Chapter 7-1 Homework MULTIPLE CHOICE. Choose the one alternative that best compl
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Chapter 7-1 Homework MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) How does the Sun's mass compare with that of the planets? A) It is a hundred times more massive than Earth. B) It is about as massive as all the planets combined C) It is a thousand times more massive than all the planets combined. D) It is a thousand times more massive than Earth E) It is a hundred times more massive than all the planets combined. 2) Where does nuclear fusion occur in the Sun? 2) A) on the surface B) in its core C) anywhere below the surface D) just above the visible surface E) all of the above 3) Which planet has the highest average surface temperature, and why? 3) A) Venus, because of its dense carbon dioxide atmosphere B) Mercury, because it is closest to the Sun C) Mars, because of its red color D) Jupiter, because it is so big E) Mercury, because of its dense carbon dioxide atmosphere 4) D) tarm 4) The most metal-rich terrestrial planet is A) Mars. E) Mercury. 5) Which planet, other than Earth, has visible water ice on it? 5) A) Mars B) Mercury Venus D) the Moon E) Jupiter 6) Pluto is different from the outer planets in all of the following ways except which one? 6) A) It doesn't have rings. B) It is made mostly of ices. C) lts surface temperature is very cold. D) It has few moons. E) Its orbit is not very close to being circular. 7) Which of the following is furthest from the Sun? 7) A) Neptune B) a comet in the Oort cloud C) an asteroid in the asteroid belt D) a comet in the Kuiper belt E) PlutoExplanation / Answer
Answer 1 : It is thousand times more massive than all planets combined
Explanation: The sun mass is 9*10^30 kg and mass of all planets combined is 3^10^27 so there ratio is in 1000
Answer 2 : In the core where heat produced and supplied to the surface of the sun layer above the core called radiation layer.
Answer 3 : In the venus
Explanation: Venus has Carbon dioxide which causes greenhouse and makes the planets warmer all time. However, mercury even closest to sun but due to absence of C02 isn't able to sustain high temp and at daytime temp is 600 and nigh -250 which is averagely less than Venus
Answer 4: Earth, since its core is largest than any other terrestrial planet and core, is the main part of the planet where all metal accumulates.
Answer 5: Mars
mercury and venus don't because of high temp and moon don't have water at all to form ice.
Answer 6: E
answer 7: an asteroid in Oort cloud.
Oort cloud is outermost part of solar system comes after Kuiper belt. Hely comment belongs to Oort cloud asteroid.
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