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11.

Equinox occurs when the sun is vertically above:

A.	Tropic of Capticorn	B.	Equator
C.	Poles	D.	Tropic of Cancer

12.

Summer Solstic in the Southern Hemisphere occurs on:

A.	22-Dec	B.	20-Nov
C.	20-Jul	D.	25-Mar

13.

One degree of the circumference of the earth measures approximately:

A.	100 km	B.	111 km
C.	150 km	D.	170 km

14.

Heat received by earth from the sun is known as:

A.	Solar radiation	B.	Insolation
C.	Solar heat	D.	Thermal radiation

15.

At the core of the earth, the temperature is estimated to be around:

A.	1000	B.	1500
C.	2000	D.	2500

16.

The time required for moon light to reach earth:

A.	3 seconds	B.	1.3 seconds
C.	3.5 seconds	D.	5 seconds

17.

The position of the earth in its orbit, when it is at its greatest distance from the sun causing summer in the Northern Hemisphere is:

A.	Perihelion	B.	Aphelion
C.	Perigee	D.	Apogee

18.

Days and nights are equal throughout the globe when sun is above:

A.	Poles	B.	Equator
C.	Tropic of Cancer	D.	Tropic of Capricorn

19.

The mean distances on the perihelion and aphelion is:

A.	100 km	B.	149.5 km
C.	180.5 km	D.	185 km

20.

The term that best describes the shape of the earth is:

A.	Eclipse	B.	Geoid
C.	Globe	D.	Sphere