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

2.6. Las capas de la Tierra y sus recursos The Earth´s layers and their origin The early Earth was liquid years ago

2.6. Las capas de la Tierra y sus recursos 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 The Earth´s layers and their origin The earth consists of several layers. The three main layers are the core, the mantle and the crust. Geosphere

2.6. Las capas de la Tierra y sus recursos The Earth´s layers and their origin Layers less dense than those of the geosphere: water and air Hydrosphere/ Atmosphere

2.6. Las capas de la Tierra y sus recursos The Earth´s layers and their origin All the living beings Biosphere

2.6. Las capas de la Tierra y sus recursos The Earth´s layers and their origin Inner Core – 1200 km made of solid Fe, Ni. Inner Core – 1200 km made of solid Fe, Ni. Outer Core – 2250 km made of liquid Fe, Ni. Outer Core – 2250 km made of liquid Fe, Ni. Mantle – 2900 km made of dense rocks. Mantle – 2900 km made of dense rocks. Crust – 5 – 40 km made of solid lighter rocks. Crust – 5 – 40 km made of solid lighter rocks. news/uk What is new?

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