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9 Cards in this Set
- Front
- Back
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What is an orbit? |
A curved path around a celestial object created by gravitational attraction between the objects - Continuously falling toward the target |
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What are the ways that we can define space? |
No definition of where space starts or stops, atmosphere continues til 480 km, continues to merge with spaces as pressure reaches vacuum. 80% of atmosphere is within 16km of the surface |
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Which type of orbit would be used to monitor weather? |
Geostationary orbits – locked in, goes around the earth as it rotates, always looking at the same pace |
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Which type of orbit is used for GPS tracking? |
Far Elliptical orbits: can see more of the earth, good for triangulation because they’re 20,182 km away from the earth, moves fast – 14,000 kph |
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Which orbit is best for getting to and returning from space easily? |
Low earth orbits: closest to the earth and where the space station is – 400 km above the earth |
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About how long does it take for astronauts to get to the ISS? |
About 12 hours |
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Which orbit type are most remote sensing satellites in? Why? |
Close elliptical orbits: tend to be over the poles, 600-2000 km up, good for remote sensing because you can see more detail on the earth at these heights and it doesn’t take too long for signals to reach the earth |
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Name three types of satellites (i.e. performing different functions) that use geostationaryorbits? |
Weather satellites, cellphone satellites, and national defense |
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Which author conceived of geostationary orbits before their applications were fully considered? |
Arthur C Clarke in Wireless world 1945 |
