EARTH MCQS SET 17

EARTH MCQS SET 17

1. Which of the following pairs of metals are supposed to constitute the internal core of the earth?
(a) Chromium and Iron
(b) Magnesium and Lead
(c) Iron and Copper
(d) Nickel and Iron
Ans: (d)

2. 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:
(a) the evaporation of water from atmosphere results in precipitation occurring in winter alone
(b) Sun-rays falling on the earth are inclined more towards the sun in winter
(c) the earth is closer to the sun in summer than in winter
(d) the axis of the earth is inclined more towards the sun in winter
Ans: (b)

3. Who among the following was first to measure the circumference of the Earth?
(a) Eratosthenes
(b) Aristotle
(c) Hecataeus
(d) Herodotus
Ans: (a)

4. Heat received by earth from the Sun is known as:
(a) insolation
(b) solar heat
(c) solar radiation
(d) thermal radiation
Ans: (a)

5. Lunar eclipse is caused when the:
(a) moon comes between the sun and the earth
(b) earth comes between the sun and the moon
(c) sun comes between the earth and moon
(d) none of these
Ans: (b)
6. Lunar eclipse does not occur every month because:
(a) the sun's orbit is not always in the same plane as the moon
(b) the moon revolves at a slower speed than the earth
(c) the moon's orbit is not all the time in the same plane as the earth
(d) none of these
Ans: (c)
7. Lunar eclipse occurs on :
(a) New moon
(b) Full moon
(c) Half moon
(d) Quarter moon
Ans: (b)
 
8. The Solar eclipse achieves totality only in limited geographical regions because:
(a) the trajectories of the Earth around the Sun and the Moon around the Earth are not perfect circles
(b) the size of the shadow of the Moon on the Earth is small compared to the cross-section of the Earth
(c) sun rays can reach most of the peripheral regions of the shadow of the moon due to atmospheric refraction
(d) the Earth is not a smooth flat surface, but has elevations and depressions
Ans: (b)

9. Solar eclipse occurs when:
(a) Earth comes between sun and moon
(b) Moon is at right angle to the earth
(c) Moon comes between sun and earth
(d) Sun comes between moon and earth
Ans: (c)
10. The position of a planet when it is nearest to the Sun, is called:
(a) perihelion
(b) apihelion
(c) apigee
(d) perigee
Ans: (a)