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WorksheetsGE-FEL WW
Total questions: 50
Worksheet time: 26mins
Any substance that decreases the quality of water is called.
(a)
The primary water pollution problem in the world is the lack of disease free drinking water.
True
False
Which of the following is a point source of water pollution?
Lawns and gardens in a suburban area
City streets in an urban area
A sewage treatment plant
Highways and paved roads in a rural area
An area of farmlands
What are the 2 nutrients that are responsible for algae bloom?
(a)
An infant disease cause by drinking groundwater or surface water with nitrate contamination.
(a)
Formed when waste in a landfill mixes with water percolating down from the surface or with groundwater moving through the site.
Nutrients
Organic matter
Leachate
Fertilizer
All of the following are causes of thermal pollution except:
Can occur when shade trees are removed along waterways.
When water is heated as it runs over hot impervious surfaces such as roads and parking lots.
Discharges from piggery or poultry farms.
From warm water discharges from cooling towers or power generating equipment.
A measure of the concentration of H+ ions in any bodies of water.
(a)
Pesticide pollution come from agricultural and urban areas, especially golf courses and farms.
True
False
The collection of the relevant information on water quality
Water quality monitoring
Water quality assessment
Water quality analysis
Water quality sampling
The overall process of evaluation of the physical, chemical and biological nature of the water.
Water quality monitoring
Water quality assessment
Water quality analysis
Water quality sampling
Involving sophisticated techniques and highly trained technicians and engineers for sample analysis and data handling.
Intermediate-level monitoring
Simple monitoring
Advanced level monitoring
Low-level monitoring
All are physical parameters for water quality testing except:
Temperature
Total suspended solids
Turbidity
Taste
Alkalinity
What is the unit for specific conductance?
g/kg
µS/cm
mg/L
ppm
Attempts have been made to genetically engineer microbes so that they degrade contaminants more efficiently and quickly.
True
False
What is Administrative Order No. 2017-0010
Clean Air Act
Phil. National Standard for Drinking Water
Clean Water Act
Clean Soil Act
According to PNSDW, the maximum limit for Chloride content for drinking water is ?
50 mg/L
200 mg/L
150 mg/L
250 mg/L
The maximum total coliform bacteria in drinking water should pass the standard value which is;
>1 total coliform colonies/ 100 ml
<1 total coliform colonies/ 100 ml
<1.2 total coliform colonies/ 100 ml
>1.2 total coliform colonies/ 100 ml
Nitrates (NO3-) is one of the parameters to check if the drinking water is safe to drink. What is the maximum tolerable concentration of nitrates set by PNSDW?
20 mg/L
10 mg/L
50 mg/L
60 mg/L
What do you call this water treatment method as shown in the drawing?
Distillation treatment
Chlorination treatment
Ozone treatment
Ultraviolet irradiation treatment
What do you call this water treatment method as shown in the drawing?
Rapid sand filtration
Multi-media sand filtration
Ultra filtration
Sand and Gravel filtration
Secondary treatment of water consists of sedimentation and filtration followed by chlorination. Sedimentation can be carried out by holding the raw water in ponds or tanks. What is the main disadvantage of this system?
Low cost and 'in-line' installation.
Sudden increase in turbidity overloads the system.
Change of cartridge is simple.
Operation is fool-proof. Once the cartridge is clogged, flow simply stops.
Compounds used in chlorination treatment are mentioned below, except for ?
Cl2
NH2Cl
NH4Cl2
HOCl
CCl4
Biogeochemical cycles move all nutrients through air, water, soil, rock and living organisms over millions of years.
True
False
Nonliving cycles like rock cycle, water cycle and other chemical cycles.
Biotic
Flora
Abiotic
Fauna
What is the image all about?
(a)
Carbon enters biological cycles through (a) to produce organic forms of carbon.
What part of the plants will photosynthesis occur?
Flower
Roots
Stem
Leaves
During photosynthesis algae take up CO2 dissolved in water while during respiration it will release O2.
True
False
Carbon is stored in different form except;
Organic molecules – in living and dead organisms.
Fossil fuel and sedimentary rocks
Carbon dioxide in atmosphere
Shells of marine organism
Inorganic substances
The second largest nutrient cycle on the planet.
Carbon cycle
Water cycle
Phosphorus cycle
Nitrogen cycle
Oxygen cycle
The first largest nutrient cycle on the planet.
Carbon cycle
Water cycle
Phosphorus cycle
Nitrogen cycle
oxygen cycle
What kind of microorganisms that are capable of transforming atmospheric nitrogen into fixed nitrogen that can be used by plants.
(a)
When we burn coal and oil, what element will be release to the atmosphere in a large content
Nitrogen
Sulfur
Oxygen
Phosphorus
The strong Gaia hypothesis says that;
Life controls the earth’s life-sustaining processes.
Life influences the earth’s life-sustaining processes.
The weak Gaia hypothesis says that;
Life controls the earth’s life-sustaining processes.
Life influences the earth’s life-sustaining processes.
Statements below give the importance of the ocean except;
Oceans provide important sources for food, energy, and minerals
Oceans give us calamities like typhoon.
Oceans provide transportation
Oceans affect weather and climate
How many percent does the earth covered by ocean water?
70%
75%
80%
85%
65%
What is the ration of water and salt in the ocean?
75 : 25
80 : 20
96.5 : 3.5
92.5 : 7.5
These gases are found in the ocean water except:
Nitrogen
Sulfur
Oxygen
Carbon dioxide
These are the major ions in typical seawater except:
Cl-
SO4-2
Na+
Mg+2
Fe+2
Heat Capacity is the energy added to raise temperature of 1 gram of substance by 1°C
True
False
Light transmission is reflected as it goes deeper in the water column.
True
False
Oligotrophication is the excessive addition of nutrients in the sea.
True
False
Molecules speed each other up by physically bumping.
Contraction
Radiation
Convection
Conduction
Electromagnetic radiation is absorbed and raises temperature.
Radiation
Conduction
Convection
Contraction
Carried by movement of fluid.
Contraction
Conduction
Convection
Radiation
The speed of sound in water is, ____________
1000 ms
1500 m/s
1200 m/s
1300 m/s
Decrease in light intensity due to absorption and scattering by suspended particles is called attenuation.
True
False
The average ocean pH is __________
7.6
7.8
8.0
8.2
