The two most important processes in heating the interiors of the terrestrial worlds are ________
A) (1 ) volcanism; (2 ) tectonics
B) (1 ) heat from convection; (2 ) heat from thermal radiation
C) (1 ) heat deposited by the process of formation; (2 ) heat that came from the gravitational potential energy of incoming planetesimals
D) (1 ) heat deposited by the process of formation; (2 ) heat released by radioactive decay
D
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Quantum theory was developed
A) almost in its entirety by Erwin Schroedinger. B) almost in its entirety by Max Planck. C) almost in its entirety by Albert Einstein. D) by Planck, Schroedinger, Einstein, and many other scientists. E) in its entirety by Planck, Schroedinger, and Einstein.
Which of the following happened first (after the Big Bang)?
A) Molecules formed. B) Neutral atoms formed. C) Protons formed. D) Helium formed.
The air in your room is composed of molecules that have
A) nearly identical speeds. B) a wide variety of speeds. C) no speeds worth mentioning.
Suppose that in an experiment, different results are obtained from a subset than the results obtained from the whole. What term would best explain this?
a. probability b. trend c. variable d. statistically significant e. sampling error