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Cubangbang #149620
Cubangbang 8th Ch.2 The Earth's Motions Stack #149620
| Question | Answer |
|---|---|
| This theory claims that the earth is at the center of the universe | geocentric theory |
| According to the geocentric theory, a planet did not orbit with the earth exactly at the center of its circular path. A circular path around an object located at the at a point other than the center of the circle | eccentric orbit |
| The man who probably played the largest role in attempting to improve the geocentric theory | Ptolemy |
| The main crystal spheres on which planets travel; proposed in the geocentric theory | deferent |
| A modification to the geocentric theory to account for the temporary backward movement of the planets | epicycle |
| Two major objections to the geocentric theory | inaccuracy and complexity |
| This brought a rebirth of interest in culture including science | Renaissance |
| According to this theory, the sub is the center of at least the solar system | heliocentric theory |
| An astronomer who played a major role in the development of the heliocentric theory | Nicholas Copernicus |
| The sun and all other heavenly bodies that revolve around it | solar system |
| To an observer on Earth, another planet may seem to go backward in its orbit because the earth is traveling ____ in its orbit than the other planet | faster |
| The Christian astronomer who formulated the three laws of planetary motion | Johannes Kepler |
| Kepler’s major contribution to the Copernican heliocentric theory about the planets orbits | elliptical orbits |
| Kepler believed that the primary goal of science is | to lead men to God |
| The first person to use a telescope for astronomy | Galileo |
| The English mathematician and scientist who formulated the law of universal gravitation | Isaac Newton |
| Described the forces of attraction between masses of objects; force that holds planets in their orbits | universal gravitation |
| Three physical factors that determine the force of gravity | the mass of one of the objects, the mass of the other object, the distance between their centers of mass |
| The more massive a body is, ________ it has for another body | greater gravitational attraction |
| If more massive heavenly bodies orbited less massive bodies, this would contradict | the law of gravity |
| Earth’s movement around the sun | revolution |
| Earth revolves around the sun and rotates on its | axis |
| The line defined by an object’s rotation | axis |
| The tendency for bodies in motion to remain in motion in the same direction at constant speed | inertia |
| Earth is flattened at its | poles |
| Earth is bulged at its | equator |
| Of all the planets, why are Jupiter and Saturn the most bulged at the equator | fastest spinning planets |
| Deflection of projectiles and the winds show that the earth is | rotating |
| The Foucalt pendulum would not be deflected at all if it were located here | equator |
| Evidence of the earth’s rotation is found in | diagonal wind patterns, earth’s bulging equator, behavior of a Foucault pendulum |
| Most recent evidence that established that the earth moves and not the sun | direct observation |
| How was the earth’s rotation observed directly | astronauts on the moon saw the earth’s entire surface in each twenty four hour day |
| The path the sun appears to follow among the stars | ecliptic |
| The angle between the earth’s axis and a line perpendicular to the plane of its orbit | 23.5 degrees |
| During summertime in the Northern Hemisphere, the North Pole is | tilted towards the sun |
| Could be used as evidence of the earth’s revolution | occurrence of seasons |
| When it is summer in the Northern Hemisphere, it is ____ in the Southern Hemisphere | winter |
| A day in which the sun’s overhead noon position appears to be directly above the equator | equinox |
| How do day and night compare on the dates of the equinoxes | day and night are equal lengths in all parts of the earth |
| A day which the apparent movement of the sun reaches its northern-most or southern-most limit | solstice |
| The apparent shift in position caused by a change in the position of observation | parallax |
| These are observed more often on the leading side of the earth in its orbit | meteors |
| An astronomer’s observations and the theories he suggests depend on | vantage point in the universe |
Created by:
jcubangbang
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