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Transcript of Sun
The sun's radius is approximately 695,000 km long. That is over 100 times larger than the earth's size! The circumference of the sun's equator is about 4,370,000 km.
The sun provides heat, light, and other energy source for the earth. The part of the sun that we can see is approximately 5500 degrees Celsius. To measure the temperature of the sun, you use a type of measuring called "Star Temperature". Star temperature is measured in a metric unit called Kelvin (K). 1 kelvin is equal to 1 Celsius degree above absolute zero. Temperatures in the sun's core reaches over 15 million kelvin. The energy of the sun comes from nuclear fusion reactions that happen inside the sun's core. In a fusion reaction, two atomic nuclei join together forming a new nucleus. Fusion produces energy by converting nuclear matter into energy. The sun's power is approximately 386 billion megawatts.
Inside the Sun
The sun, like most other stars, is made up of mostly hydrogen atoms. The second most used element is helium. The rest of the remaining matter consists of 7 other elements.
The inside of the sun and most of its atmosphere is made up of plasma. Plasma is a gas that has become so hot that it becomes sensitive to magnetism. Some scientists say that plasma is a fourth state of matter. The others being solid, liquid, and gas.
The main difference between plasma and other gases is an effect of the temperature increase. This increase has made gas atoms come apart. Plasma consists of electrically charged atoms called ions and electrically charged particles called electrons that move freely.
Although stars live different lengths according to their size, our sun is about half its age at 4.57 billion years old. That means, stars like our sun lives for approximately 10 billion years.
What is a sun?
The sun is a ordinary star. The sun is called Yellow Dwarf (G2V) for the type of star. The sun has the mass of 333,060 times more than the mass of Earth (1,989,100,000,000,000,000,000 billion kg)
How Old Is Our Sun?
Elemental Composition of the Sun
Eventually, the sun will become the size of our Earth
The sun contains 99.8% of mass in our solar system
The sun is almost a perfect sphere
The light from the sun takes 8 minutes to reach the Earth
The sun travels 220 kilometers per second
The Sun generates solar wind, this is a stream of charged particles, which travels through the Solar System at about 450 kilometers per second
The distance from the Sun to Earth changes throughout the year
In this presentation, we will discuss some information related to the sun, such as the age of the sun, size, what our sun is, energy produced, solar eclipse, and about what is inside of our sun.
A solar eclipse in when the Moon passes in front of the Sun casting a shadow on the Earth
There are several sorts of eclipse: partial, annular, and total
There are about 2-5 solar eclipse each year.
Only partial solar eclipse can be observed from the North and South pole
How it Works
The Future of the Sun
Once all the hydrogen has been burned, the sun will continue to burn for another 130 million years, burning helium . During this phase, the sun will expand to the point where Mercury, Venus and Earth will be destroyed. At this point, the sun will be called a Red Giant. After the sun's red giant phase, the sun will collapse. It will keep its same mass, but will contain about the same volume as our planet. The sun will now be called a White Dwarf.
By: Zaac, MJ, Jacob Kim, Daniel, Jacob Cowan