Quick Answer
The position of the sun changes with seasons due to the Earth's tilt, resulting in varying sun angles and paths across the sky. In summer, the sun appears higher in the sky, while in winter, it appears lower. This change affects the duration of daylight and the intensity of sunlight.
Understanding the Earth’s Tilt
The Earth’s axis is tilted approximately 23.5 degrees relative to its orbital plane around the sun. This tilt causes the sun’s position to change throughout the year, resulting in the distinct seasons. As the Earth orbits the sun, the tilt of its axis remains relatively constant, but the planet’s position in its orbit affects the sun’s apparent position in the sky.
Calculating Sun Paths
To determine the sun’s path across the sky, you can use a technique called “sun declination.” This involves calculating the sun’s angle relative to the equator, which can be done using the following formula: declination = 23.45 * sin (360 * (284 + n) / 365), where n is the day of the year. By plotting the sun’s declination over the course of a year, you can visualize its changing path across the sky.
Observing Seasonal Changes
To observe the sun’s position and path, try using a technique called “shadow stick method.” On a sunny day, stick a stick in the ground and mark the end of its shadow. Mark the end of the shadow at regular intervals over several hours. The resulting pattern will show you the sun’s path across the sky, illustrating the changes that occur with the seasons.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.