Why is the equator region the hottest part of Earth's surface?

- The equator region is closest to the sun.
- The sun shines directly on the equator region.
- The rays of the sun hit the equator region at an angle.
- The equator region has the widest diameter.

The equator region is the hottest part of Earth's surface because the sun shines directly on it. The rays of the sun hit the equator region at a near perpendicular angle, providing more direct solar energy compared to regions further away from the equator. This results in higher temperatures in the equator region compared to other parts of the Earth. Additionally, the equator region receives more sunlight throughout the year due to its position on the Earth's surface, contributing to its overall higher temperatures.