The theory of seafloor spreading is supported by
A. paleomagnetic analysis of the ocean's floor.
B. geological, biological, and climatological data.
C. the change in Earth's polarity.
D. none of the above
Answer: A
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Two identical air-track gliders slide toward each other. One moves at 1 m/s and the other moves at 2 m/s. For an inelastic collision the combined-glider speed will be
A. 3/4 m/s. B. 1/6 m/s. C. 1/2 m/s. D. 1/3 m/s.
Intersect is an overlay method as well as a spatial join option. Will you get the same result from both operations?
What will be an ideal response?
________ are pyroclastic materials that are larger than ash, but smaller than blocks or bombs
A) Pumice B) Scoria C) Lapilli D) Pillow lavas
Scattering caused by atmospheric particles larger than the wavelengths of light is
A) transmission. B) Rayleigh scattering. C) Mie scattering. D) refraction.