In the nebular hypothesis, each planet is formed from which of the following? w) a comet x) a number of moons y) a passing star z) a ring of gas Answer : ANSWER: Z -- A RING OF GAS...
According to the protoplanet hypothesis, the solar system begins as which of the following? w) a star x) a vacuum y) a huge cloud of dust and gas z) a group of comets. Answer : ANSWER: Y -- A HUGE CLOUD OF DUST AND GAS...
What causes the gas tail of a comet to always point away from the sun? w) solar wind x) air pressure y) centrifugal force z) gravity Answer : ANSWER: W -- SOLAR WIND...
Our sun is a w) protostar x) main-sequence star y) variable star z) dwarf star Answer : ANSWER: X -- MAIN-SEQUENCE STAR...
The sun makes up approximately what percent of matter in our solar system? w) 17% x) 50% y) 85% z) 99% Answer : ANSWER: Z -- 99% ...
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