Flashcards
P7: Coordinates in Astronomy
Flashcards do conjunto (8)
- 1What is the pole star?A star that doesn't seem to move because it is almost directly above the North Pole
- 2What is the Celestial Equator?An imaginary plane running across the sky extending out from the Earth's equator
- 3What are the two angles used to measure positions in the sky and what do they mean?Declination - Celestial latitude measured in degrees
Right Ascension - Celestial Longitude measured in degrees or time - 4Which planets can you see with the naked eye?Mercury, Venus, Mars, Jupiter and Saturn
- 5How do you track a planets movements?Every day at exactly the same time make a note of where the planet is in the sky and you'll see they move from east to weat
- 6What is retrograde motion?When a planet seems to change direction and go in the other direction making a loop or squiggle in its track before continuing as normal
- 7Which planets does retrograde motion happen to?Mars, Jupiter, Saturn, Uranus and Neptune
- 8Why does retrograde motion happen?Planets (like Earth) are on the orbits closer to the sun so when orbiting the sun will overtake other planets for a short amount of time
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- P7 - Studying the Universe FlashCards sobre P7: Coordinates in Astronomy, criado por hollzmegb em 11-05-2015.
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- hollzmegb
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