Related Questions

The position of a heavenly body on the celestial sphere can be completely specified by
A Its altitude and azimuth
B Its declination and hour angle
C Its declination and right ascension
D All the above
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
A Equal to
B Equal and opposite to
C Less than
D Greater than
One who studies heavenly bodies is called-
A astrologer
B astronomer
C palmist
D vinter
The altitudes of heavenly bodies appear to be greater than they actually are. This is due to ________
A Vertical motion of these heavenly bodies
B Motions of the earth
C Atmospheric refraction
D These are visible because of light of the sun reflected from their surface
Comets are celestial bodies moving about the solar system in
A Elliptical or hyperbolic orbits, usually accompanied by a shining tail
B Elliptical orbits usually accompanied by a long shining tail
C Hyperbolic orbit always accompanied by a shining head
D Hyperbolic orbit without projecting any tail or head
The zenith is the point on the celestial sphere
A East of observer
B West of observer
C North of observer
D South of observer
The great circle along which the sun appears to trace on the celestial sphere with earth as centre during the year, is called
A Equator
B Celestial equator
C Ecliptic
D None of these
The point on the celestial sphere vertically below the observer's position, is called
A Zenith
B Celestial point
C Nadir
D Pole
The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called
A Visible horizon
B Sensible horizon
C Celestial horizon
D True horizon
Which of the following celestial bodies bear, 'The Sea of Tranquility' and 'The Ocean of Storms' ?
A Mars
B Venus
C Moon
D Sun

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