An introduction to water

Question 1

at what temp is water most dense

Answer 1

4 degrees

Question 2

__ has a lower density than water

Answer 2

ice

Question 3

does water have a high or low specific heat capacity (SHC)

Answer 3

high

Question 4

what is surface tension

Answer 4

the capacity of a surface to resist something breaking through

Question 5

what percentage of water on the planet is fresh

Answer 5

3%

Question 6

how much of the 3% freshwater is locked up in ice?

Answer 6

over half

Question 7

how much water is available to humans

Answer 7

approx 0.3%

Question 8

describe how much energy there is at lower latitudes versus higher latitudes

Answer 8

lower - excess of energy

higher - energy deficit

Question 9

catchment area definition

Answer 9

Area in which water falling on or flowing across the land surface drains into a particular stream or river and flows ultimately through a single point or outlet.

Question 10

watershed defintion

Answer 10

high point or divide bordering a river basin from which headwater streams flow to different river systems. Everything within the watershed drains out of the catchment through the same point.

Question 11

name 4 factors that affect water flow

Answer 11

relief
geology 
vegetation
soils 
farming 
urban development