The Geosphere. The Earth as a System. The Earth is a system of 4 interacting components. Consists of: - Geosphere - Hydrosphere - Atmosphere - Biosphere. The Geosphere Composition. The solid part of the Earth (rocks, minerals, soil, etc.) Most of the geosphere is below the surface.
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The Earth is a system of 4 interacting components.
- Geosphere - Hydrosphere
- Atmosphere - Biosphere
Pangaea – Wegener’s idea that all of Earth’s continents were joined into one giant landmass 200 million years ago.
Global Earthquake Distribution
Global Volcano Distribution
Which of these geologic hazards poses the greatest threat to the environment? Why?
Urban land = land covered mostly with buildings & roads and containing 2500 or more people.
Rural land = land containing few people & large areas of open space.
How are each type of land cover important to people?
Think About It… Are people dependent on the resources produced in rural areas?
Ecosystem services – resources produced by natural & artificial ecosystems
When urban areas grow too quickly, a crisis can occur.
Suburban development around Maui, HI
Heat Islands – increased temperature in a city
Why? - roads & buildings absorb more heat than vegetation
Effects? – local weather patterns change, more rainfall in cities
Pollution of air,
water, & land