Answer: Option [C]The correct answer is 4 minutes. Each of these longitudes is called a degree. The 0 degree longitude passing through Greenwich, near London, is considered as standard and the time of all other time zones are calculated accordingly. The time difference between each longitude (each degree) is 4 minutes
Answer: Option [D]The correct answer is Sidereal year. Sidereal time is time measured with respect to the apparent motion of the 'fixed' stars in the sky due to the Earth's rotation.
Answer: Option [B]The Earth is an oblate spheroid and not a perfect sphere. This is because
The Earth has a rotational motion and the rotational speed increases as one goes from the Poles towards the Equator. The Equator experiences greater gravitional pull from the Sun.
Which of these statements are correct?
Answer: Option [D]The correct statements are
- The circumference of Earth is about 40000 KM
- Earth's Polar diameter is about 43 KM shorter than its equatorial diameter
- The total surface area of Earth is about 510 million square KM
Answer: Option [D]The correct answer is 111 KM. One degree of latitude, called an arc degree, covers about 111 kilometers (69 miles). Because of Earth's curvature, the farther the circles are from the Equator, the smaller they are. At the North and South Poles, arc degrees are simply points. Degrees of latitude are divided into 60 minutes.
