Motion of the earth on its axis in about 24 hours is called

• revolution

• rotation

• Both (a) and (b)

• none of these

The change of seasons is caused due to ___

• Movement of the sun

• Spherical shape of the earth

• Revolution

• Rotation

At what angle is the axis of the earth tilted to the vertical plane ?

• 66 1/2 Degrees

• 32 1/2 Degrees

• 23 1/2 Degrees

• 13 1/2 Degrees

What is the distance of the Earth when it is nearest to the sun

• 152 million km

• 162 million km

• 174 million km

• 147 million km

When do you have the Autumn Equinox

• 13 September

• 23 September

• 23 November

• 13 November

When do you have the Spring Equinox

• 12 March

• 23 March

• 21 March

• 22 March

The tropic of Capricorn receives the direct rays of the sun on

• 21 June

• 22 December

• 23 September

• 21 March

The period of diffused light before sunrise is called

• Evening

• Twilight

• Dusk

• Dawn

The fixed elliptical path along which the earth revolves is called

• Axis

• Tilt

• Orbit

• Radius

A leap year has

• 365 1/4th days

• 366 days 6 hours

• 365 days

• 366 days