When a beam of white light passes through a glass prism, it is separated into its component colors. What is this called?
A) diffraction
B) dispersion
C) selective scattering
D) iridescence
B
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Soils high in organic matter and soluble minerals have attracted farmers to _______________ climate regions, but dry cycles can cause crops to fail year after year
Fill in the blank(s) with correct word
Ecological diversity is a measure of the number of
A. Different versions of the same gene in an ecological community B. Different kinds of organisms within a community or ecosystem C. Niches, trophic levels, and ecological processes of a biological community D. Sizes, colors, and shapes of organisms within an ecological community E. Different species in an ecosystem
A ball is tossed straight upward at 40 m/s with no air resistance. One second after it reaches the top of its path its speed is
A. zero. B. 10 m/s. C. 20 m/s. D. 30 m/s
Why are rocks rich in feldspar and silica called felsic?
A) Felsic is the Latin word that means rich in feldspar and silica. B) Felsic is the opposite of mafic. C) Felsic comes from feldspar and silica. D) Felsic is the opposite of ultramafic.