What is a wing crack and how do they form?
What will be an ideal response?
Answer: A wing crack is an extension fracture that shoots off one side of a fracture near its tip zone if the fracture is reactivated in shear (at very small strains). They occur on the extensional side near the tips of the fracture and indicate sense of slip.
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You sit comfortably in your room studying and notice that the air temperature is fluctuating considerably. Perhaps the air conditioning system is not well regulated
Sometimes it gets too hot and you sweat, while other times you get so cold that you shiver. When you are sweating or shivering, you are exhibiting your A) limits of tolerance. B) temperature optima. C) resource range. D) abiotic independence.
The following excerpt is from: Ewert and Miller, June 1995, The USGS/OFDA Volcano Disaster Assistance Program: USGS Open-File Report 95-553. Use the excerpt to answer this question.The strategy employed by the Volcano Disaster Assistance Program (VDAP) is to reduce loss of life and minimize economic disruption. It includes instrumental monitoring to detect the movement of magma (molten rock) toward the surface and thereby forecast eruptions and assessments of volcano hazards and risk based on past eruptive events at a volcano.A great majority of the world's potentially active volcanoes are unmonitored. Less than twenty-five percent of volcanoes that are known to have had eruptions in historical time are monitored at all, and, of these, only about two dozen are thoroughly monitored.
Moreover, seventy-five percent of the largest explosive eruptions since 1800 occurred at volcanoes that had no previous historical eruptions (Simkin and Siebert, 1994). Thus, until regular volcano surveillance is much more widespread, a mobile crisis-response capability is needed to quickly assess hazards and install monitoring equipment when a volcano becomes restless.VDAP sends groups of scientists to active volcanoes about to erupt that also pose a threat to humans.Which one of the magma types listed below is of least interest to VDAP? A. Basalt B. Rhyolite C. Andesite
The earth's climate will not change in response to ____.
A. increases and decreases in volcanic emissions B. plate tectonics C. magnetic pole reversals D. shifting ocean currents E. variations in atmospheric gas concentrations
Judge the following sentence according to the criteria given below: India's Northeast Monsoon provides little precipitation BECAUSE it occurs during the winter
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.