Dark-line (absorption) spectra can be used to identify the elements present in stars
Indicate whether the statement is true or false
TRUE
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Why is China's urban system such a good example of Central Place Theory?
A) because China's urban system is balanced, with sizable cities relatively evenly spaced and no city overshadowing others B) because China's urban system uses straight lines for roads all leading into the central plaza of the city C) because China's urban system was carefully planned by the country's communist leaders based on Central Place Theory D) because China's urban system has a primate city in each of its provinces E) because China's urban system is constantly expanding into the rural hinterlands
Both Earth and the Sun can be treated as blackbodies
a. True b. False
What makes Earth unique from other planets and moons in our solar system?
A)It did not form by accretion. B)It is the only planet known to have water. C)It is the only known planet to currently have liquid water. D)It is the only planet with water vapor in its atmosphere. E)It formed much later than other planets, allowing for the presence of liquid water.
Briefly explain radiative equilibrium