The half-circle that defines the starting point for designating longitude on the celestial sphere is called the
a. vernal equinox.
b. ecliptic.
c. celestial prime meridian.
d. Greenwich meridian.
c
You might also like to view...
Sound: A plucked guitar string produces a sound wave of frequency 0.44 kHz on a day when the speed of sound is 340 m/s.(a) What is the wavelength of the sound wave?(b) How much time elapses between the impacts of two adjacent compressions of the sound wave on your eardrum?
What will be an ideal response?
Because almost all galaxies show redshifted spectra, we know that
A) the sky must be dark at night. B) the universe is expanding. C) our understanding of redshift is wrong. D) we must be at the center of the universe. E) the universe is closed.
Given that 1.00 in. = 2.54 cm and 1.00 yd = 36.0 in., how many meters are in 7.00 yd?
A) 6.40 m B) 36.3 m C) 640 m D) 1.78 × 103 m
The planet with the polar "ice caps" of frozen carbon dioxide is ______________
Fill in the blank(s) with correct word