Which of the following explains why seasonal conditions vary in parts of the world.
Earth is rotating on its axis
Earths axis is tilted as it revolves around the sun.
Earths orbit keeps it in line with the sun
Earth takes 365 days to revolve around the sun.
The correct answer is: Earth's axis is tilted as it revolves around the sun.
The correct explanation for why seasonal conditions vary in parts of the world is: Earth's axis is tilted as it revolves around the sun.
The correct explanation for why seasonal conditions vary in different parts of the world is: "Earth's axis is tilted as it revolves around the sun."
To understand why this is the correct answer, let's break it down:
1. Earth is rotating on its axis: This statement is true but it does not directly explain the variation in seasonal conditions. The rotation of Earth on its axis causes day and night, but it does not affect the changes in seasons.
2. Earth's orbit keeps it in line with the sun: Similarly, while Earth's orbit around the sun is important, it does not directly explain the variation in seasonal conditions. Earth's orbit is actually nearly elliptical, which means that it is not always perfectly aligned with the sun throughout its annual revolution.
3. Earth takes 365 days to revolve around the sun: This statement is true but, like the previous answers, it does not explain the variation in seasonal conditions. The length of time it takes for Earth to complete one revolution around the sun is important for determining the duration of a year.
4. Earth's axis is tilted as it revolves around the sun: This statement is the correct explanation for the variation in seasonal conditions. Earth's axis is tilted by about 23.5 degrees relative to its orbit around the sun. This tilt causes different parts of Earth to receive varying amounts of sunlight throughout the year, resulting in the changing seasons. When one hemisphere (either the Northern or Southern Hemisphere) is tilted towards the sun, it experiences summer, while the other hemisphere experiences winter. As Earth continues its orbit, the tilt causes the seasons to change.
Therefore, the correct answer is that Earth's axis is tilted as it revolves around the sun, leading to differences in seasonal conditions around the world.