The Earth
- Created by: Becca
- Created on: 29-05-13 11:35
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- The Earth
- Core
- Inner Core
- Solid
- Outer Core
- Liquid
- Nickel and iron
- Radius of about 3500km
- Inner Core
- Mantle
- Convection Currents
- 1) Mantle gains energy from core.
- 2) Mantle rises towards crust
- 3) Mantle becomes cooler and starts to sink again
- 4) This continues and moves the tectonic plates
- Starts under crust and continues for 3000km
- Behaves like solid but is able to flow
- Convection Currents
- Crust
- Tectonic Plates
- Cracked pieces like a jigsaw
- Causes
- Earthquakes
- Volcanoes
- Ridges
- Moving constantly
- Average thickness
- About 6km under oceans
- About 35km under continents
- Tectonic Plates
- Atmosphere
- The Early Atmosphere
- Water Vapour
- Cooled and condensed to make oceans
- Carbon Dioxide
- Taken in by plants
- Reacts with carbonates to make sedimentary rocks
- Methane
- Reacted with oxygen and taken in by plants
- Ammonia
- Reacted with oxygen to make nitrogen
- Found out by the Miller-Urey Experiment
- Water Vapour
- The Current Atmosphere
- Oxygen
- 19%
- Nitrogen
- 79%
- Argon and other noble gases
- 1%
- Carbon Dioxide
- 0.4%
- Oxygen
- The Early Atmosphere
- Core
- Structure
- Inner Core
- Outer Core
- Mantle
- Crust
- Atmosphere
- Crust
- Mantle
- Outer Core
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