water mind map
Treatments 
Water systems
Contamination
Water cycle
Water facts
sedimentation
filtration
flocculation
chemical water treatment
disinfection
Microbiological pollution
Nutrient pollution
Groundwater pollution
Oxygen pollution
Chemical pollution
vapour
cloud
evaporation
rains
liquid
The amount of salt in salt water is different from each other
A lot of things could live in water
most of earth's water is in oceans
Some water might have come from comets
Most freshwater is in ice
Aquifers
Forms of water
Water tables
Ground water
Water shed
starts over
a substance that flows freely but is of constant volume, having a consistency like that of water or oil.
the process of turning from liquid into vapour.
a substance diffused or suspended in the air, especially one normally liquid or solid
a visible mass of condensed water vapor floating in the atmosphere, typically high above the ground.
moisture condensed from the atmosphere that falls visibly in separate drops.
it all starts over
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean.
The water table is an underground boundary between the soil.
a body of permeable rock which can contain or transmit groundwater.
solid, liquid, gas
water held underground in the soil or in pores and crevices in rock
Industrial and agricultural work involves the use of many different chemicals that can run-off into water and pollute it
The sources (or causes) of groundwater pollution can be landfills, effluents released from industries or wastewater
Microbiological water pollution is usually a natural form of water pollution caused by microorganisms
Nutrient pollution, a form of water pollution, refers to contamination by excessive inputs of nutrients
In polluted water, there might be too high an amount of oxygen, consuming bacteria that decompose wastes.
the chemical water treatment process used to remove solids from water
Flocculation is a process by which a chemical coagulant added to the water acts to facilitate bonding between particles
Sedimentation is a physical water treatment process using gravity to remove suspended solids from water
clear water passes through filters that have different pore sizes and are made of different materials
After the water has been filtered, water treatment plants may add one or more chemical disinfectants