Metamorphic foliation is
A) the same as sedimentary layering.
B) the prominent orientation of recrystallized minerals.
C) caused by the interaction with chemical fluids.
D) a layered appearance caused by mineral growth perpendicular to direction of pressure.
Answer: D
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Why does Titan have such a nitrogen-rich atmosphere?
A) It was formed that way in the solar nebula. B) The nitrogen comes from the breakup of ammonia (NH3 ) by solar radiation and subsequent thermal escape of the hydrogen. C) The nitrogen was formed from the chemical reaction of sulphuric acid with surface rocks. D) Through the impact of nitrogen rich comets during the early solar system. E) The nitrogen was created through a chain of fusion reactions in Titan's core.
Gluons can emit
A. electrons. B. protons. C. gravitons. D. baryons. E. gluons.
Displacement divided by time gives
a. average acceleration. b. average velocity. c. average speed. d. average distance.
The curvature of spacetime around a black hole is so extreme that outward-going signals cannot escape
Indicate whether the statement is true or false