Earth - Study Mode

[#86] The upper part of the mantle upon which the crust of the Earth floats is called ________
Correct Answer

(D) Asthenosphere

Explanation

Solution: The upper part of the mantle upon which the crust of the Earth floats is called Asthenosphere. The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere.

[#87] After Sun, which is the closest star to the Earth?
Correct Answer

(C) Proxima centauri

Explanation

Solution: Proxima Centauri is the nearest star to the solar system. Proxima Centauri is about 4.22 light-years from Earth and is the closest star other than the sun.

[#88] Low tides are
Correct Answer

(B) Weak

Explanation

Solution: Low tides are 20% lower than normal tides. Low tides occur in locations at 90° angles to the moon. Low tides are weak.

[#89] Which of the following pair is incorrect?
Correct Answer

(B) 0° longitude - Equator

Explanation

Solution: Zero degrees longitude is an imaginary line known as the Prime Meridian.

[#90] The revelations of a satellite photograph of the earth are as follows: 1. the Southern hemisphere bulges slightly more than the Northern hemisphere 2. it is slightly pear shaped ellipsoid of rotation 3. the polar axis of the earth is slightly shorter than the equatorial axis 4. the equatorial circumference is about 40,000km Which of the above statements are correct ?
Correct Answer

(D) 2, 3 and 4

Explanation

Solution: The revelations of a satellite photograph of the earth are it is slightly pear shaped ellipsoid of rotation, the polar axis of the earth is slightly shorter than the equatorial axis and the equatorial circumference is about 40,000 km.