Final answer:
The angle of sunlight striking the ground changes depending on the time of year and latitude due to the Earth's inclination angle. On the summer solstice, when the Earth's axis is tilted towards the Sun, the angle of sunlight is more direct, resulting in higher intensity of sunlight and longer daylight hours. On the winter solstice, when the Earth's axis is tilted away from the Sun, the angle of sunlight is less direct, resulting in lower intensity of sunlight and shorter daylight hours.
Step-by-step explanation:
When the inclination angle is 23º, the angle of sunlight striking the ground changes depending on the time of year. The inclination angle refers to the angle at which the Earth's axis is tilted in relation to the plane of its orbit. This tilt causes the angle of sunlight to change throughout the year. For example, on the summer solstice (around June 21), when the Earth's axis is tilted towards the Sun, the angle of sunlight striking the ground will be more direct, resulting in higher intensity of sunlight and longer daylight hours. On the winter solstice (around December 21), when the Earth's axis is tilted away from the Sun, the angle of sunlight striking the ground will be less direct, resulting in lower intensity of sunlight and shorter daylight hours.
It's important to note that the angle of sunlight also varies depending on the latitude of the location. Near the equator, the angle of sunlight is generally more direct throughout the year, while at higher latitudes, the angle of sunlight can vary significantly between seasons.