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The Ptolemaic model probably persisted for all these reasons EXCEPT:
it was consistent with the doctrines of the Catholic Church
The Ptolemaic model of the universe:
explained and predicted the motions of the planets with deferents and epicycles
Scientists today do not accept the Ptolemaic model because:
the work of Tycho and Kepler showed the heliocentric model was more accurate
A planet whose distance from the sun is 3 A.U. would have an orbital period of how many Earth-years?
Which was a contribution to astronomy made by Copernicus?
The planets move around the Sun in elliptical orbits
A fatal flaw with Ptolemy's model is its inability to predict the observed phases of
Mercury and Venus
Upon which point do Copernicus and Kepler disagree?
The orbit of the planets are ellipses, with one focus at the Sun
What does Kepler's third law imply about planetary motion?
Planets further from the Sun orbit at a slower speed than planets closer to the Sun
The force of gravity varies with
both product of the two masses and inverse square of the distance separating the two bodies
How much stronger is the gravitational pull of the sun on Earth, at 1AU, than it is on Saturn at 10 AU
The two forms of electromagnetic radiation that penetrate the atmosphere best are:
visible and radio waves
According to Wien's Law, if the surface temperature is increased by a factor of 2, its peak wavelength will
decrease by a factor of 2
Stefan's Law says:
that if the Suns temperature were doubled, it would give off 16 times more energy
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