Essay On Sun - 100, 200, 500 Words

Sun Essay in English

The Sun is a star which is located at the centre of our solar system. It is a self-illuminated body of the milky way galaxy. The sun is the source of heat and light and the midpoint for the solar system. The planets rotate and revolve in circular orbits around the sun and the motion repeats after a fixed period of time and the motion of planets is rotatory, circular and periodic. The sun radiates light and heat, or solar energy, which makes it possible for life to exist on Earth. Here are a few sample essays on Sun.

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1. Sun Essay in English
2. 100 Words Essay on Sun
3. 200 Words Essay on Sun
4. 500 Words Essay on Sun

100 Words Essay on Sun

The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula. A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula. The Sun formed in the centre, and the planets formed in a thin disk orbiting around it. The sun is the largest object in the solar system and is nearly a perfect sphere. It contains about 99.9 percent of all the mass of the solar system. The temperature on the photosphere (surface of the sun) is 10,000 degrees Fahrenheit. Hydrogen and helium together make up 98% of the Sun’s mass. The Sun’s spectrum shows that it comprises trace amounts of other chemical elements like oxygen, nitrogen, carbon, silicon, iron etc.

200 Words Essay on Sun

The Sun is a massive sphere of hydrogen and helium held together by its own gravity. The various parts of the Sun are core, radiative zone, convective zone, photosphere, chromosphere, and corona.

Core | The core is the centre portion of the sun and is the source of all its energy. Radiation and convection are the two main techniques used to transfer the energy produced in the core. The radiation process consists of photons (energy) emitted by the Sun, and the convection means huge movements of material all throughout its interior portion.

Radiative Zone | It is the region around the core. By interacting with nearby particles, the energy in this region is conveyed as electromagnetic radiation or electromagnetic waves.

Convection Zone | This zone is next to the radiation zone. Energy produced in the core region moves through this zone by the process of convection. Convection is the transfer of heat energy by the movement of matter. Above this zone is the Sun’s atmosphere, made up of several layers called photosphere, chromosphere, and corona.

Photosphere | The outer layer of the sun is the photosphere. At this layer, the energy of the sun is released in the form of light. It is the most visible surface of the sun.

Chromosphere | It is the layer above the photosphere that glows with light reddish colour emitted by hydrogen. It is less dense than the photosphere.

Corona | It is the outermost layer of the sun's atmosphere with high temperature and low density.

500 Words Essay on Sun

The sun is the primary source of our energy. It is known as solar energy. It travels from the sun to the Earth in the form of rays. Some of these are visible light rays. We cannot see some rays, such as x-rays. Some of the benefits of sun and its energy include:

Photosynthesis | Without the sun, photosynthesis could not take place. It is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar. The sun provides the initial energy that starts the cycle of photosynthesis, which converts this sun energy into food for plants. The chlorophyll absorbs energy from sunlight. Green plants use this light energy to change water and carbon dioxide into oxygen and nutrients called sugars. The plants use some of the sugars and store the rest. The oxygen is released into the air.

Biological clock | The light/dark cycle of the sun has a powerful effect on the circadian clock, sleep, and alertness. Your body’s circadian clock responds to light, as a signal to be awake, and dark, as a signal to fall asleep. Exposure to sunlight is thought to increase the brain’s release of a hormone called serotonin. Serotonin is associated with boosting mood and helping a person feel calm and focused. At night, darker lighting triggers the brain to make another hormone called melatonin. This hormone is responsible for helping you sleep.

Hydrological cycle | The water cycle is the continuous movement of water in the earth's atmosphere involving processes like evaporation, transpiration, condensation, precipitation and runoff. Solar radiation is the main source of energy for evaporation which occurs in oceans, plants and soil. Water vapour rises in the atmosphere and condenses into clouds, returning to land as rain and releasing energy. Some rainwater soaks into the ground and the rest forms lakes and rivers. This underground water is necessary for trees and human consumption. River water also provides nutrients for aquatic life forms. The climate of a region is affected by temperature changes caused by warming and cooling of the atmosphere.

Greenhouse effect | The greenhouse effect warms the earth by trapping infrared radiation from the sun, but increased levels of greenhouse gases have caused a rise in temperature and adverse effects like global warming, air pollution, and depletion of the ozone layer.

Health benefits | Vitamin D is important for various bodily functions and can be obtained through sun exposure, diet, and supplements. Deficiency in vitamin D can lead to conditions like rickets in children and osteomalacia and osteoporosis in adults, which cause weakened bones and muscle weakness.

Solar energy | Solar energy is a renewable source of "green" energy produced by capturing light and heat from the sun using photovoltaic cells (solar panels). It is an alternative to conventional and grid energy and can be used to power home appliances, heat water, and rooms.

The sun is an important part of the solar system. It is what has allowed life to flourish on Earth. As a result, it provides us with numerous benefits for which we should be grateful. However, it is also important to remember that excessive sun exposure can have negative consequences.