61: Consider the following statements:
1. The axis of the earth's magnetic field is inclined at 23 1/2 degree to the geographic axis of the earth.
2. The earth's magnetic pole in the northern hemisphere is located on a peninsula in northern Canada.
3. Earth's magnetic equator passes through Thumba in South India.
Which of the following statements given above is/are correct?
(a) 2 only
(b) 3 only
(c) 2 and 3
(d) 1, 2 and 3
Explanation:
An imaginary line joining the magnetic poles would be inclined by approximately 11.3 degree from the planet's axis of rotation. The axis of the earth is inclined to the plane of the ecliptic (the axis of the earth is inclined to the plane of the ecliptic (the plane in which the earth orbits round the sun) at an angle of 66 1/2 degree, giving rise to different seasons and varying lengths of day and night. Earth rotates on its own axis, tilted at an angle of 23.4 degree every 23 hr. 56' giving rise to Day and Night.
62: Assertion (A) :
60° - 65° latitudes in both the hemispheres have a low pressure belt instead of high pressure.
Reason (R) :
The low pressure areas are permanent over oceans rather than on land.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Explanation:
Both statements are correct. But R is not the correct reason or A. It is due to the rotational movement of the earth that these low and high pressure belts are formed.
63: Which one of the following regions of India is now regarded as an ecological hot spot ?
(a) Western Himalayas
(b) Eastern Himalayas
(c) Western ghats
(d) Eastern ghats
64: "Each day is more or less the same, the morning is clear and bright with a sea breeze; as the Sun climbs high in the sky, heat mounts up, dark clouds form, then rain comes with thunder and lightning. But rain is soon over." Which of the following regions is described in the above passage?
(a) Savannah
(b) Equatorial
(c) Monsoon
(d) Mediterranean
Explanation:
It is a characteristics of equatorial climate upto 12 degree north and south. Here everyday rain comes around 4 PM.
Hence option B is correct.
65: Seismic waves that vibrate perpendicular to the direction of their path:
(a) Travel through the solid parts of the earth only
(b) Travel through the solid as well as other parts of the earth
(c) Spread on the surface of the earth
(d) None of the above