Correct Option
The correct option isNorth Pole tilted towards Sun, South Pole tilted away.
Explanation
The position of the Earth relative to the Sun changes throughout the year due to its revolution and the tilt of its axis (approximately 66.5° with the plane of its orbit). This orientation determines the distribution of solar insolation and the occurrence of seasons, specifically phenomena such as Solstices and Equinoxes.
Detailed Analysis
On June 21st, the Earth is in the position known as the Summer Solstice for the Northern Hemisphere. During this time:
- The North Pole is tilted towards the Sun. Consequently, the Northern Hemisphere receives maximum sunlight, and days are longer than nights.
- The Sun’s rays fall vertically overhead at the Tropic of Cancer (23.5° N).
- Conversely, the South Pole is tilted away from the Sun, resulting in winter conditions in the Southern Hemisphere.
Analysis of other scenarios:
- South Pole tilted towards Sun, North Pole tilted away.: This describes the Winter Solstice (December 22nd), where the South Pole is tilted towards the Sun.
- Both Poles tilted towards Sun.: It is geometrically impossible for both poles to be tilted towards the Sun simultaneously due to the Earth's spherical shape.
- Neither Pole tilted towards Sun.: This describes the Equinoxes (March 21st and September 23rd), where the circle of illumination passes through both poles, and neither pole is tilted specifically towards the Sun.
Key Takeaway: June 21st marks the Summer Solstice, characterized by the North Pole tilting towards the Sun and the Sun's vertical rays striking the Tropic of Cancer.