Earth's Waters Flashcards
also known as the sources of water
earth’s waters
majority, largest distribution of water
oceans
found in oceans and seas
saltwater
makes up 97.5% of earth’s water
saltwater
largest majority source in fresh water
glaciers
0.4% of the total water supply, but includes rivers, lakes, streams
surface water
they are part of the freshwater category
rivers, lakes, streams
sources of saltwater reservoir
oceans, seas, saltlakes
cover about 71% of the earth’s surface
oceans
contain approximately 97% of the earth’s water, major
oceans
smaller bodies of saltwater connected to oceans or enclosed by land
seas
examples of seas
Mediterranean, Caribbean, Arabian, West Philippine Sea
inland bodies of water with high salinity due to high evaporation and minimal freshwater inflow
salt lakes
examples of salt lakes
dead sea, great salt lake
one of the saltiest lakes
dead sea
the concentration of dissolved salts in water
salinity
salinity is expressed in? ___________________________
parts per thousand (PPT)
indicates how many grams of salt are present in 1,000 grams (1 liter) of water
parts per thousand (PPT)
factors affecting salinity
- geographic location (high salinity areas and low salinity areas)
- climate
a factor affecting salinity in regions with high evaporation rates
high salinity areas
high salinity areas like red sea can have salinity above _____ ppt
37
a factor affecting salinity in polar regions and near large rivers
low salinity areas
low salinity area like amazon river outflow can have below _____ ppt
33
climate factors
- warmer climate increase evaporation, leading to higher salinity
- colder climates often reduce salinity due to ice melt and lower evaporation
found in glaciers, ice sheets and permafrost
fresh water reservoir
are rocks
permafrost
permanent body of ice
glaciers
68.7% of __________ in earth
glaciers
essential for drinking, agriculture, and ecosystems
fresh water reservoir
things included in surface reservoir
stream, river, lakes, wetlands, groundwater
flows down slope toward —– because of gravity
stream
large inland bodies of fresh/saline water
lakes
land areas covered with water, biologically diverse environments filled with species
wetlands
largest reservoir of liquid freshwater on earth and usually found in rocks
groundwater