ASTR 1000 -188 Final Exam Questions Containing Correct Answers|35 Pages

_______ defines the particulars (wind, clouds, temperature, etc) at a place and time, while ______ is the long term average of these measurements. - ️️1. Weather 2. Climate A 20,000K temperature star emits _____ red light than a 2,000K temperature star. Less More - ️️More A circular orbit is a form of elliptical orbit with zero eccentricity. (A) True (B) False - ️️(A) True A comet entering the inner solar system from afar will __________. Form a tail and some time later form a coma Form a coma and some time later form a tail Always form a tail, but only sometimes form a coma - ️️Form a coma and some time later form a tail. - The coma consists of dust and gas released from the comet as it is heated by the Sun. Only later, as the solar wind affects the comet, does material from the coma extend out to form a tail. A comet's plasma tail always points directly away from the Sun because __________. Of pressure exerted by the fast-moving charged particles in the solar wind Centrifugal forces throw the tail outward as the comet travels around the Sun The comet's nucleus overheats on the Sun-facing side, forcing energetic jets of gas to shoot out from the dark side The tail is left behind as the comet moves through its orbit - ️️Of pressure exerted by the fast-moving charged particles in the solar wind