2017-11-01
600
1. Oceans cover the biggest part of the planet Earth.
2. Rotting process will give back minerals to the soil, where plants will again use them.
3. Industrial wastes, sewage and agricultural run-off have overloaded rivers and lakes with chemicals, wastes and nutrients.
4. A blanket of invisible gases (carbon dioxide) surrounds the Earth that acts just like a greenhouse.
5. The gases that people have made are damaging now the ozone layer.
B Choose the correct preposition
1. All life on Earth depends …….. water.
2. Rivers and lakes are polluted …….. garbage, or ………. poisonous chemicals.
3. Only a tiny fraction ….. the water, which covers the Earth, is …….. use to humanity: 97% is salt water, filling the oceans and seas.
4. Sediments ….. eroded land silt … dams, rivers and hydroelectric schemes.
5. Man and animals breathe …. oxygen and breathe … carbon dioxide.
C Which of the two Russian variants corresponds to the English equivalents:
| 1. distilled water | a) дистиллируя воду b) дистиллированная вода |
| 2. treated pollutants | a) обработанные загрязнители b) обрабатывать загрязнители |
| 3. removed particles | a) удаленные частицы b) удаляющие частицы |
| 4. installed clarifiers | a) устанавливающиеся осветлители b) установленные осветлители |
| 5. contaminated sources | a) загрязнять источники b) загрязненные источники |
D Write down two groups of the following words (nouns and adjectives):
container, salty, harmful, never-ending, condensation, evaporation, unchanging, supporter, resourceful, precipitation, quantity, quality, irrigation, pollution, consumer, usable, supplier, natural, important, cubic, topography.
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Vocabulary work
A Match the words and their definitions.
| 1. groundwater | A. water vapour either in the air or condensed on a surface. |
| 2. wastewater | B. the process by which any substance is converted from a liquid state into vapor |
| 3. moisture | C. water that occurs below the surface of the ground (source of water in springs and wells) |
| 4. irrigation | D. the spent or used water from a home, community, farm, or industry that contains dissolved or suspended matter. |
| 5. evaporation | E. artificial supply of water to land, to maintain or increase yields of food crops, a critical element of modern agriculture. |
B Match the synonyms
| atmosphere | pollution |
| contamination | tank |
| reservoir | downfall |
| vaporization | air |
| precipitation | evaporation |
C Translate the following word chains:
| 1 potential environmental pollutants, | 5 colour removal techniques, |
| 2 artificial wastewater cleaning, | 6 specially installed clarifiers, |
| 3 water pollution control plant, | 7 distilled water evaporator, |
| 4 surface stream substances, | 8 municipal sewage system. |
Text work
A Choose the best variant to complete the sentences.
1. Another measure is the (alteration, conversion, circulation, change) of industrial and heat power generation to closed-recirculating water-supply systems, which do riot require water of high quality.
2.Water (covers, protect, encase, wrap) nearly three fourths of the Earth, most being sea water.
3. It is advisable to use industrial wastewater for field (evaporation, moistening, irrigation).
4. Water (tanks, surface, resources, pollution) are continuously renewed within the hydro-logical cycle.
5. Settling basins should be built to collect the most (contaminated, spoiled, ruined, polluted) run-off water especially at the beginning of snow-storms and during snow melt.
