Explain the difference between thermal and chemical convection
What will be an ideal response?
Fluid motion in the outer core is described as chemical convection (density differences caused by composition) and differs from the thermal convection (density difference caused by temperature) that you saw in the lava lamp, soup pot, and the mantle. Although the causes of the density differences required for cDensity of the material
onvection differ for these two types, the resulting motion moves heat along with matter in both cases.
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There is geologic evidence that the earth has experienced many episodes of mountain building and erosion
Indicate whether the statement is true or false
When will an area experience high tide?
A. when the moon is directly overhead or on the opposite side of Earth B. in the early afternoon when water temperatures are highest C. when there is a quarter moon in the sky D. during a period of intense sunspot activity
Groundwater velocity (the rate of movement of ground water) is most strongly influenced by which of the following factors?
A. the slope (gradient) of the water table B. depth to the water table C. presence of wells D. local climate and humidity
What is a stationary front?
A. a cold front that overtakes a warm front B. when neither air mass displaces the other C. a warm front that overtakes a cold front D. when neither air mass is made of cold air E. an occluded front that stops moving