Evaluate the statement, "All lahars are mudflows, but not all mudflows are lahars."
What will be an ideal response?
Answer: Mudflows in general are defined as a rapid form of mass wasting involving a flow of soil and regolith containing a large amount of water. Generally, flows are distinguished from debris flows by particle size, since mudflows are generally fine-grained. However, mudflows in general do not necessarily have anything to do with volcanoes or volcanic materials. Lahars are mudflows generated by volcanic processes and/or composed of volcanic materials, such as ash.
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Siberian Express is the term used when:
A) an mP air mass from the north Atlantic enters New England and generates snowfall. B) an unusually cold air mass enters the Rocky Mountains. C) a modified air mass originating in Siberia reaches the Pacific Northwest. D) an outbreak of bitterly cold air from Canada intrudes over a large part of the United States.
A port hinterland is the area served by a port
Indicate whether the statement is true or false
Winters are generally mild in which climate?
a. highland b. ice-sheet c. subarctic d. humid continental, hot summer
what relates to absolute dating
a. a fossil in upper roach strata is more recently formed than a fossil in lower rock strata b the farther down a fossil is found, the longer ago the organism lived c. a fossil has undergone 2 half lives of a radioactive isotope d. a fossil analyzed with radiometric dating e. age of a fossil is found to be 61.1 million years old f. one fossil is found to be "older: than another fossil