Directions: Read and analyze the statements below. Encircle the letter of the correct answer.

1.) Which of these statements are true about mechanical weathering?
1. breaks rock material into smaller pieces
2. changes the chemical composition of rocks
3. moss growing on the wall fence creates crack on the walls
4. beach rock gets hot in daytime and cools in the evening thus creating fractureon the rock

a. 1 and 2 b. 1 and 3 c. 1 and 4 d. 2 and 3

2. Which of the following activities has resulted in an increased rate of chemical weathering through acidification?

a. The production of SO2 and NO in the atmosphere that combine with rain to form acids.
b. The release of too much carbon dioxide in the air that turn rain into weak acid.
c. The disintegration of rocks during construction and mining
d. The growth of plant roots on the rock crack.


3. Which is not included in the group?

a. abrasion b. acidification c. carbonation d, hydration


4. In which of the following climates will chemical weathering be most rapid?


a. hot and dry b. cold and dry c. hot and humid d. cold and humid


5. Which of the following do not describe weathering?

l. The process by which rocks are broken during severe weather
II. The process by which rocks are formed by heat and pressure
III. The mechanical or chemical process by which rocks are broken down
IV. The process by which rocks are chemically strengthened due to exposure to heat and pressure

a. I, II and III b. I, II and IV c. I, III and IV d. II, III and IV

6. How does gravity contribute to weathering?

a. by expansion of rocks
c. by creating holes in rocks
b. by abrasion of the rocks
d. by splitting rocks particles
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