7.1 Earth's Spheres Flashcards
(7 cards)
1
Q
What are the names of the four spheres of Earth?
A
- Lithosphere
- Atmosphere
- Hydrosphere
- Biosphere
2
Q
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What is the biosphere?
A
Region of Earth where all life exists. Consists of all ecosystems (living organisms interacting with non-living components)
Includes all other spheres - organisms in soil, water, air.
3
Q
What is the hydrosphere?
A
All the water on Earth
Oceans, lakes, rivers, groundwater, ice, all forms of precipitation.
4
Q
What are the %’s in the hydrosphere?
A
- 97% saltwater
- 3% freshwater
- 1% unfrozen freshwater
5
Q
What is the lithosphere?
A
The earth’s solid crust and the cool part of the mantle right below the crust.
rocks, sand, minerarls, soil, mountains, continents, ocean floor, etc.
6
Q
What is the atmosphere?
A
All the air and gasses that surround the Earth
7
Q
A
