Instructions: Choose one answer from each pair of selections. As light travels from a less-dense substance and enters a more-dense substance at an angle, the light bends TOWARD | AWAY from the normal
TOWARD
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If experimental findings are not reproducible,
A) the results are not considered valid. B) the results are considered valid, but not usable. C) it is an indication of scientific fraud. D) it is an indication that the scientific method was not followed.
Water flows into the cracks in a boulder and freezes. The water expands and pushes the rock apart. What surface process is this?
A) differential weathering B) fast weathering C) mechanical weathering D) chemical weathering
The generation of electrical power
A) consumes nearly 75% of the fossil fuels in the United States. B) has steadily declined over the last 20 years as energy efficient products have come on the market. C) depends upon a primary energy source such as coal or hydropower. D) consumes more than half of all the oil used annually by the United States.
Two types of alpine glacier are _____
a. ice caps and cirque glaciers b. valley glaciers and cirque glaciers c. ice sheets and piedmont glaciers d. ice caps and piedmont glaciers e. ice caps and valley glaciers