How strong is the electric field about a charged particle at a location twice as far away?
A. One fourth as much.
B. Twice as much.
C. Half as much.
D. The same.
Answer: A
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On a climograph, how is a location’s monthly average precipitation shown?
A. red points B. line C. horizontal bars D. blue E. vertical bars
Which of the following is consistent with the plate tectonic theory?
a. Gravity-driven "ridge push" moves plates at convergent plate boundaries. b. As a plate subducts into the asthenosphere, it pulls the trailing plate along. c. Lunar tidal forces drive continental movement. d. Lithosphere convection drives mantle movement. e. Convection driven by cool rocks rising in the mantle moves the overlaying lithosphere.
Which of the following is a present-day example of a continental rift?
a) the West African rift valley b) the North American rift valley c) the South American rift valley d) the East African rift valley
When an atom undergoes alpha or beta decay, it ____
A)becomes an ion of the same element B)becomes an isotope oh the same element C)becomes a completely different element D)may or may not become a completely different element E)becomes permanently stable