to the center.
Materials with lower density went to the external part of Earth
2.6. Las capas de la Tierra y sus recursos
2.6.1. The Earth´s layers and their origin
Geosphere
The earth consists of
several layers. The three
main layers are the core,
the mantle and the crust.
http://www.thelayeredearth.com/?gclid=CJ2n6KGL_KsCFUMOfAodoA9qmQ
2.6. Las capas de la Tierra y sus recursos
2.6.1. The Earth´s layers and their origin
Hydrosphere/
Atmosphere
Layers less dense than
those of the geosphere:
water and air
http://www.thelayeredearth.com/?gclid=CJ2n6KGL_KsCFUMOfAodoA9qmQ
2.6. Las capas de la Tierra y sus recursos
2.6.1. The Earth´s layers and their origin
Biosphere
All the living beings
http://www.thelayeredearth.com/?gclid=CJ2n6KGL_KsCFUMOfAodoA9qmQ
2.6. Las capas de la Tierra y sus recursos
2.6.1. The Earth´s layers and their origin
What is new?
http://www.bbc.co.uk/
news/uk-14678004
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Inner Core – 1200 km made of solid Fe, Ni.
Outer Core – 2250 km made of liquid Fe, Ni.
Mantle – 2900 km made of dense rocks.
Crust – 5 – 40 km made of solid lighter rocks.
2.6.1. The Earth´s resources
Composition for the exam:
My ecological footprint and the
earth´s resources
Calculate here your ecological footprint. Do it in
presence of an adult. Don´t write any personal data
http://myfootprint.org/
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