- Why does the tilt of the Earth’s axis relative to its orbit cause the seasons as the Earth revolves around the Sun? Draw a diagram to illustrate your answer.
Earth's seasons are the result of the tilt of the Earth's axis. Since the axis is tilted, different parts of the globe are oriented towards the Sun at different times of the year. Summer in the Northern Hemisphere is warmer than winter as the Sun's rays hit the Earth at a comparatively more direct angle for larger portions of the day, producing more heat and vice versa. Due to this very same tilt, when the Sun crosses the Equator it causes the equinoxes.
- Where do you have to be on the Earth to see the Sun at your zenith? If you stay at one such location for a full year, on how many days will the Sun pass through the zenith?
To see the Sun at its Zenith a person can be at a place between 23.5o ...
