WorksheetsWater Treatment and Quality Chem 101
Total questions: 24
Worksheet time: 19mins
Match the following types of pollutions with their examples
Pollution by pathogens
E.Coli
Pollution by nurtients
Fertiliser run-off
Pollution by sediments
Erosion from construction sites
Pollution by radioactive substances
Nuclear plant discharge
Pollution by inorganic chemicals
Acid mine drainage
The diagram shows a waste water treatment process. Select the correct process for each stage (i.e. what is removed):
(a) : removes large debris such as plastics, rags and other solid materials.
(b) : Removes small particles like sand, gravel and other inorganic materials.
(c) : Introduces air into the sewage to encourage aerobic bacteria to break down organic matter.
(d) : Settles out suspended solids, separating them from the liquid to form sludge.
(e) : Reduces the water content of sludge, making it easier to handle and dispose of.
Screening
Grit removal
Aeration
Clarifier
Solids De-watering
Fresh water is mostly found in
oceans.
surface/other fresh water.
ground water.
glaciers and icecaps.
Ocean acidification can be caused by
CO2 dissolving in water and ionising.
marine organisms creating acids.
bleached coral dissolving.
increases in global temperatures.
Water is best described as
a polar covalent molecular substance.
an ionic compound.
a non-polar covalent molecular substance.
an ionic compound that has not fully separeted into ions.
The bonding present in water is best described as
intramolecular polar covalent and intermolecular hydrogen bonding.
intramolecular polar covalent and intermolecular dipole-dipole bonding.
intermolecular polar covalent and intramolecular hydrogen bonding.
intermolecular non-polar covalent and intramolecular dipole-dipole bonding.
The most important consequence, for living things, of ice floating on water is:
it prevents water below the surface freezing.
it blocks out UV rays.
it prevents CO2 dissolving into water.
it eventually drops the temperature to the freezing point of water.
What law regulates water pollution, including sewage systems?
Pollution Control Act
The Clean Water Act
Safe Drinking Water Act
What can happen to fish when there is not enough oxygen in the water?
They can suffocate
They can't float
They can't see.
Nothing. Fish don't need oxygen.
Eutrophication is caused by (select all that apply)
runoff of manure from farms
runoff of fertilizers and pet waste from lawns and homes
runoff from detergents (containing phosphates)
acid mine drainage
What is the type of water that moves underground?
surface water
water table
groundwater
watershed
Why do algae blooms happen?
there are too many nutrients in the water
there are too many fish in the water
there is not enough turbidity in the water
all of these options
What is water used for in agriculture?
As a pesticide
Cleans crops
Water parks
Irrigation
What does "potable" mean?
Safe to drink
Frozen
Liquid water
Dirty water
A ship carrying gasoline runs into shore and spills large amount of gasoline.
Point
Non-Point
Can be traced back to the point of origin.
Point Source Pollution
Non-point source pollution
When phosphates in laundry detergents or nitrogen from fertilizer get into aquatic ecosystems and cause a chain reaction
water reclaimation
thermal pollution
biomagnification
eutrophication
what can increase levels of nitrate in water?
sewage and fertilizer
pesticides
mining waste
all of these options
Accumulation of pollutants at successive levels of the food chain, affecting the top predator the most. Primary consumers have low levels of pollution in them.
water pollution
thermal pollution
biomagnification
artificial eutrophication
Organisms that allow us to know the health of the water
Indicator species
wastewater treatment
Turbidity
contaminant species
Water that gets flushed down your toilet and goes to a holding tank buried in someone's yard refers to:
A sewer system.
A septic tank system.
A storm water system.
A military latrine.
Water that gets flushed down your toilet and goes through a series of pipes to a wastewater plant refers to:
A sewer system.
A septic tank system.
A storm water system.
A military latrine.
What type of light is used to sterilize the water before it's released?
infrared light
red light
ultraviolet light
white light
