EPS 38-Intro to Earth Science Common segment for sections (512/513) erinds away

Question

EPS 38-Intro to Earth Science Common segment for sections (512/513) erinds away at and polishes exposed In arid regions, the action of rock a) abrasion ) oxidation d) unloading .The underlying mechanism by which plate tectonics operates is a) differentiation 7. b) aceretion c) mantle convection d) inception VERY ANGULAR ANGULAR ANGULAR ROUNDED ROUNDED ROUNDED SUB SUB WELL 8. The above diagram shows the different degrees of roundness of sediment. Which side indicates an increase in the transport distance? a) To the left. b) To the right. c) All represent the same transport distance. d) It is not possible to tell from the above diagram. 9. According to the concept of albedo, open water will reflect light and produce a cooling effect. a) True b) False Page 2

Explanation / Answer

6) In arid regions, the action of _________ grinds away at and poishes exposed rock.

Ans. a. abrasion.

Abrasion is the mechanical process under the action of wind blowing over an open surface which grinds and polishes exposed rocks.

7) The underlying mecanism by which plate tetonics operate is __________.

Ans. c. mantle covection.

This is the action due to which heat is carried from the interior to the Earth's surface. And the mantle convection current is responsible for plate tectonics.

8) In the above diagam which side indicates an increase in the trasport distace ?

Ans. b) to the right.

In the above diagram angularity decreases from left to the right whic indicates increase in the transport distance from left to the right.

9) Accrding to the concept of albedo, open water will reflect light and produce cooing effect.

Ans. False.

Sun light is not reflected by the open water so much resulting a low albedo effect. Where as snow having a high albedo effect, as snow reflects nearly 95% of the solar radiation. So this answer is false.

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