Fairbanks, Alaska (65°N), has more hours of daylight in June than Miami, Florida (26°N)
Indicate whether the statement is true or false
TRUE
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How does mineral cleavage differ from mineral fracture?
There are several types of fracture, but only one type of cleavage. There are several types of cleavage, but only one type of fracture. Cleavage occurs when all of the chemical bonds within the mineral are equally strong in all directions, whereas fracturing occurs when the chemical bonds are weaker in one or two directions than the remaining direction(s). Mineral cleavage is the mineral's tendency to break into uneven surfaces, whereas mineral fracture is the mineral's tendency to break along flat, even planes. Mineral cleavage is the mineral's tendency to break along flat, even planes, whereas mineral fracture is the mineral's tendency to break into uneven surfaces.
The upper mantle and the crust of Earth together constitute the ____________________
Fill in the blank(s) with correct word
Which of the following is NOT a result of acid deposition?
A) Release of aluminum and magnesium from clay mineral in soils B) Formation of highly toxic methylmercury in acidified lake waters C) Increase in nutrients in forest ecosystems D) Acidification of lakes
Which of the following material properties will not result in a seismic velocity anomaly when using seismic tomography?
A) Confining pressure B) Composition C) Temperature D) Water content