Earth-Test 1

The seasonal contrasts are maximum in

What percentage of insolation is received by the earth’s surface ?

What is the maximum length of a day on the poles ?

Which of the following are true regarding equinoxes ?

(i) They occur on March 21st and Sept 23rd

(ii) They depict equal days and equal nights on March 21st and Sept 23rd on all places of the earth.

(iii) All places on the earth have equal temperature during equinoxes

Seasons on earth are caused by

The earth rotates around its axis from

The inclination of the earth’s axis to the orbital plane is

The mean radius of the earth is approximately

Vernal equinox falls on

The fixed path along which the earth revolves round the sun is called

The word used to describe the shape of earth is

Which of the following is the cause for the earth’s seasons ?

Equinox occurs when the sun is vertically above

What is the correct sequence of the following layers of the earth as one moves from the surface to the interior

1. Mantle       2. Crust       3. Core

Select the correct answer by using the codes given below :

Summer solstice in the southern hemisphere occurs on

Consider a specific point on the surface of the earth (say, Delhi). The temperature at a given time of day (say, 12.00 Noon) will in general be higher in summer than in winter. This is because :

One degree of the circumference of the earth measures (approx.)

Heat received by earth from the sun is known as

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

Seasonal variation is the least

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 :

The time required for moonlight to reach earth

Which of the following is the best definition of ‘Tides’ ?

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

The mean distance between the distances on perihelion and aphelion (in million km) is