A key characteristic of igneous rocks is that they ____
A)are the youngest rocks on Earth
B)are made up of minerals that crystallized from molten rock matter called magma
C)never contain iron or magnesium
D)are not as hard as sedimentary rock
E)always contain more than three different mineral types
B
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A ________ is described as the elapsed time between the passage of successive wave troughs past a stationary point
A) wave drop B) wavelength C) wave period D) wave height
The desert would be the obvious zone of origin of a(n) ________ air mass
A) mP B) cT C) cP D) mT E) mM
An ecocity is
a. car oriented b. industry oriented c. profit oriented d. people oriented e. family oriented
Suppose the eye of a hurricane passed directly over you, and you survived the experience. If winds were from the northeast as the eyewall first approached you, from what direction did the winds blow when the eyewall reached you the second time?
A) NW B) NE C) SE D) SW