Earth MCQ Question and Answer | Geography MCQ Question

Tides are periodic rises and falls of large bodies of water. A periodic rise and fall of sea water caused by the gravitational force of moon and sun on earth.

The following that are true regarding the Prime meridian are that it passes through the centre of a certain country, it passes through the centre of the Globe and it passes through the observatory at Greenwich, near London.

If there are four places on the same meridian 500km apart and the local time at one place is 12.00 noon, 12.00 noon will be the time at the three other places.

The moon takes exactly 30 days to complete the cycle and it rises in the east exactly at 6.48 p.m., on the first day. On the fourth day, it rise at 10.00 p.m.

Tides are caused by the gravitational pull of the moon and the sun on Earth's oceans. The tidal pattern follows a roughly 24-hour and 50-minute cycle. Each day, the tide occurs about 50 minutes later than the previous day. This phenomenon is due to the rotation of the Earth in relation to the moon's position. As a result, the high tide occurring at 8:00 A.M. on one day will occur approximately 50 minutes later, at 8:52 A.M., on the next day. This gradual delay in the timing of tides is known as the "lunar day."

While it is 6.30 AM (Sunday) in London, it is around 8.30 PM (Saturday) in Honolulu (Hawaii) and 3.30 PM (Sunday) in Tokyo. London, UK is 10 hours ahead of Hawaii, USA and Tokyo, Japan is 9 hours ahead of London, UK.

The outer core is believed to be made up of iron nickel is because of the theory of paleomagnetism. The change in the magnetic poles all through different geological eras.

The following statements that are true regarding the earth's axis are that it makes an angle of 23.5^o with the plane of ecliptic and it is the most important fact connected with Earth-Sun relationship.

Due to elliptical path, distance of Earth from Sun keeps changing. It is nearest to Sun on 3rd January known as Perihelion.

On December 22, the sun is not visible at north pole, rises south of east and sets south of west at the Tropic of Cancer and rises south of east and set south of west at the equator.