Which statement about the asthenosphere is false?
a. It lies beneath the lithosphere.
b. It is a rigid rock layer.
c. It behaves plastically.
d. It acts like a lubricating layer allowing plates to move.
e. It has the same composition as the lower mantle.
b
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Some incoming solar radiation is reflected back into space. Which of the following situations would result in the most reflection of incoming solar radiation?
A. cloudy skies over Antarctica B. clear skies over the rainforest C. cloudy skies over the rainforest D. clear skies over Antarctica
Which would you expect to have a higher melting point: sodium chloride, NaCl, or aluminum oxide, Al2O3?
A) The aluminum oxide has a higher melting point because it is a larger molecule and has a greater number of molecular interactions. B) NaCl has a higher melting point because it is a solid at room temperature. C) The aluminum oxide has a higher melting point because of the greater charges of the ions, and hence the greater force of attractions between them. D) The aluminum oxide has a higher melting point because of the covalent bonds within the molecule.
What is a locally rich concentration of minerals that can be mined economically and is legally
recoverable with existing technology? a. ore b. ore minerals c. mineral deposits d. mineral reserves e. vein
Which of the following cause ground water to flow?
A) kinetic energy and pressure B) volume and elevation C) elevation and potential energy D) potential energy and pressure