1. Polaris, the North Star, does not appear to move in the sky because: A. It is
ID: 153474 • Letter: 1
Question
1. Polaris, the North Star, does not appear to move in the sky because:
A. It is too nearby for its motion to be discernible
B. It is located directly overhead for everyone on Earth
C. The stars are fixed relative to each other
D. It lies approximately over the rotational axis of the Earth
2. Which of the following groups of information are sufficient to determine the local celestial co-ordinates of a star
A. Right Ascension and Date
B. Right Ascension and Time of day
C. Declination and hour angle
D. Declination and Date
E. Right Ascension and hour angle
3. Star A is seen to rise at [E 10o N] when observed from a Latitude of 35o North. Which of the following is closest to the rising point of Star A when observed from a Latitude of 70o South?
A. [ E 19o S ]
B. [ E 19o N ]
C. [ E 23o N ]
D. [ E 23o S ]
E. Star A never rises or sets when observed from Latitude 70o South
4. Star B rises at [ E 45o S ] when observed from a Latitude of 40o North. Which of the following is closest to the number of hours Star B will spend above the horizon when observed from a Latitude of 40o North?
A. 3.5 hours
B. 7.5 hours
C. 8.5 hours
D. 16.5 hours
E. 20.5 hours
Use these two links to help with the last 2 questions https://www.geogebra.org/m/ZKNrAgqq& https://www.geogebra.org/m/mG9GFFtq
Explanation / Answer
1. Polaris, the North Star, does not appear to move in the sky because It lies approximately over the rotational axis of the Earth.
2. Which of the following groups of information are sufficient to determine the local celestial co-ordinates of a star Declination and Date.
3. Star A is seen to rise at [E 10o N] when observed from a Latitude of 35o North. Which of the following is closest to the rising point of Star A when observed from a Latitude of 70o South?
the answer is E 19 degree north.
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