WorksheetsSciOly Water Ecology Trials1
Total questions: 137
Worksheet time: 2hrs 39mins
This graph depicts which symbiotic relationship?
Parasitism
Predation
Commensalism
Mutualism
Looking at this graph, what group of organisms would the solid line represent?
Predators
Prey
Parasite
Host
This graph depicts which form of symbiotic relationship?
Parasitism
Predator/Prey
Commensalism
Mutualism
This graph depicts what form of sybiotic relationship?
Parasitism
Competition
Commensalism
Mutualism
The graph below shows the changes in the size of a fish population over a period of time.
Carrying capacity of the enviornment
Life span of the species
Level at which extinction is reached
Level of maximum biodiversity of the species
What is the first step in the water treatment process?
coagulation
filtration and removal of debris, sand, grit, etc.
flocs
concentation
Preliminary treatment
prevents toxic chemicals.
removes large objects.
is unnecessary.
is useless.
Which substance is used in a sewage treatment system to kill harmful bacteria?
ammonia
chlorine
sand
soap
What is the first step of preliminary wastewater treatment, which removes large items such as plastic wrappers and sticks?
screening - employs the use of a "bar screen"
sedimentation
aeration
disinfection
List the following steps of Water purification in the correct order
Step P: Water is passed through a screen to remove debris.
Step Q: Pathogenic organisms are killed by chlorination, UV, or ozone.
Step R: Suspended particles clump and settle out.
Step S: A flocking agent, such as alum, is added to the water.
P, Q, R, S
S, P, R, Q
P, S, R, Q
R, P, S, Q
S, R, P, Q
Which method introduces microorganisms to break down hazardous organic compounds?
Sanitary landfill
Incineration
Discharge to sewers, streams, and rivers
Chemical treatment
Biological treatment
In which part of the wastewater treatment process are bacteria introduced to the wastewater to feed on organic particles, such as food and feces? (Select 2 choices)
sedimentation
aeration
disinfection
primary treatment
secondary treatment
The material that is removed from the wastewater, sent through the belt press and requires proper treatment and disposal methods is called
sediment
sludge
mixed liquor
aeration
What is no longer added to the water treatment process?
sludge
aeration
fluoride
sodium
Which human activity has the most negative impact on water quality?
agriculture
flushing toilets
washing clothes
recreational boating
What is the difference between black water and grey water?
Black water is water that is contaminated by nature, but grey water is water contaminated by man.
Black water is black colored water and grey water is grey colored water.
Black water is water that is from cooking and laundry, grey water is water that contains feces
Black water is contaminated by urine and feces but grey water is from cooking or laundry and others.
What is grey water?
Water contaminated by feces
Calcium and Magnesium dissolved into water
Contaminated water by humans such as bathing or laundry
water that's grey
John lives in a very busy city and he needs to get rid of his waste-water, what should he do?
He should install a septic system
He should join the city’s sewer system
He should build his own pipes to someplace outside of the city
He should save his wastewater and get a dump truck to take it away everyday.
If every house installed a septic system what would be the main problem?
It would be too loud
It would take up too much space
Kids can fall in
It can cause air pollution
What is the preliminary treatment
Water enters a tank and it stays in the tank for a few hours so solid particles can settle to the bottom
Water passes through a bar screen to remove sticks rocks and garbage. Then the water is slowed down when it enters the grit tank so that sand, gravel, and heavy metals settle to the bottom.
The process of removing debris from tanks to be trucked to a landfill.
When chlorine is added to water to kill the living organisms the it’s released into a lake or river
where does stormwater runoff come from? Select the most correct answe
precipitation in country roads, marshes, lawns
water in houses, apartments, buildings
precipitation in roads, roofs, lawns
precipitation in roads, farms, bathrooms
Casandra said gray water and black water are the same because they are both wastewater. Why is she incorrect?
because they aren’t wastewater
because gray water is feces and urine and black water is used by humans
because one is contaminated by humans and the other is not
because grey water is used by humans and blackwater is feces and urine
How is gray water contaminated?
cooking, laundry, bathing
cooking, gardening, cleaning
pesticides, feces, fertilizers
feces, urine
why is gray and black water different from stormwater runoff?
because gray and black water is chemical and stormwater runoff is natural
because they are contaminated by humans and stormwater runoff is not
because they are wastewater and stormwater is from human waste
because stormwater runoff is from precipitation and gray and black water are by human activity
Which type of water treatment system would be ideal for a city like Tokyo?
septic system
sewer system
UV radiation
bioremediation
What is something negative about treating both stormwater runoff and wastewater? There are two correct answers.
stormwater can pick up pollutants and carry them straight into surface water.
greater resources are used to treat the water
more wastewater treatment plants need to be built
only one drainage system needs to be built
