1 - Which of the following is NOT a form of mechanical weathering A- frost wedgi

Question

1 - Which of the following is NOT a form of mechanical weathering A- frost wedging B- exfoliation C - solution of limestone D-cracks widened by tree roots 2- Which of the following is most soluable in a temperate climate ? A - quartz B-calcite C- iron oxide D - clay 3 - Which of the following would tend to increase the rate of chemical weathering? A - mechanical weathering B - increased rainfal C -higher temperatures D - all of the above 4- The process by which soluble materials are selectively removed from soil is A -spheroidal weathering B - leaching C - precipitation D -infiltration 5 -(Tor F) Mechanical weathering increases the surface area of a given volume of rock 6 - (Tor F) All rain is somewhat acidic; so-called acid rain is simply more acidic than 7- A mountain, by convention, is a distinct topographic high that rises normal meters or more above the surrounding land.

Explanation / Answer

1. C. (solution of lime stone) lime stone solution contains oxides so oxides are not form of mechanical wathering

2. B.Calcite(The acidic water reacts with calcite and produces calcium bi corbonate which is due to weathering process)

3.D. All the above

4.B.Leaching(soluble constituent is washed out from solid material by percolation of the liquid through the solid material)

5.false(Mechanical weathering occurs due to environmental factors so surface area decreases.)

6.True(all rains are some percent acidic but acid rains contains sulfuric and nitric acids and less PH value)

7. 305 meters or 1000 Feet

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