Why are large rock samples weaker than small samples of the same rock?
What will be an ideal response?
Ans: Large rock samples are generally weaker because they are more likely to contain larger flaws with orientations that decrease the rock strength more than the flaws in smaller rock samples. Hence it is all a matter of probability
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The largest growing category of solid waste is called _______.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements accurately describes the change in CO2 in the atmosphere since the turn of this century?
A. CO2 has increased in the first half of the century, and decreased in the last half B. CO2 has remained at about the same concentration from year to year C. CO2 has been steadily increasing in concentration D. CO2 has been steadily decreasing in concentration
What is the source of energy that transforms igneous rocks into sedimentary rocks? What is the source of energy that transforms sedimentary rocks into metamorphic rocks?
What is the source of energy that transforms metamorphic rocks into igneous rocks? Are these sources of energy internal or external? Explain. What will be an ideal response?
________ often initiates mass wasting in subarctic and high latitudes
A) Heavy snow B) Cold temperatures C) Short day lengths D) The heaving of frozen groundwater E) Greater gravity nearer the poles