Some people wear bandanas soaked in water to keep cool during the summer. How does this process work?
What will be an ideal response?
As the water in the bandana evaporates, the heat is absorbed by the vapor. The result is a cooling effect on the skin.
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While driving along the highway at a constant speed of 60 km/h you apply the brakes until the car slows to 40 km/h. When you suddenly release the brakes, the car tends to
A. continue moving at 40 km/h. B. decrease in speed if no other forces act. C. momentarily regain its higher initial speed. D. need more information
In Latin America, which of these is NOT an example of a syncretic religious practice
A. Candomble B. Gaelic C. Voodoo D. Santeria
Which of the following does not characterize frontier science?
a. It often captures news headlines because it is controversial. b. It may deal with preliminary data. c. It may eventually be validated. d. Scientists always agree on the meaning and accuracy of the data involved. e. It may eventually be discredited.
How do the actions of plants and animals affect weathering?
A. Their actions result in a net neutral effect on weathering. B. They fill up existing spaces with roots and nests, decreasing the rate of weathering. C. They enlarge cracks and openings, allowing for more chemical weathering.