Earth System exams 0.0 / 5 ? GeographyKey facts for atmosphere/biodiversityUniversityNone Created by: crhodes19Created on: 22-04-17 22:59 Average pressure at sea-level: 1013.25mb 1 of 29 Mean air density at sea level: 1.188kgm^-3 2 of 29 The energy required to evaporate 1kg of water at 0 degrees is: Latent heat of vapourisation- 2.5 million Joules 3 of 29 1 millibars= 100 Pascals 4 of 29 Measures of humidity include Humidity mixing ratio, absolute humidity and relative humidity 5 of 29 Which measure cannot allow direct comparision as it uses volume? Absolute Humidity 6 of 29 Which measure uses mass? Humidity mixing ratio 7 of 29 Which is reliant on temperature so does not explain atmospheric moisture? Relative humidity 8 of 29 Pressure= Force/Area 9 of 29 Density= Mass/Volume 10 of 29 What is the coriolis force expressed in? Radians 11 of 29 Where is a semi-permanent high? Azores 12 of 29 Where is the semi-permanent low in the north Atlantic? Iceland 13 of 29 Where is the semi-permanent low in the north Pacific? Aleutian Islands 14 of 29 Pressure gradient= Change in pressure/horizontal distance 15 of 29 As density increases... Pressure gradient force decreases 16 of 29 What does stenotopic mean- what is the opposite? Small tolerance for change- eurytopic 17 of 29 What is the term for gradual evolutional changes? Phyletic transformation 18 of 29 Species richness= Number of species 19 of 29 Species abundance= Number of individuals 20 of 29 Species diversity= A combination of the two 21 of 29 What is the difference between fundamental and realised niche? Fundamental is potiential space an animal could live with no other competition 22 of 29 Scramble competition? Same skills, share resource normally- when resource is short, the weakest loses out. 23 of 29 Contest competition? Same resources- the stronger species uses it, other cannot reach it. 24 of 29 What is K? Carrying capacity- the max population a ecosystem can hold. 25 of 29 What is R? Growth rate- changing this causes big fluxes 26 of 29 What happens as a space becomes crowded? There are less resources, and so births and deaths equalize, and the population drops back to the carrying capacity 27 of 29 Low stress and low disturbance= K species 28 of 29 Low Stress and high disturbances R species 29 of 29
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