How does silica content affect a volcano?
What will be an ideal response?
It controls the lava type which can tell you the type of eruption and how high of viscosity the volcano has
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A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30° relative to the normal. If the index of refraction of water and glass are 1.33 and 1.5, respectively, at what angle (in degrees) does the light leave the glass (relative to its normal)?
a. 26 b. 35 c. 42 d. 22 e. 48
An ideal gas is allowed to undergo a free expansion. If its initial volume is V1 and its final volume is V2, the change in entropy is
a. nR ln (V2/V1) b. nRT ln (V2/V1) c. nk ln (V2/V1) d. 0 e. nR V2/V1
The most common igneous rock is formed from
A) basaltic magma. B) andesitic magma. C) granitic magma. D) none of these
Which of the following would be true about solar eclipses if the Moon's orbital plane was exactly aligned with the ecliptic plane?
A) Solar eclipses would be rarer. B) Solar eclipses would occur more often. C) Solar eclipses would last much longer. D) Solar eclipses would be both rarer and would last much longer. E) Solar eclipses would both occur more often and would last much longer.