Days and nights – are always equal at the
A.Poles
B.Equator
C.Prime Meridian
D.Antarctica
A.Poles
B.Equator
C.Prime Meridian
D.Antarctica
A.Arabian
B.Australian
C.Sahara
D.Gobi
A.Mean distance between sun and the nearest star
B.Mean distance between the earth and sun
C.Mean distance travelled by light in one year
D.Distance travelled by light in one year
A.When the gravitational pull of the sun is at right angles to that of the moon
B.The moon casts its shadow on the sun
C.Sun, moon and earth are in a straight line
D.None of the above
A.A group of islands having sea water all around.
B.Coral island or reef, usually an incomplete ring enclosing a lagoon
C.Lines connecting parts of the same altitude above the sea level
D.A chain of rocks lying at the sea
A.A Peninsula
B.An Isthmus
C.A Strait
D.An Archipelago
A.The Earth
B.The Sun
C.The Venus
D.No single heavenly body
A.Coal
B.Limestone
C.Slate
D.Shale
A.Few grains
B.No grains
C.Grains of big size
D.Grains which are not visible
A.Tidal current
B.Gulf stream
C.Tidal wave
D.None of the above