What is the asthenosphere?
A. It is the surface that separates the crust from the mantle.
B. It is the zone that separates the continental crust from the oceanic crust.
C. It is the same as the Gutenberg Discontinuity.
D. It is in the surface that separates the inner and outer core.
E. It is the zone of weakness in the mantle on which the lithosphere moves.
Answer: E
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Refer to Figure 19.4. Which of the following conclusions cannot be made from the given information?
A) A duck on water will move slightly forward with each wave that passes. B) A duck will move up and down as waves move beneath it. C) The distance that a wave moves an object back and forth as it passes increases as the object gets closer to the bottom of the wave. D) Wave motion does not move water below the wave base.
Mining of aluminum-rich bauxite ore contributes to ________
A) soil fertility B) desertification C) coastal degradation D) soil erosion E) deforestation
Which lobe of your brain are you using when you answer this question?
What will be an ideal response?
Which of the following statements is true about seawater?
A) The salinity of seawater is negligible. B) Seawater is a solution. C) Seawater is pure water (H20). D) Seawater is densest near the surface, with decreasing density at increasing depths. E) The chemical composition of seawater has little spatial variability.