IB SL Enviro- Geology Concepts
- Created by: stephanieolive
- Created on: 15-04-14 01:50
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- Geology Concepts
- Reasons for Seasonal and Climate vegetation
- Earth's tilt- earth is tilted 23.5 degrees on it's axis
- Earth's Rotation- Every year the Earth makes one full rotation around the sun
- Seasons on Earth- depending on Earth's rotation one pole will get more sun
- Solar Intensity and Latitude- equator ALWAYS warmer than poles
- Plate tectonics and Natural Disasters
- Layers of the Earth
- Core- earths center, composed of Ni and Fe
- Mantle- surrounds the core( Si, Mg, Fe, O2)
- Crust- covers mantle, made up of basalts/granite
- Oceanic Crust: floor of ocean's basins. Thinner and more dense than continental crust
- Continental Crust:broken up into tectonic plates, which are in constant movement with one another
- Plate Boundaries
- Divergent- formed when plates move away from one another-> causes magma to rise & coo
- mid atlantic ridge
- Convergent- when 2 plates meet and grind together. Creates subduction zones
- Ring of Fire, Himalayas
- Transform- plates glide past each other
- San Andreas Fault
- Intra plate hotspots- areas of the Earth where there is volcanic activity that can't be explained by plate tectonics
- Hawaiian Islands
- Divergent- formed when plates move away from one another-> causes magma to rise & coo
- Layers of the Earth
- Reasons for Seasonal and Climate vegetation
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