Term
| How far back do monuments with astronomical significance date back to? |
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Definition
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Term
| Many of the mentioned monuments could be used to predict what? |
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Definition
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Term
| What was stonehenge probably used as? |
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Definition
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Term
| Who are the first preserved written documents about astronomy from? |
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Definition
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Term
| What two principles did ancient Greek philosophers generally produce incorrect models on? |
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Definition
1. Geocentric Universe
2. Perfect Heavens (motions of all celestial bodies described by motions of objects with "perfect shapes") |
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Term
| Define Geocentric universe |
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Definition
| Earth at Center of the universe |
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Term
| Ptolemy refined the astronomical model by including what? |
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Definition
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Term
| The Ptolemaic system was considered the standard model of the Universe until what? |
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Definition
| the Copernican revolution |
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Term
| Copernicus was the first to introduce the model for what kind of universe? |
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Definition
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Term
| Define heliocentric universe. |
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Definition
| Sun in the center of the universe |
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Term
| When does the retrograde (westward) motion occur? |
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Definition
| When the earth passes the planet |
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Term
| Who was the first to report observations of the sky to support the Copernican Model? |
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Definition
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Term
| List five of Galileo's major astronomical discoveries |
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Definition
1. Moons of Jupiter (four Galilean moons)
2. Rings of Saturn
3. surface structures on moon
4. Sun spots
5. phases of Venus proving that venus orbits the sun and not earth |
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Term
| What two ideas did Kepler abandon that enabled him to formulate a consistant model of the universe? |
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Definition
| Circular motion and uniform motion |
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Term
| What is Kepler's first law? |
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Definition
| the orbits of the planets are ellipses with the sun at one focus |
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Term
| What is Keplers second law? |
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Definition
| The line from the planet to the sun sweeps over equal areas in equal intervals of time |
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Term
| What is Kepler's third law? |
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Definition
| A planet's orbital period (p)squared is proportional to it's average distance from the sun (a) cubed. |
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Term
| Does a planet move faster when it's closer to the sun or farther from the sun? |
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Definition
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