What is the process zone that is located at the tip of shear fractures?
What will be an ideal response?
Ans: The process zone ahead of shear fractures is a zone or volume of microcracks that soften the rock and eases fracture propagation.
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Which of the following is NOT true about tornadoes?
A. They often form in association with cold fronts and squall lines B. Dry continental tropical air and a strong jet stream aloft increase the chances of their development C. Most of them occur in the United States D. More damage occurs from a severe drop in pressure, rather than winds, so it is advisable to crack open some windows during a tornado
The reason we don't have eclipses monthly is because of the
A. 23° tilt of the Earth's axis. B. different orbital planes for Earth and the Moon. C. relatively close distance of the Moon and Earth. D. tapering of the Sun's rays. E. relatively long distance to the Sun.
Explain (a) the difference between potential and known reserves and (b) why the cost of extracting potential reserves of fossil fuels is often economically prohibitive
What will be an ideal response?
Shield volcanos form from what type of magma?
A) high viscosity rhyolite magmas B) low viscosity basalt magmas C) high viscosity aa basalt magmas D) low viscosity rhyolite magmas