Based on the principle of Baked Contacts, which of the following statements are right?
a. If an igneous intrusion "bakes" surrounding rocks, then the rock that has been baked
must be younger than the intrusion
b. The intrusion geologic feature is younger than the original rock
c. Baked contacts do not provide directly the relative age, because of the later erosion
d. When pluton (one igneous rock) was found to bake the adjacent rock, then this pluton is
relatively younger
e. Both b and d
Ans: e. Both b and d
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How does the wave model of electrons orbiting the nucleus account for the fact that the electrons can have only discrete energy values?
A. Electrons are only able to vibrate at particular frequencies. B. The wave model accounts for the types of orbitals an electron may occupy, not its energy levels. C. The energy values of an electron only occur where its wave properties and probability clouds are mutually reinforcing. D. When an electron wave is confined, it is reinforced only at particular frequencies.
Fog in the United States is least likely to occur in the ________ when vapor pressure is higher and temperatures are ________
A) winter; lower B) winter; higher C) summer; higher D) summer; lower