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ASTRO 1 EXAM 3 NEWEST 2025 ACTUAL EXAM
COMPLETE 100 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
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Which of the following is not a characteristic that worlds in our
solar system have in common:
that the planets all revolve around the Sun in the same direction that most of the planets spin in the same direction that they revolve that many of the larger moons go around their planets in the same direction that the planets' orbits lie in roughly the same plane that all the planets have solid surfaces on which we can see impact craters - CORRECT ANSWER -that all the planets have solid surfaces on which we can see impact craters
Astronomers now believe that the differences in composition among the planets reflect what characteristic in the early solar
system:
orbital speed temperature 1 / 4
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whether or not a planet had rings the age of the material none of the above - CORRECT ANSWER -temperature
A type of planet that our surveys of exoplanets are revealing around other stars, but we don't have any examples of around
the Sun are:
terrestrial planets jovian (giant) planets Super-Earth's dwarf planets you can't fool me, we have examples in the solar system of all the types of planets our exoplanet surveys are revealing - CORRECT ANSWER -Super-Earth's
Today we realize that the source of energy for the Sun is a process called nuclear fusion Kelvin-Helmholtz contraction mechanical to thermal energy conversion radioactivity dilithium crystal moderation - CORRECT ANSWER -nuclear fusion 2 / 4
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In the formula E=mc2, the letter c stands for the speed of sound the speed of an electron around the nucleus the amount of energy contained in one hydrogen nucleus the energy of a neutrino emerging from the Sun the speed of light - CORRECT ANSWER -the speed of light
Where in the Sun does fusion of hydrogen occur?only in the core only near the photosphere (its visible surface layer) pretty much throughout the entire body of the Sun only in the layer where there is a lot of convection going on nowhere - CORRECT ANSWER -only in the core
The material inside the Sun is in the form of a solid liquid plasma ball of iron atoms none of the above - CORRECT ANSWER -plasma 3 / 4
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When energy is first produced by fusion deep in the core of the star, that energy moves outward mostly by what process?convection radiation conduction theoretical modeling none of the above - CORRECT ANSWER -radiation
You are out on the beach, enjoying the warm sunshine with friends. As you glance up at the Sun (only briefly we hope), the
part of the Sun that you can see directly is called its:
corona photosphere chromosphere core heliopause - CORRECT ANSWER -photosphere
Loops of ionized plasma that connect sunspot pairs are called coronae spicules plages
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