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Origins of Astronomy Test 74 pts test B Ms. Rip Earth Science 10 Honors
Terms in this set (27)
Galileo invented the telescope
The geocentric model accounts for phase changes of Venus and the apparent changes in diameter of the Moon and planets
The proposal that contends that the Sun is in the center of the universe is called the heliocentric view
Ptolemy's geocentric model was rejected after about 100 years
According to the third law of planetary motion, the period of revolution of a planet is related to the planet's______________
Distance to the Sun
P^2=D^3, Using Kepler's third law, determine the period of a planet whose solar distance is 26 AU
In the Ptolemaic model of the universe,___________
Earth was the center of the universe
Using Tycho Brahe's data, which scientist proposed three laws of planetary motion?
Which law states that each planet revolves so than an imaginary line connecting it to the Sun sweeps over equal areas in equal time intervals?
The second law of planetary motion
If the distance between foci is equal to 40mm and the major axis measures 65mm what is eccentricity of this planet:
Which of the following was unknown to the ancient Greeks?
Which scientist discovered that Venus has phases, just like the Moon?
What is the shape of a planet's orbit?
The apparent westward movement of a planet against the background of stars is called_______________
The first early astronomer to propose a sun-centered solar system was______________
Earth is closest to the sun at a point is called________
A measure of the total amount of matter an object contains is called____________
One astronomical unit averages about_________-
93 million miles
The actual orbits of the planets are______________
Elliptical, with the Sun at one of the foci
The eccentricity of this orbit is approximately__________
According to the ancients, the stars traveled around earth on the transport, hollow_________
Which planetary model allows a scientist to predict the exact positions of the planets in the night sky over many years?
The planets' orbits are ellipses in a heliocentric model
Which scientist was the first to use the telescope in astronomy?
A problem with the geocentric model is that some plants seem to move backward. Ptolemy resolved this problem bye introducing the idea of__________
Which ancient astronomer developed a geocentric model of the universe explaining the overavle motions of the planets?
The equation for the gravitational force between two objects is F0c G mass1 X mass 2
Doubling which factor would bring about the greatest change in force?
Which scientist determined the nature of the forces that keep the planets in their orbits?
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