Water Distribution
Where most of earth's water is found
What is in the oceans and seas?
give an example of a macroinvertebrate that is in the mollusc family
clams, snails
True or false: Clear water is always clean and drinkable
What is false?
The process of water going from a gas to a liquid
What is condensation?
The process where liquid water turns into a gas
What is evaporation?
Why can't we use ocean water for farming, cooking, drinking, etc?
It is too salty. It is expensive to distill water.
If I want to know how CLEAR the water is, what scientific test should I run?
Turbidity test
True or false: Neutral substances have a pH level of 7
Litmus paper will turn RED if it touches this type of substance
What are acids?
This process occurs in the water cycle during the formation of clouds
What is condensation
Where the largest amount of freshwater is found on earth.
What are icecaps and glaciers?
E Coli is a bacteria that is sometimes found in runoff from farms. What is the likely source of this bacteria?
Sewage or animal waste
Acid rain could cause this kind of change in pH. (try to give a numeric description)
Lower pH (below 7, often dropping to 4, 5, or 6)
This happens to fish aquatic environments if there a pH level below 4.5
What is fish can no longer survive
This causes the dissolved oxygen level to drop after an algal bloom
what is eutrophication
or
what is bacteria feeding on decomposing algae
Where less than 1% of freshwater is found on earth
What are rivers, lakes, ponds, streams and groundwater?
This is freshwater humans can safely drink
What is potable water?
A natural underground storage area for freshwater
What is an aquifer?
True or false: increased temperature in a body of water can be considered pollution
True
This happens if there is too much algae in water
What is plants below cannot photosynthesize because there is no sunlight
Artificial lakes or rivers that we use for drinking water
What is a reservoir?
What two nutrients can lead to an algal bloom?
Nitrates and Phosphates
Name two macroinvertebrates that would be classified as insects.
mayfly, caddisfly, water bug, stonefly, alderfly, dragonfly
What does PTI stand for?
Pollution Tolerance index
This is a force that drives the flow of water all over the earth
what is GRAVITY