The moon is the brightest celestial body in our night sky, it brings us light and beauty, but also poetry and mystery. However, have you ever wondered why the moon is cloudy and sunny?How does the moon change?What are the laws and effects of the changes of the moon?
To understand why the moon is cloudy, sunny and waxy, we must first know what the moon's changes are. The change of the moon refers to the phenomenon that the shape of the moon looks different at different times, and it is caused by the movement of the moon and the irradiation of the sun.
The movement of the moon refers to the rotation of the moon around the earth, which is due to the gravitational pull of the earth. The movement of the moon can be divided into rotation and revolution. Rotation is when the moon rotates around its own axis, and its period is about 273 days, that is, the moon takes 27It takes 3 days to make one turn. Revolution refers to the rotation of the Moon around the Earth, and its period is about 295 days, that is, the moon takes 29It takes 5 days to go around the Earth. The rotation of the moon is not much different from the revolution cycle, so we always see the same side of the moon, which is why the back side of the moon is never seen.
Sunlight irradiation, which refers to the sun's rays shining on the surface of the moon, is produced due to the sun's luminescence. The sun's irradiation can be divided into direct and oblique radiation. Direct sunlight is when the sun's rays shine perpendicular to the surface of the moon, and it causes half of the moon to be completely illuminated, which is the reason for the full moon of the moon. Oblique rays are when the sun's rays shine obliquely on the surface of the moon, which causes part of the moon to be illuminated and part to be obscured, which is why the other aspects of the moon.
The moon's cloudiness and waning refers to the phenomenon that the shape of the moon looks different at different times, which is caused by the movement of the moon and the irradiation of the sun. The waxing and waning of the moon can be divided into four main phases: the new moon, the first quarter moon, the full moon, and the last quarter moon. These four aspects can be divided into eight secondary phases: the beginning.
First, the beginning. Second, the beginning.
Third, the beginning. Four, ten.
Five, ten. VI, XVII and XVIII. These eight minor aspects can be divided into more subtle phases, such as the Moth Eyebrow Moon, the Quarter Moon, the Waxing and Waxing Moon, the Looking Moon, the Waxing and Waning Moon, and so on. The moon's cloudy and sunny days are due to the constant change of the moon's relative position to the sun and the earth in the process of moving around the earth, resulting in the constant change of the illuminated part and the shaded part of the moon, thus forming different shapes.
There is a fixed law of the moon's cloudiness and waxing, which is determined by the moon's movement cycle and the angle of the sun's illumination. The period of the moon's motion, which refers to the time it takes for the moon to travel from one aspect to another, has an average of about 295 days, that is, the moon takes 29It takes 5 days to change from a new moon to a new moon, or vice versa from a full moon to a full moon. The angle of illumination of the sun refers to the angle between the sun's rays and the surface of the moon, and its size varies with the position of the moon, ranging from 0 degrees to 180 degrees. According to the cycle of the moon and the angle of the sun, we can get the following laws:
When the moon is between the sun and the earth, the sun's rays hit the back of the moon, the front of the moon is completely obscured, and we can't see the moon, which is the new moon.
When the moon is on the right side between the sun and the earth, the sun's rays hit the right half of the moon obliquely, the right half of the moon is illuminated, the left half is obscured, we see the right half of the moon, which is the first quarter moon.
When the moon is behind the sun and the earth, the sun's rays shine directly on the front of the moon, the front of the moon is completely illuminated, the back side is obscured, and we see the whole circle of the moon, which is the full moon.
When the Moon is on the left side between the Sun and the Earth, the Sun's rays hit the left half of the Moon obliquely, the left half of the Moon is illuminated, the right half is obscured, and we see the left half of the Moon, which is the last quarter of the Moon.
The waxing and waning of the moon is not only a beautiful natural phenomenon, but also an important natural force. The moon's cloudiness and sunshine are mainly affected by the following aspects:
The moon's cloudiness affects the earth's illumination, such as moonlight, lunar eclipses, moon phases, etc., which in turn affects the earth's temperature, humidity, air pressure, etc., thus affecting the earth's climate, environment, ecology, etc.
The moon's cloudiness and sunshine affect the earth's gravitational attraction, such as tides, tidal ranges, currents, etc., which in turn affect the earth's waters, land, atmosphere, etc., thus affecting the earth's landform, tsunamis, etc.
The waxing and waning of the moon has affected human life, such as agriculture, fishing, navigation, observation, etc., which in turn has affected human production, transportation, science, culture, etc., thus affecting human history, society, psychology, etc.
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