Why does the sun and moon both appear to be higher than they really are along the horizon?
Light rays from the lower part of the sun (or moon) are bent more than those from the upper part, the sun and moon both appear to be higher than they are causing both to rise about two minutes earlier and set about two minutes later than they would if there were no atmosphere.
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Which of the following statements about the asthenosphere is not true?
a. It lies beneath the lithosphere. b. It is a rigid rock layer. c. It behaves plastically. d. Partial melting within it generates magma. e. It is surrounded by the upper mantle.
Vilhelm Bjerknes
A) helped discredit the Norwegian cyclone model. B) founded the Norwegian Geophysical Institute. C) developed the polar front theory in order to explain the occurrence of hurricanes. D) was a tragic victim of the fighting in World War I.
Sites of past rock falls or slides are sometimes obvious because they remain unvegetated.
Answer the following statement true (T) or false (F)
Which of the following is TRUE regarding asbestos?
a. improper removal of asbestos can cause further contamination of a building b. asbestos causes health problems only when it is eaten c. the level of asbestos in a building is affected by weather conditions d. HUD requires that all asbestos-containing materials be removed from all residential buildings