QUESTION 6 An example of mechanical weathering is ________. Rock salt dissolving

Question

QUESTION 6

An example of mechanical weathering is ________.

Rock salt dissolving

Mica minerals reacting to form clay

Frost wedging

None of the above

1 points   

QUESTION 7

Sedimentary rocks that are precipitated from solution may have a crystalline or a ________ texture.

Non-crystalline

Macrocrystalline

Microcrystalline

Megacrystalline

1 points   

QUESTION 8

Sedimentary have characteristics that reflect the environment in which they were formed.

True

False

1 points   

QUESTION 9

Which of the following are minerals that commonly occur in sedimentary rocks? (Select all that apply.)

Quartz

Pyroxene

Calcite

Hematite

1 points   

QUESTION 10

Which of the following is NOT an environment where sedimentary rocks form?

Shallow sea or reef

Magma chamber

Rivers

Deserts

Rock salt dissolving

Mica minerals reacting to form clay

Frost wedging

None of the above

Explanation / Answer

QUESTION 6
An example of mechanical weathering is ________.
Answer: Frost wedging
When water freezes, it expands about 9 percent of its volume, in nature water enters into cracks of rocks. Upon freezing it expands and exerts great pressure on the walls of cracks. As a result, the rock breaks into pieces.

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