Which is not necessarily a characteristic of a red giant?
a. The engulfing of inner planets
b. The expansion of atmosphere
c. Becoming a supernova
d. Materials sent into space from shattering
ANS: C
Not all red giants are large enough to become a supernova. When our sun begins to die, it likely will
not become a supernova. It will engulf planets and expand its radius. The pieces sent into space are to
be recycled. Information can be found in the section What Will be the Future of Earth.
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Under an evolutionary classification system, species are grouped together based on
A) shared similarities. B) how closely related they are to one another. C) their position in a hierarchy from "simple" to "complex." D) none of the above
If you were designing a rock that would be easily weathered, which of the following characteristics would it have?
A. a limestone in a wet climate B. a soluble chemical composition C. a rock composed of abundant pieces D. closely spaced fractures E. All of these.
The albedo of snow is generally low, while that of an evergreen forest is relatively high
Indicate whether the statement is true or false
Our sun is one of ________ (of) stars in the Milky Way Galaxy
A) hundreds B) thousands C) hundreds of thousands D) a few million E) many billions