1.2 A View of Earth - Santa Rosa High School · 2018-09-05 · Earth’s 4 Major Spheres 1....
Transcript of 1.2 A View of Earth - Santa Rosa High School · 2018-09-05 · Earth’s 4 Major Spheres 1....
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1.2 A View of Earth
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Earth’s 4 Major Spheres
1. Hydrosphere:
All the water on Earth
2. Atmosphere: Thin gaseous envelope which surrounds the Earth
3. Geosphere:The interior & exterior of the Earth
4. Biosphere: All life on Earth
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Earth as a System
What is a system?
System: a group of parts functioning together to form a complex whole.
What drives this system?
● The sun● The Earth’s interior
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Changes to one part of an Earth system can create changes in another.
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What other kinds of events might cause a chain reaction through Earth’s systems?
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People and the Environment
Our actions produce changes in all other parts of the system.
Earth science vs. Environmental science
“Environmental” indicates a relationship between people and the physical world
The natural world does not always adjust to artificial changes in ways that we can anticipate.
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https://www.youtube.com/watch?v=YnzWDo3VFao
The Hoover Dam, began operation in 1936.Provides water and hydroelectric power to surrounding states.
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Earth’s Resources
What kinds of resources do we use?
● Renewable resources can be replenished over a relatively short period of time
● Nonrenewable resources take millions of years for significant deposits to accumulate.
https://www.youtube.com/watch?v=9oAW50PQ1To