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Test V unit V weathering

I. Give Russian equivalents.

Mechanical weathering; parent rock; frost wedging; abrasion; thermal expansion and contraction; overlying rock; to thaw during the day; daily freeze-thaw cycle; to heat and cool granite repeatedly; common substance; rare in moist environment; acid solution; much more corrosive than pure water; slightly acidic; the only rock-forming silicate mineral; unaltered quartz grains.

II. Give English equivalents.

Механическое и химическое выветривание; разложение (разрушение) пород; тысячелетие; захороненные породы; текущая вода; термальное расширение и сжатие; быть подверженным коррозии; отличаться как физически, так и химически от изначального материала; чистая (без примесей) вода; делювиальные склоны; гидролиз; окисление; кислотный дождь; декомпрессия (снятие нагрузки (давления) с образованием трещин); образование ржавчины.

III. Match the words from “a” and “b” to make word combinations.

  1. organic; to freeze; to be shaped by; to drag across; laboratory; to decompose; a small; to remain; a reversible; atmospheric;

  2. chemically; proportion of water; intact; reaction; activity; at height; bedrock; oxygen; collisions; experiment.

IV. Complete the sentences.

  1. Weathering is . . . . of rocks and minerals at the Earth’s surface.

  2. . . . . is the removal of weathered rocks and minerals by moving water, wind, glaciers, and gravity.

  3. . . . . reduces solid rock to rubble.

  4. If water accumulates in a crack and then freezes, its expansion pushes the rock apart in a process called . . . .

  5. The mechanical wearing and grinding of rock surfaces by friction and impact is called . . . .

  6. The most important processes of . . . . are dissolution, hydrolysis, and oxidation.

  7. . . . . can proceed in either direction if conditions change.

  8. Because quartz is so tough and . . . . to weathering, it is the primary component of sand.

(frost wedging; chemical weathering; resistant; mechanical weathering; the decomposition and disintegration; mechanical weathering; a reversible reaction; erosion)

V. Use the word in brackets to form a word that fits in the space.

  1. Weathering itself involves little or no . . . . of the decomposed rocks and minerals. (move)

  2. The fragments are no . . . . from the parent rock, except that they are smaller. (differ)

  3. Perhaps thermal expansion and contraction are more . . . . in large outcrops. (signify)

  4. Water, carbon dioxide, acids and bases, and oxygen are common substances to . . . . rocks. (compose)

  5. Calcite barely dissolves in pure water but is quite . . . . in acids. (solve)

  6. These ions render the water . . . . (acid)

VI. Do the test. Only one variant is possible.

  1. Last Monday he . . . . not eat breakfast because he got up late.

  1. do; b) is; c) did.

  1. How . . . . you? – I am not very well today.

  1. is; b) was; c) are.

  1. She always . . . . a shower in the morning.

  1. have; b) is; c) has.

  1. Mushrooms . . . . in autumn.

  1. is gathered; b) are gathered; c) gathered.

  1. The rivers in America are . . . . than those in England.

  1. biggest; b) big; c) bigger.

  1. Who is the . . . . student in your group?

  1. more good; b) best; c) better.

7. Kate is not . . . . nice . . . . Ann.

  1. as . . . as; b) so; c) as.

8. This woman is . . . . young . . . . that one.

  1. so; b) as; c) as . . . as.

9. Russian is a very . . . . country.

  1. largest; b) larger; c) large.

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