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31 Cards in this Set
- Front
- Back
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Copernicus
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Observed the motions of the planets and the writing of Ptolemy.
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Foucult
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Scientist that created the Foucult Pedulem. Hung a 67 m wire in the dome of the Pantheon in Paris.
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Galileo
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-First person to use a telescope for astronomy
-First to see moons of Jupiter and rings of Saturn -Tried by Catholic inquisition for promoting the helocentric theory |
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Kepler
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-Proved mathmatically that the orbits of the planets are elliptical
-Formulated laws of planetary motion -Wrote a book called New Astronomy |
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Newton
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-Formulated the laws of gravity
-Accoriding to tradition, was inspired by an apple falling from a tree |
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Ptolemy
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-Greek philosopher and astronomer who lived in the 2nd centry AD
-Attempted to improve the earth centered theory of the solar system |
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Tycho
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-Considered to be the most accurate astronomical observers
-Observed very precise positions of stars and planets |
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Parallax
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-An apparent shift in position of an observed object caused by by a change in the point of observation
-Used to measure the distance from the earth to the stars -Irrefutable proof of earth moving around the sun |
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Equator
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The imaginary line in the middle of the earth
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Revolution
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To revolve around a point that does not lie within an object, as a planet around a sun
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Ecliptic
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-The apparent path of the sun among the stars
-Plane of the earth's orbit |
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Rotation
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-To spin on an axis that passes through the center of an object
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Equinox
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Either of 2 days during the year when the sun's noon position is directly above the equator
-Day and night are approximately equal in all places of the earth -There are 2 types of equinoxes, Autumnal and Winter |
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Bulge
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The shape of the earth is 43 km longer than it is high.
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Solstice
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-to stand
-the tilting of the earth towards the sun that causes summer and winter -2 solstices are Summer Solstice and Winter Solstice -tilting toward the sun causes summer solstice -tilting away from the sun causes winter solstice |
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Inertia
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-The tendency of object in motion to remain in motion in the same direction or if at rest, to remain at rest unless moved by another object
-Depends on the mass (size) of the object hitting it; a fly hitting you is different than a ball hitting you |
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Pendulem
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-A weight hanging from a wire so it can swing freely
-One of these is from Houston Museum of Natural Science |
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Tropic of Cancer
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-Imaginery line on the earth's surface at 23 1/2 degrees north latitude
-Suns rays hit this directly during the Summer Solstice |
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Eccentric
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A circular motion; an off centered circle
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Ptolemaic Theory
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An early, widely held geocentric theory that the earth was the fixed center of the universe and that all celestial bodies revolved around it
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Gravity
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The force that holds the planets in orbit around the sun and the moons in orbrit around the planet
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Copernican Theory
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A sun centered model of the solar system
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How many hours are there between Roman and Jewish time
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6 hours
6AM Roman = 0 Hour Jewish |
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What seasons are in the northern hemisphere?
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Autumn
Winter Spring Summer |
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What are the seasons' proper names?
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Autumnal Equinox
Winter Solstice Vernol Eqinox Summer Solstice |
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Date when the seasons start?
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Autumn: September 22
Winter: December 21 Spring: March 21 Summer: June 21 |
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Length of the seasons' days
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Autumnal Equinox: Equal days and nights
Winter Solstice: Longer Night Vernal Equinox: Equal days and nights Summer Solstice: Longer Day |
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Location of the sun's perpendicular noontime rays
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Autumn: Equator
Winter: Tropic of Capricorn Spring: Equator Summer: Tropic of Caner |
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Position of the sun in the sky
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Autumn: Middle
Winter: Low Spring: Middle Summer: High |
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What original heavenly bodies were observed with the unaided eye
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Planets: Mercury, Venus, Mars, Jupiter, Saturn
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What is the differenence between geocentric and heliocentric theory?
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Geocentric: everything revolves around the earth
Heliocentric: everything revolves around the sun |
