How does the night sky change? A question that teachers ask elementary school students as a deductive question that calls for combining the information gained about the globe and the moon in geography, which includes some educational units about outer space and astronomy. Explain her appearance to the inhabitants of the Earth in blue.
What is the sky
Before answering the main question of the article, how does the sky change, it is necessary to start defining it, as it is called in English “Sky”, which is the area, or the area that corresponds to the surface of the earth, and is estimated from sea level to an altitude of 100 km and is represented by an area called Carmen line is an imaginary line that separates the sky from space. The sky includes the following three layers of the atmosphere:
troposphere. stratosphere. mesosphere layer.
How does the night sky change?
The night sky is changing the moon Although it is a dark celestial body, it reflects the sunlight that falls on it and lights up the skyThe view of the sky from the surface of the globe varies according to the time difference between night and day, the seasons of the year, and the weather as well, just as the Earth’s rotation around itself leads to the succession of day and night, and its rotation around the sun to the succession of the four seasons. As for the weather, the cloudy sky may appear white. .
Why is the color of the sky blue?
The sky appears blue in daylight, while it appears in shades of red, yellow and orange at sunrise and sunset, and the origin of the blue color is due to the atmospheric gases absorbing the sun’s rays, as it absorbs nitrogen and oxygen in particular. The sun’s rays and its particles analyze white light that includes all the spectrum of colors in different wavelengths, then it absorbs wavelengths of all colors such as red and green and reflects them except for blue, which makes the sky appear blue to the population. from Earth.
How does the night sky change? A question that calls for thinking about the development of science, and changing misconceptions, beliefs, and myths, as people believed in the past that the sky, or what is called the heavenly dome, is the earth’s atmosphere and its color is blue during the day, and if night comes its color turns black, as the world of Space is associated with many Greek and Greek myths, of which only some names survive, such as Mars and Uranus.
