Light that is blue shifted has wavelengths that are
A. contracting.
B. out of phase.
C. inverted.
D. lengthening.
Answer: A
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The main colonizers in the South Pacific Islands were the
A. French B. Americans C. British D. Germans
A polymorph can be defined as
A) a set of silicate minerals. B) minerals that have the same chemical formula, but different crystal structures. C) minerals that have the same crystal structure, but different chemical formulas. D) minerals that have the same chemical formula and crystal structure, but exhibit different physical properties.
The surface of Earth is usually divided into four categories of landforms: plains, mountains, hills, and ________
A) volcanoes B) islands C) plateaus D) river valleys
Why does a plume of contamination spread out (become wider) away from the source of contamination?
A. because of diffusion of the contamination and mixing of contaminated and uncontaminated water B. it does not spread out away from the source C. it will only spread out if it is close to a cone of depression D. because the water flows faster and faster