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48 Cards in this Set
- Front
- Back
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perihelion
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the point nearest to the sun in the orbit of a planet or comet
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aphelion
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the point farthest from the sun in the orbit of a planet or comet
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when is the earth closest to the sun?
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January 3
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how far is the sun from the earth?
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93 million miles
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what causes the seasons?
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the earth rotates on it's axis and revolves around the sun
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how many degrees is the earth's axis tilted?
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23 1/2 degrees
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how many degrees is the earth's axis tilted?
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23 1/2 degrees
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why are days and nights different lengths at different places around the globe?
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the earth's 23 1/2 degree tilt
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what is daylight and darkness like at the equator?
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they are equal
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why are days and nights different lengths at different places around the globe?
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the earth's 23 1/2 degree tilt
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how many degrees is the earth's axis tilted?
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23 1/2 degrees
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what are daylight and darkness like at the poles?
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24 hours of sunlght or 24 hours of darkness that change every six months
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what is daylight and darkness like at the equator?
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they are equal
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why are days and nights different lengths at different places around the globe?
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the earth's 23 1/2 degree tilt
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what are daylight and darkness liie inbetween the two?
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there is a gradual change from one extreme to the other
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what is daylight and darkness like at the equator?
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they are equal
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what are daylight and darkness like at the poles?
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14 hours of sunlght or 24 hours of darkness that change every six months
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what are daylight and darkness like at the poles?
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14 hours of sunlght or 24 hours of darkness that change every six months
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what are daylight and darkness liie inbetween the two?
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there is a gradual change from one extreme to the other
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how many degrees is the earth's axis tilted?
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23 1/2 degrees
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why are days and nights different lengths at different places around the globe?
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the earth's 23 1/2 degree tilt
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what is daylight and darkness like at the equator?
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they are equal
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what are daylight and darkness liie inbetween the two?
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there is a gradual change from one extreme to the other
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what are daylight and darkness like at the poles?
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14 hours of sunlght or 24 hours of darkness that change every six months
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what are daylight and darkness liie inbetween the two?
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there is a gradual change from one extreme to the other
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what did the greeks think of the earth's motions?
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the stars were the gods that were pulling chariots through the sky. each planet was in it's own crystal sphere
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when did Ptolemy live and how long did his theories last?
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he lived 100-170 A.D./over 1300 years
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what theory did Ptolemy believe in?
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Geocentric Theory
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what was the title of the book Ptolemy wrote?
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"The Greatest"
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eccentric means,
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off-centered
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what are epicyles?
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when something is moving in samll loops but still staying on it's main course
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heliocentric theory said???
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the sun was in the center of the solar system
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what did Copernicus think about the earth's motions??
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he thought the earth was just another moving planet, the sun was at the center of the solar system
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what happened to Copernicus becaouse of his beliefs?
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religious people of the day thought he was a heretic
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what was Copernicus' educational backgorund???
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he was a polish priest, doctor and a lawyer
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what is Copernicus called the father of????
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modern astronomy
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what is the heliocentric thoery sometines called?????
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Copernican theory
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which theory is sometimes called the Ptolemic theory???
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Geocentric Theory
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what did Brahe believe, but what did his observations support????????
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Geocentric theory/heliocentric theory
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what did Brahe do each night at his observatory????
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made nightly, detailed observations
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what did Brahe do with the naked-eye instruments??
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improved them
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what happened to Brahe????
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he got in a duel and got his nose cut off
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tell three things about Galileo
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1.Father of modern science
2.first to develop the telelscope 3.he was persecuted heavily by the Roman Catholic church |
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tell three things about Kepler
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1.german friend of Tycho Brahe
2.3 laws of planetary motion 3.great Christian scientist |
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tell three things about Newton
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1.formulated laws of gravity and of motion
2.even Einstein depended on his work 3.an Englishman that made tremedous contributions to math, astrononmy, and physics |
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what would the wind patterns be like on earth of it did not rotate??
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more simpler; wind would go from the poles to the equator
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what are the wind patterns like since the earth does rotate???
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we see adiagonal wind pattern
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what are the four spheres of earth science???
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1.atmosphere- study of gases surrounding the earth
2.celestial sphere- study of the night sky 3.geosphere- study of the earth 4.hydrosphere- study of the waters |
