Is it always possible to identify the parent rock when looking at a metamorphic rock? Why or why
not? What will be an ideal response?
In some cases the original rock can be recognized because the changes are minor. Often the changes
are so great that the original rock cannot be determined, since new minerals and/or a new texture may
appear.
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What unusual situation can occur in the absence of condensation nuclei?
A) adiabatic warming B) a relative humidity of more than 100% C) cumulonimbus clouds D) cirrostratus clouds
For a given latitude, if the stated time of sunrise is 6:10 a.m. at 120°00' W, what is the time of sunrise at 117°30' W?
What will be an ideal response?
A relatively small group that has broken away from an established church is a
A) branch. B) denomination. C) sect. D) dialect. E) family.
Which of the following is true?
A) Natural sources of pollution do not produce a greater volume of pollutants than human-made sources. B) Natural sources of air pollution provide no reason for concern. C) Natural sources of air pollution are not a concern in terms of human health. D) Natural sources of air pollution are a relatively new occurrence. E) Though infrequent, natural events that produce air pollution may cover large areas.