Question

Causes the change of season. Explain

Answer 1

The change of seasons is one of those phenomena that people take for granted. They know it happens in most places, but don't always stop to think about why we have seasons. The answer lies in the realm of astronomy and planetary science.

The biggest reason for the seasons is that Earth's axis is tilted relative to its orbital plane. Think of the orbital plane of the solar system as a flat plate. Most of the planets orbit around the Sun on the "surface" of the plate. Rather than having their north and south poles point directly perpendicular to the plate, most planets have their poles at a slant. This is particularly true of Earth, whose poles are tilted 23.5 degrees.

Earth may have a tilt because of a large impact on our planet's history that likely caused the creation of our Moon. During that event, infant Earth was smacked pretty heavily by a Mars-sized impactor. That caused it to tip over on its side for a while until the system settled down.

Eventually, the Moon formed and Earth's tilt settled to the 23.5 degrees it is today. It means that during part of the year, half of the planet is tilted away from the Sun, while the other half is tilted toward it. Both hemispheres still get sunlight, but one gets it more directly when it's tilted toward the Sun in summer, while the other gets it less directly during winter (when it is tilted away).

When the northern hemisphere is tilted toward the Sun, people in that part of the world experience summer. At the same time, the southern hemisphere gets less light, so winter occurs there. The solstices and equinoxes are used mostly in calendars to mark the beginning and end of seasons but are not themselves related to the causes of the seasons.

Answer 2

Correct Question-

What causes the change of seasons? Explain.

Answer-

Earth's revolution and its axis mainly cause the change of season.

⇒The planet earth is blessed with different seasons like winter, summer, monsoon, autumn, and spring. These seasons are the common ones found in the world.

Causes for season change:

• The earth's movement around the Sun causes changes in the seasons in the world.
• Earth's axis is slightly tilted and hence, both the northern and southern parts of Earth have different seasons.
• If the northern part of planet earth is tilted towards the sun, it will cause winters in the southern part of Earth and vice versa.
• Hence, the revolution and movement of Earth around the Sun is considered the major reason for the change in seasons.

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