The capture of too few solar neutrinos by Davis in the solar neutrino experiment
a. has been disproved by the results of later experiments.
b. can be explained if the sun is not undergoing thermonuclear fusion of hydrogen in its core.
c. indicates that the sun's core is much hotter than expected.
d. indicates that the sun's core is convective.
e. none of the above
Question 2Why did Galileo's observations of moons orbiting Jupiter disagree with geocentric model of the universe of his time?
a. The moons moved in non-circular orbits about Jupiter.
b. The moons did not appear to orbit the Sun.
c. The moons did not appear to orbit the Earth.
d. The moons appeared to be too small, and therefore too far away, to be considered part of the solar system.
Question 3In the proton-proton chain
a. no neutrinos are produced.
b. energy is released because a helium nucleus has a greater mass than a hydrogen nucleus.
c. no photons are produced.
d. carbon serves as a catalyst for the nuclear reaction.
e. energy is produced in the form of gamma rays and the velocity of the created nuclei.
Question 4Which of the following statements best describes Kelper's 3rd law of planetary motion?
a. The smaller the diameter of a planet, the faster its rotational period.
b. The orbital period of a planet directly proportional to the diameter of the planet.
c. The smaller the orbit, the longer its orbital period.
d. The larger the orbit, the longer its orbital period.
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