The Pacific Ocean plays a key role in climate
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All oceans, including the Pacific, play a major role in Earth's climate. There are
thermohaline circulation, the El Niños, evaporation over oceans, etc.
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Rank the following 4 items by how long it takes for light to reach us from these objects, from shortest to longest
A) Pluto, Sun, the Andromeda Galaxy, center of the Milky Way B) Sun, Pluto, center of the Milky Way, the Andromeda Galaxy C) the Andromeda Galaxy, the center of the Milky Way, Pluto, Sun D) Pluto, Sun, center of Milky Way, the Andromeda Galaxy E) Sun, Pluto, the Andromeda Galaxy, center of the Milky Way
Which of the following best describes what would happen if a 1.5-solar-mass neutron star, with a diameter of a few kilometers, were suddenly (for unexplained reason) to appear in your home town?
A) The combined mass of Earth and the neutron star would cause the neutron star to collapse into a black hole. B) It would rapidly sink to the center of Earth. C) The entire Earth would end up as a thin layer, about 1 cm thick, over the surface of the neutron star. D) It would crash into Earth, throwing vast amounts of dust into the atmosphere that, in turn, would cool the Earth; this is probably what caused the extinction of the dinosaurs.
What power (in diopters) of corrective contact lens is required to correct the vision of a myopic eye whose far point is at 170 cm?
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The energy in the Sun's core is produced by
A. the chemical reaction of hydrogen and helium. B. the release of gravitational potential energy. C. the fusion of hydrogen to helium. D. radioactive decay.