What causes the volcanism at spreading ridges? What will be an ideal response?
Beneath spreading ridges, the temperature of the mantle rock locally exceeds the melting temperature,
at least in part because the pressure decreases as the plates separate at the ridge. Water is also present
in the mantle rock, which decreases the melting temperature beneath the spreading ridge since water
works with heat to break down the chemical bonds in minerals.
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Explain why the surface air on the downwind side of a mountain can be drier than the surface air on the upwind side. What is this effect called? Can you think of a l°Cation in Canada where this might °Ccur?
What will be an ideal response?
The direction of ground-water flow between any two locations in an aquifer is determined by comparing the total ________ of the water at each location
A) elevation B) pressure C) energy D) volume
Name two incentives to invest in renewable sources of energy.
What will be an ideal response?
Describe how the H-R diagram is used to determine which stars are "giants."
What will be an ideal response?