What is the role of sunlight? What are the functions of sunlight? Which 6 kinds

The sun is a large burning orange balloon. It's made up of 71 percent hydrogen and 27 percent helium, with only 2 percent of the rest. It is extremely hot, with a surface temperature of about 6000K and a ball center temperature of about 15 million degrees.

It is also extremely large, about 1.3 million times the size of the Earth, and 109 times the diameter of the Earth. It is 330,000 times heavier than the Earth and about 1500 million km.

It just burned all day long, emitting light and heat all around.

So what does the sun do? The role of the sun is as follows:

1. Bring us light and heat.

2. It will not produce exhaust gas, and can be ...... with solar energy, solar cars, and solar watchesThese save electricity, water, and the environment.

3. Sunlight shining on the ** will make the subcutaneous blood vessels dilate, the blood flow is vigorous, increase the excretion and resistance of toxic substances, and also increase the secretion of saliva and gastric juice, stomach and intestines.

Strengthens peristalsis, promotes appetite and digestion.

4. **It can also remove some chemicals, such as ergosol and cholesterol, under the exposure of sunlight.

etc., to produce vitamin D

These vitamins, calcium and phosphorus, are important components of our bones, and without them, you can get hypochondriasis.

5. In winter, pregnant women have many benefits from basking in the sun. This is because, during pregnancy, the body's metabolism accelerates, and the demand for various nutrients increases, especially the demand for calcium. As we all know, vitamin D promotes the body's absorption of calcium, if pregnant women lack vitamin D in their diet or insufficient intake and absorption, and sunlight is not common, ** 17--dehydrocholesterol can not be caused by ultraviolet rays.

Vitamin D is produced by irradiation, and calcium absorption by the intestinal wall is impaired. If there is a lack of vitamin D, calcium, phosphorus and other substances for a long time, pregnant women are prone to osteomalacia.

6. Miners who work underground for a long time can sunbathe to restore and maintain their health, and sunbathing has become a fashion for a time.

7. The energy on the earth directly or indirectly depends on the supply of sunlight and becomes the food chain.

8. Ultraviolet rays in sunlight can sterilize.

Of course, if you spend a long time in the summer sun, you will get a tan and sometimes heat stroke.

The sun can also cause disasters at times.

The sun is vital to humans. The Earth's atmospheric circulation, the rotation of day and night and the seasons, and the changes in the Earth's cold and warm temperatures are all the results of the sun's action. The Sun is the only star we can see in surface detail, and most of what we know about stars comes from the Sun.

Sunlight can bring light to the world, photosynthesis for plants, day and night for animals, and for humans, it can be a renewable energy source, which can replace the use of non-renewable energy, bring light to human beings and promote the growth of the human body.

Sterilization, solar energy, photosynthesis of plants, and much more all come from sunlight. The ultraviolet rays in the sunlight have a sterilizing effect, and the quilt can kill some bacteria; Solar energy can also be converted into electricity, kinetic energy, etc. for human activities; The photosynthesis of plants is also inseparable from sunlight.

It brings us light and warmth, because of the sun's rays, we can see everything during the day, otherwise it will be dark, and because of the sun's rays, we will feel warm, otherwise it will be a glacier.

Warm. Sterilization.

Promotes development.

Sterilization, antivirus, photosynthesis, bring warmth to human beings, promote plant development, and shine on the earth.

It can make the plant produce oxygen and it can have daytime.

This is a revelation.

Sunlight is the basic condition for the existence of living beings on the earth.

Light energy is the fundamental nucleus of the energy flow in the biosphere, oxygen is water, and light only provides energy.

Allow the trees to produce oxygen and purify the air.

Ultraviolet rays in sunlight have a healing effect.

It can also be used as an energy source.

1. The grass in spring is more energetic because of the sunshine.

2. The seedlings in the field are greener because of the sunshine.

3. The sun shines on the mountains, and the small trees on the mountains are taller because of the sunshine.

4. The sun shines into the river, and the fish and shrimp in the river swim more happily because of the sunshine.

5. The flowers in the flower bed bloom more vividly because of the sunshine.

Sunshine is golden, brilliant and warm, in life, if you meet the sun, it will make your mood better; When you meet the sun, you will enjoy warmth and sweetness.

In the afternoon, I sat at my desk, thinking about the exam paper I had just written. The disappointment of the teacher, the nagging of the parents, the ridicule of the classmates ......This picture is like a movie in my mind**, and my mood suddenly fell to the bottom.

So, I went to the window and opened the curtains. A ray of sunlight shone on my body, and I felt quite warm, and my previous irritability seemed to be much better. I was attracted by the sunlight and moved my chair to the balcony to welcome more sunlight.

I sat in my chair, being exposed to the sun, and felt more comfortable than I had ever felt before. The previous bad mood has long been thrown out of the clouds.

I walked into the room, took out the test paper, and redid all the wrong questions, and I got them all right. This is all the credit of that ray of sunshine, which made me change from a bad mood to a good mood, and gave me the courage to face difficulties and setbacks.

1. Sterilization: sunlight can kill the germs on bedding, clothes and mattresses, and clothes can be dried in the sun in daily life;

2. Improve heart function and improve the flow of blood jujubes;

3. Sunlight can improve the nutritional value of vegetables and fruits;

4. Enhance human immunity, improve the itch-carrying ability of red blood cells and the ability of white blood cells to swallow bacteria, and increase the number of lymphocytes;

1. Plants photosynthesize and release oxygen.

2. Provide heat energy to the earth's surface and bring warmth to living beings.

3. Frequent sun exposure is beneficial to physical health, sun exposure can delay aging, help the human body obtain vitamin D, enhance the body's immune function, promote the body's blood circulation, enhance the body's metabolism, regulate the central nervous system, improve hematopoietic function, ultraviolet rays in the sun and the function of killing bacteria, etc.

4. Solar cars, solar water heaters, solar calculators, etc. all use the light energy of sunlight.