The length of day and night in different regions

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Abdul bari

1. The length of day and night at different parts of the earth in different seasons By Abdulbari

2. How does the tilt of the earth affect the seasons? The short answer: Earth’s tilted axis causes the seasons. Throughout the year, different parts of the Earth receive the Sun’s most direct rays. So, when the North Pole tits toward the Sun, it’s summer in the Northern Hemisphere. And when the south pole tilts towards the sun, it’s winter in the Northern Hemisphere.

3. How does the angle of sunlight affect the seasons? Sunlight striking at an angle is “spread” across a wider area compared to sunlight striking perpendicular to Earth’s surface. Areas that receive more scattered sunlight receive less energy from our Sun. All of these factors combine to give Earth it’s annual cycle of seasons.

4. What affects the length of days? The length of the day changes from season to season due to the Earth’s axial tilt. The earth’s axis of rotation is inclined at 23.5 degrees to the plane of the ecliptic. This causes the seasons. In the northern hemisphere, at the vernal equinox, which is around the 20th of March. The Earth’s axis of rotation is perpendicular to the direction of the Earth to the Sun. The Sun is directly over the Equator and the days and nights are equal length everywhere. As time passes, the Sun’s position moves North and more of the Northern Hemisphere is in direct sunlight. The days get longer. At the June Solstice, the sun is over the Tropic of Cancer and the days are their longest in the Northern Hemisphere. After the solstice, the Sun’s position moves South until it is over the Equator at the September Equinox. The days get shorter in the Northern Hemisphere and the days and nights are of equal length at the Equinox.

5. Here is a video about the city of Tromsø in Northern Norway, where the sun never sets, then never rises.

6. Questions When do the days start to get longer? What combines to give the Earth it’s annual cycle of seasons? When is the Sun over the Tropic of Cancer?

7. Summary So far we have learned that the Earth’s tilted axis causes the seasons and that different parts of the Earth receive the Sun’s most direct Sun Rays then we learned how the angle of sunlight affects the seasons. Then we learned what affects the length of days.

8. Thanks, Guys