_______________ causes day and night
Revolution of earth
Motion of earth
Rotation of earth
None of these
The duration of a day and night is _______________
12 hours
24 hours
30 hours
15 hours
From the earth, stars seem to be arranged in some patterns called _____________
Comets
Solar sytem
Constellations
The spinning of earth on its own axis is called ____________
Rotation
Revolution
Orbiting
