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NS9 - Life Sciences 2018 > The earth as a system > Flashcards

The earth as a system Flashcards

1
Q

Spheres

A

Main parts of the earth as a system

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2
Q

The four main spheres of the earth

A

Atmosphere

Lithosphere

Hydrosphere

Biosphere

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3
Q

Biosphere

A
  • The living sphere of the earth
  • Includes all of life
  • Occurs where the atmosphere, lithosphere and hydrosphere all come together
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4
Q

Atmosphere

A

The sphere of the earth that is the gases

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5
Q

Lithosphere

A

The sphere of the earth that is the rock and soil

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6
Q

Hyrdrosphere

A

The sphere of the earth that is the water (solid, liquid and gas)

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7
Q

A system

A
  • Something made of many different parts
  • Parts are interconnected
  • Parts are all essential for the whole system to function properly
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8
Q

Which spheres are interacting?

Water erodes soil and carries sediment to the sea

A

Lithosphere and hydrosphere

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9
Q

Which spheres are interacting?

Water evaporates in the sea and forms clouds

A

Hydrosphere and atmosphere

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10
Q

Which spheres are interacting?

Volcanoes erupt shooting gases and dust up into the air

A

Lithosphere and atmosphere

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11
Q

Life also needs more than just what is found in the earths spheres to exist. What is this?

A

Energy from the sun / solar radiation

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12
Q

The process whereby solar radiation is used by certain organisms to make food

A

Photosynthesis

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13
Q

Spheres involved in the process of photosynthesis

A
  • Atmosphere: carbon dioxide used and oxygen produced
  • Hydrosphere: water used from the soil
  • Lithosphere: soil provides water and nutrients
  • Biosphere: the organism is living
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14
Q

The general location of the biosphere

A

Close to the surface of the earth

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15
Q

Limiting factors as one goes higher in the atmosphere

A
  • the oxygen becomes less dense
  • It gets colder
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16
Q

Limiting factors as one goes deeper in the oceans

A
  • Less light from the sun penetrates the water
  • Food chains are affected (no photosynthesis)
17
Q

Limiting factors deeper underground

A
  • No light underground (no photosynthesis)
  • Pressure increases
18
Q

The branch of science that studies the distribution, quality and movement of water on the Earth

A

Hydrology

19
Q

The branch of science that studies life

A

Biology

20
Q

The branch of science that studies the origin, formation mineral composition and classification of rocks

A

Geology / lithology

NS9 - Life Sciences 2018 (6 decks)

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