Unit 1 Flashcards
What are the global water cycle stores?
Atmosphere
Land
Oceans
What are the global water cycle flows?
precipitation
evaporation
precipitation
run off/groundwater flow
evapotranspiration
What % of global water is stored in the Oceans?
97%
What is the total amount of water in km cubed that flows through in the global water cycle each year?
1033km cubed
Draw a diagram to show the inputs, outputs, flows and stores?
In Desk (to check its correct)
What is an open system?
a system in which the quantity of matter will vary overtime
What is a closed system?
a system in which the quantity of matter is fixed
Why is a drainage basin an open system?
because the quantity of water will fluctuate over time due to variations in the quantity of inputs and outputs
Why is the global water cycle a closed system?
because the quantity of water is fixed as no water leaves or is created (finite resources)
Where are the world’s freshwater supplies?
2.5% of all water and over 2/3 is located in glaciers
How have water stores changed over time?
There has been an increase in the cryosphere store (freshwater)
There has been a reduction in the ocean store (saltwater)
What is Arctic Amplification?
In Arctic areas the average figure is 2 degrees (intense warming in the arctic)
How does the ice albedo feedback mechanism work?
- increase in temperature
- ice melts
- darker surfaces revealed
- albedo reduced
- increased absorption of solar radiation
- back to the start
What was the total change in sea level rise (cm) between 1880 and 2008?
17.5 cm
What is the case study for artic amplification?
Greenland Ice Sheet = temperatures rise in the past decade
= losing ice faster than it was in the 1990’s
