TASK DEFINITION: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
PROBLEM: Erwin Finlay-Freundlich proposed one explanation for this phenomenon that claimed its strength should be proportional to the radiation density. A version of this phenomenon in the CMB is known as the Sachs-Wolfe effect, while the quantity that describes the strength of this effect has a value of about 1100 for the surface of last scattering. One version of this effect was measured using the Mossbauer effect in an experiment by Pound and Rebka, and the magnitude of this effect is usually denoted "z. " For 10 points, name this phenomenon, which can be caused by gravity or the Doppler effect, in which the wavelength of an object's light appears longer to an observer.

SOLUTION: Science

PROBLEM: Even though the voting in this nation occurred on March 29, the results have still not been provided, especially since a High Court hearing has officially requested a recount in a number of provinces. The election has been fraught with bad news for the incumbent, with a split ruling party divided through the rise of Simba Makoni and the rise in inflation far above 1,000%. Thus, Morgan Tsvangirais MDC party has been widely declared the winners both in the parliamentary and presidential struggle. FTP; name this nation who may soon see the unseating of their current ruler, Robert Mugabe.

SOLUTION: History

PROBLEM: This country's town of Batopilas once contained lucrative silver mines. Multiple classical capital cities in this country have gone by the title "Tollan," meaning "among the reeds." This country and its northern neighbor engaged in the long-simmering Chamizal border dispute over land created by a shifting riverbed. The Fuertes River cuts through Copper Canyon in this country, whose citizens call the river demarcating much of its northern border the Rio Bravo del Norte. The Pyramids of the Sun and Moon and the Avenue of the Dead are found in this country's ancient city of Teotihuacan. For 10 points, name this country home of the cities of Guadalajara and Cancun.

SOLUTION:
Social Science