Having or representing the sun as the center, is the accepted AU model of the so
ID: 290385 • Letter: H
Question
Having or representing the sun as the center, is the accepted AU model of the solar system is called A) heliocentric B) geocentric C) none of these D both of these 23. Which feotures on the photosphere help show the Sun's rotation? A) Granulations B) rilles C) sunspots D) craters 24. What is the symbol representing the brightest stars? 25. Which coordinate did we use in our lab work to indicate north- south position of a star? A) Longitude B) latitude C) right ascension D) declination Which coordinate was used in our lab did we use in our lab to indicate east-west position of a star? A) Declination What is the term used when the moon is closest to the Earth's orbit? A) apogee 26. 5. B) longitudeC) right ascension C) latitude 27. B) perigee C) heliocentric ? perihelion E) alphelion 28. What is the point directly overhead, which has an altitude of 90 is called B) ecliptic C) local sky D) zenith A) Horizon "Project CLEA" stands for Contemporary Laboratory Experiences in Astronomy. A) True The abbreviation of IAU coordinates stands for 29. B) false 9. 30. A) In astronomical units C) In astrophysical Observatory units B) International Astronomical Units D) All of these E) none of these 31. The Earth rotates from? A) B) East to West C) North to South D) South East West to East 32. In the Stellar Spectrum lab, stars with strong lines of ionized helium (He I) are the stars in the Harvard system. They are the hottest at 4,000* K.Explanation / Answer
22. The answer is A) Heliocentric
Heliocentric model is the accepted astronomical model of that type of the solar system, which has the sun at its centre.
23.The answer is C)sunspots
When sunspots are being observed for large number of days, they seem to be moving. This tells us that our sun is rotating itself
24.The answer is A) ?
The brightest stars are represented by ? and second brightest are by beta and so on...
25. The answer is 4) declination
Declination is normally given in terms of the degrees from the +90° at the celestial north pole of the star to to ?90° at the south pole of the star.
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