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Physical Geography Uni > The Hydrological Cycle > Flashcards

The Hydrological Cycle Flashcards

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1
Q

Property: Density

Why is it important?

A

Prevents freezing in lakes and produces seasonal stratification

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2
Q

Property: Melting and boiling points

A

Water can exist as a liquid on the earth’s surface.

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3
Q

Property: Heat Capacity

A

Moderates temperature by preventing extremes

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4
Q

Property: Heat of vaporisation

A

Moderates temperature extremes

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5
Q

Property: surface tension

A

High surface tension (how much molecules stick together) regulates drop formation

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6
Q

Property: Absorbtion of radiation

A

Allows photosynthesis to happen

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7
Q

Property: Solvent properties

A

Can dissolve into substances in the hydrological cycle and in biological systems.

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8
Q

How much water is stored in Oceans?

A

95%

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9
Q

How many 10^6 km^3 of ocean is there?

A

1400 10^6 km^3

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10
Q

How much water is stored in ice caps and glaciers?

A

almost 3%

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11
Q

How much water is stored in the atmosphere?

A

0.001%

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12
Q

How much is stored in rivers and lakes?

A

0.0091%

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13
Q

On average, how long does water vapour stay in the atmosphere? - fluxes

A

11 days

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14
Q

On average, how long does water stay in the ocean?

A

37,000 years

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15
Q

What is a flux?

A

Exchange of water between different reservoirs

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16
Q

What does the hydrological cycle refer to?

A

The storage/ movement of water between the hydrosphere, the lithosphere, the biosphere and the atmosphere.

17
Q

Which factors impact runoff?

A

precipitation + evapotranspiration

18
Q

How to light and heavy isotopes behave?

A
  • lighter isotopes evaporate

- heavier isotopes condense

19
Q

Why does it rain more along the equator?

A

Rising air = area of low pressure = more rainfall

20
Q

How do you estimate ice volume and sea level?

A

Through 16O/18O ratios.

- Basically by looking at the ratio of each type of oxygen isotope

Physical Geography Uni (11 decks)

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