Does the tilt of the earths axis causes the change of temperature?

Answer 1

Does the tilt of the earths axis CAUSE the change of temperature? Not directly, but there are several factors that link together, so that the Earth's axial tilt is related to the change in temperature as a "trailing indicator".

The Earth rotates constantly on its axis like a gyroscope does. Compared to the plane of the Earth's orbit around the Sun, the Earth's axis is tilted at an angle of about 23.5 degrees. As the Earth proceeds around its orbital path, the sunlight we receive is more directly vertical to the ground when the pole is tilted toward the Sun; that is to say, during the spring and summer. That's March 21 through September 21 in the northern hemisphere, and September 21 through March 21 in the Southern Hemisphere.

Because the Sun beats down more directly, this causes the Earth to begin heating up a little more. But notice that the real hot weather doesn't occur for about 3 months after the Spring Equinox, and a month or so after the Summer Solstice - when the Sun is already heading into fall.