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
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2
Q

`

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.

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3
Q

What is the hydrosphere?

A

All the water on Earth

Oceans, lakes, rivers, groundwater, ice, all forms of precipitation.

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4
Q

What are the %’s in the hydrosphere?

A
  • 97% saltwater
  • 3% freshwater
  • 1% unfrozen freshwater
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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.

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6
Q

What is the atmosphere?

A

All the air and gasses that surround the Earth

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7
Q
A
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