How do sedimentary cores from the ocean floor support the concept of seafloor spreading?
What will be an ideal response?
Sedimentary cores show patterns of magnetized rock thanks to the natural compass properties of magnetite. The cores from either side of the ocean ridge have patterns that match both in strata thickness and in paleomagnetism.
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Describe a stationary front and an occluded front
What will be an ideal response?
Which district in the North American Manufacturing Belt has a number of its cities located along the Erie Canal?
A) the central New York and Mohawk River valley B) Western Great Lakes, running from Detroit to Chicago C) Pittsburgh-Cleveland-Erie D) Middle Atlantic, including metropolitan New York E) southern New England, especially Boston
This cloud sometimes resembles mare's tails
A) cirrus B) altostratus C) nimbostratus D) cumulonimbus E) cirrostratus
Which one of the following is an ecosystem service?
A) global warming B) genetically modifying food C) erosion D) pollination of crop plants E) creation of pollution