Show:
Air Pollution and Acid Deposition
Greenhouse Effect and Ozone Depletion
Dissolved Oxygen in Water and Water Treatment
Soil
Waste
100
A substance with a harmful effect on the environment, with a presence higher than is natural due to human activity.
What is a pollutant?
100
The ability of an atmospheric gas to absorb radiated energy.
What is greenhouse factor?
100
The amount of oxygen (in ppm) needed by bacteria to decompose organic matter aerobically in a fixed volume of water over a set period of time, usually five days.
What is Biochemical Oxygen Demand (BOD)?
100
The result of continually irrigating soils.
What is salinization?
100
The three methods to waste disposal.
What are open dumping, landfill and incineration?
200
The process by which acidic particles, gases, and precipitation leave the atmosphere.
What is acid deposition?
200
Two forms in which oxygen is present.
What are O2 and ozone (O3)?
200
Cause of blue baby syndrome.
What is methaemoglobin?
200
This is the consequence of the use of chemicals such as pesticides and fertilizers.
What is soil pollution?
200
To prevent leaching, landfill sites are lined with this.
What is synthetic materials or impermeable clay?
300
A dangerous primary pollutant that can harm people, plants, and animals. Sources include volcanoes, and rotting vegetables. This is also a secondary pollutant by the oxidation of hydrogen sulfide.
What is SO2?
300
The equation for the depletion of ozone in the atmosphere.
What is O3 + O = 2O2?
300
BOD can be measured with this five day method.
What is the Winkler Method?
300
Agriculture disrupts the normal cycle of nutrients through the soil food web when crops are harvested.
What is nutrient depletion?
300
Classified as high level waste.
What are spent fuel rods from nuclear power stations?
400
Two control strategies to acid deposition.
What is reducing the level of emissions of nitrogen and sulfur oxides, switching to other alternative energy sources, such as wind and solar energy, using lime or calcium hydroxide to neutralize the acid and reduce acid rain in lakes? (Points awarded to any two.)
400
The main problem with CFCs.
What is the C-Cl bond, so replacements have fewer C-CL bonds.
400
Removed from rivers in power stations, can be returned with a temperature increase of up to 20°C.
What is water?
400
The two classified functional groups of SOM.
What are biological and physical?
400
The process by which paper is recycled.
What is 1.) Sorting into grades 2.) Cleaning of ink and additives 3.) Made into a slurry to form new types of paper 4.) Repulping of cellulose fibers
500
The final equation of the process by which nitrogen monoxide is oxidized in the air to nitrogen dioxide(from the internal combustion engine), then CO2 dissolves in water to form a mixture of nitrous/nitric acid.
What is H2O(l) + 2NO2(g) -----> HNO2(aq) + HNO3(aq)
500
Three alternatives to CFCs.
What are hydrocarbons, fluorocarbons, hydrochlorofluorocarbons (HCFCs), and hydrofluorocarbons(HFCs)? Points awarded to any three.
500
The anaerobic decay product of CH4.
What is carbon?
500
Three things included in the term soil organic matter (SOM).
What are identifiable, high-molecular- mass organic materials; simpler substances, and human substances.
500
Stored in cooling ponds of water until the activity has fallen to safe levels.
What is low level waste?