Why is perspiration an effective means of cooling human skin?
What will be an ideal response?
ANSWER: An appropriate answer would be that evaporation is a cooling process, so when the air temperature is high and the relative humidity low, perspiration on the skin evaporates quickly, often making us feel that the air temperature is lower than it really is. However, when both the air temperature and relative humidity are high and the air is nearly saturated with water vapor, body moisture does not readily evaporate; instead, it collects on the skin as beads of perspiration. Less evaporation means less cooling, so we usually feel warmer than we did with a similar air temperature, but a lower relative humidity.
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What type of rock is formed from a pre-existing parent that has been subjected to a change in its environment?
Which of the following is data (meaning actual observation) rather than an interpretation?
a) some trees along Yellowstone Lake were flooded when the land north of the lake rose because of magma at depth b) rising and sinking of the land around Yellowstone is related to underlying magma c) the ages of volcanic centers near Yellowstone indicate that North America is moving southwest over the mantle d) all of the above are data rather than interpretations e) all of the above are interpretations rather than data
Absolute zero is equal to ____
a. 0? Fahrenheit b. 0? Celsius c. 0? Kelvin d. 0? Latitude
What term describes a groundwater system in which water in a well rises above the top of the aquifer without use of a pump?
What will be an ideal response?