The sun as the center of the solar system
The sun is a star in the solar system with a very heavy mass (300,000 times the mass of the earth) and the distance closest to the earth. The sun is not the greatest star when compared with the other 100 billion stars in the galaxy of the galaxy.
Even so the sun is the star to be the biggest star in our solar system. The solar diameter is 1.400,000 km wide, about 110 times the size of the earth. While the distance between the sun and the earth is 149,000,000 km or is often rounded to 150 million km.
The planets in the solar system always move around the sun due to the gravitational force of the sun. The magnitude of the force of gravity of the sun is 28 times stronger than the gravitational force of the earth, because the mass of the sun is much greater than the mass of the earth.
Like other stars, the sun is composed of various types of gas with very hot temperatures. The surface temperature of the sun is between 5000 ºC-6000 ºC while the core temperature can reach 15 million ºC. The gas elements that form it are hydrogen, helium, carbon, nitrogen, and other elements.
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The layers of the Sun.
The sun is a lanngit thing that benetuknya like a giant fireball whose temperature is very hot. When viewed from the earth, the surface of the sun looks smooth and flat. Though the fact is not so. On the surface there are jumps of flames every time. The sun is composed of several parts that have different characteristics.
atmosfer sun
The atmosphere of the sun is composed of two layers, the chromosphere and the corona.
1.The chromosphere is a layer close to the surface of the sun and has a low density. The chromosphere can be seen during a solar eclipse, ie a ring or a red coat that covers the sunballs. Based on this color, scientists estimate its temperature to reach 4,500ºC.
2.The corona is the outermost layer of the sun, which means the crown. As the outermost layer of the sun, the corona temperature is estimated to reach 1,000,000ºC. The thickness of the corona is 2,000 km. This part can be seen as a layer that surrounds the sun and looks like a crown. Where will be more clearly seen when the solar eclipse.
the benefits of the sun for the life of all living beings on earth.
The heat of the sun makes the air and the water can do flow or circulation. The heat from the sun will cause the sea ari to evaporate and turn into a cloud. Karean temperature difference due to the heat of the sun causes the wind to blow and push the cloud to the mainland. The cloud then lowers the rain water.
Ultraviolet rays emitted by the sun are useful for killing germs, especially germs that cause skin diseases. So that makes animal skin and human always healthy.
Through the sunlight can be known times such as morning, afternoon, afternoon, and night. The trick is to take care of the shadow of the stick in the sun.
Ultraviolet light is also useful as provitamin D which is useful to help bone growth in humans and animals.
Ultraviolet light also helps plants in the process of photosynthesis. The process of photosynthesis is a way of plants to produce food for themselves.
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