Consider the following statements and select the correct answer from the codes given below:

1. The northern end of the earth’s axis is called North Pole.
2. 45° parallel is half of the length of the equator.
3. There is parallelism of the earth's axis.
4. The earth's speed of revolution is faster in aphelion position.

Codes:

Explanation

1) The northern end of the earth’s axis is called the North Pole.

2) The equator is the widest part of the Earth, and all parallels are smaller circles compared to it.

3) The parallelism of Earth's axis is the maintenance of the Earth's tilt as it revolves around the sun. The Earth's axis is tilted at an angle of 23.5° from its axis and 66.5° from its orbit, and it maintains this tilt throughout its revolution.

4) Earth's speed of revolution is actually faster at perihelion, the point in its orbit closest to the sun, and slower at aphelion, the point farthest from the sun. This is because the Earth's areal velocity around the sun is constant, so to cover the same area at a specific time interval, the Earth moves faster when it's closer to the sun and slower when it's farther away.