Water on planet Earth

Question 1

atmospheric water is

Answer 1

water found in the atmosphere; mainly water vapour with some liquid water (cloud and rain droplets) and ice crystals

Question 2

cryospheric water is

Answer 2

the water locked up on the earth’s surface as ice

Question 3

hydrosphere is

Answer 3

a discontinuous (with gaps) layer of water at or near the earth’s surface. it includes all liquid and frozen surface waters, groundwater held in soil and rock and atmospheric water vapour

Question 4

oceanic water is

Answer 4

the water contained in the earth’s oceans and seas but not including areas such as inland seas (Caspian sea)

Question 5

terrestrial water is

Answer 5

consists of groundwater, soil moisture, lakes, wetlands and rivers

Question 6

oceanic water makes up..% of water on earth

Answer 6

97%

Question 7

cryospheric water makes up….%of freshwater

Answer 7

79%

Question 8

the estimated amount of total water on earth is

Answer 8

1.338 billion km3

Question 9

atmospheric water only makes of …..% of the atmosphere

Answer 9

0.4%

Question 10

when talking about time scales we can use (2 items)

Answer 10

diurnal: daily
geological: millions of years

Question 11

the ocean cover ..% of the planet’s surface

Answer 11

72%

Question 12

the dissolved salts in sea water are what allow water

Answer 12

to stay liquid below 0 degrees C

Question 13

ocean water is alkaline with a pH of

Answer 13

8.14

Question 14

in the last 250 years, the average pH has fallen by

Answer 14

0.11