Which of the following is a primary cause of volcanoes earthquakes and mountain building?
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What do the electron configurations for all the group 18 noble gases have in common?
A) They have the same number of electrons. B) They occupy the same number of shells. C) Their outermost occupied shells are filled to capacity. D) all of the above
What is the radius of curvature of the path of a 3.0-keV proton in a perpendicular magnetic field of magnitude 0.80 T?
a. 9.9 mm b. 1.1 cm c. 1.3 cm d. 1.4 cm e. 7.6 mm
Why do astronomers believe that the Jovian planets are composed mainly of hydrogen and helium?
A. Because the Jovian planets have low densities. B. Because hydrogen and helium are the main constituents of the Solar System. C. Because the Jovian planets are very large. D. The Voyager missions measured the chemical compositions of the interiors of the Jovian planets.
The process of transforming sediment into sedimentary rock is called
a. lithification. b. striation. c. metamorphism. d. hardening.