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Nowak- Early Astron.
Nowak- Early Astronomy
| Question | Answer |
|---|---|
| What did ancient cultures base thie calendars on? | seasonal cycles of celestial objects |
| calendar | system for organizing time |
| year | time required for the Earth to orbit the sun once |
| month | roughly the amount of time for the moon to orbit the Earth once |
| day | the time required for the Earth to rotate once on its axis |
| Ancient Egyptian calendar | contained one 5 month day |
| Which ancient calendars were based on the sun? | Hebrew, Egyptian, and Mayan |
| Why did Julius Caesar added 90 days to the year 45 BC? | to put the seasons back to their original position |
| Most countries use this calendar | Gregorian |
| Ancient culture that invented algebra and our modern number system | Arabs |
| Ancient culture that made the earliest astrononmical observations | Nabta |
| Ancient culture that made an accurate calendar based on skilled forecasting | Babylonians |
| Ancient culture that could predict eclipses | Chinese |
| Ancient culture that use logic and geometry to explain eclipses and the phases of the moon | Greeks |
| Ancient culture that produced the world's oldest portable star map | Mayans |
| Some stones in circles that are aligned with the sunrise during the solstices | Stonehenge |
| Many buildings aligned with celestial bodies during certain astronomical events | Mayans |
| How did the earliest astronomers learn about the universe? | with their own eyes and minds |
| For ____ years Ptolemy's Earth-centered thoery remained the popular theory for the structure of the universe? | 1500 |
| Copernicus thought | the planets orbit the sun and the sun was the center of the universe |
| Newton explained that the planets and the moon stay in orbit due to | gravity |
| Kepler stated that planets move in ______ orbits around the sun | elliptical |
| Brahe used _____ to measure the positions of planets and stars | mural quadrant |
| Galileo | first person to use telescope to observe celestial bodies |
| William Herschel discovered which planet? | Uranus |
| Which invention in the 1800's allowed astronomers to improve their observations of the sky? | photography |
| Hubble discovered that the fuzzy patches Herschel discovered were | other galaxies |
Created by:
seagullq
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