Describe how to test for soil coarseness.
What will be an ideal response?
To test for coarseness, all soil particles larger than 3 in. in diameter are removed from the sample. The remaining particles are separated through a No. 200 sieve, which permits the smallest particles that can be seen by the naked eye to pass through. If more than 50 percent of the sample by weight does not pass through the sieve, the sample is a coarse-grained soil. The coarse sample is then divided into particles larger and smaller than 1/4 in. (6 mm). If more than 50 percent of this sample by weight is larger than 1/4 in. (6 mm), the sample is classified as gravel. If more than 50 percent by weight is smaller than 1/4 in. (6 mm), the sample is classified as sand.
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Theodore Roosevelt's aggressive involvement in the Panamanian revolt had the general international effect of
A. making other nations reluctant to use the Panama Canal. B. sparking revolts against American rule in Puerto Rico and the Virgin Islands. C. allying the United States closely with Britain. D. sparking revolts against European colonial rule and influence in Central America and the Caribbean. E. increasing anti-American sentiment throughout Latin America.
Which of these animals emits the greatest amount of ammonia into the atmosphere?
a. pigs c. poultry b. cattle d. sheep
Waste oil burners may need to be upgraded to accommodate which maximum grade of oil?
A) B4 B) B5 C) B3 D) B2
A peak detector's output continually changes based on the input
Indicate whether the statement is true or false