Science Form 3 Chapter 9

CHAPTER 9 : STAR AND GALAXIES 9.1 The temperateness Characteristics of the sun faint-hearted| 1. At the plaza of the solar System, lies our very own star known as the sunshine. 2. The cheer is nearly 110 times bigger than the landed estate. 3. The sunlight appears bigger and brighter than all the other stars. This is because the Sun is the ne take up star to Earth. 4. The Sun is the largest object in the solar System. The raft of the Sun is most 98% of the total mass of the solar System. Structure of the Sun| Figure 9.1 Structure of the Sun viewing some phenomena on its appear 1. The ticker is the innermost spirit level of the Sun. The temperature of this social class discount rise to 15 000 000 ?C. 2. The surface of the Sun consists of three gaseous layers: p tempestuousosphere, chromosphere and corona. The p gameyosphere 1. The photosphere is the innermost atmospheric layer of dense gases. It is considered as the surface of the Sun. 2. The visible light that reaches Earth from the Sun originates from the photosphere. 3. The photospheres experiences turbulence, much like the surface of a simmer pot of water. This is due to the explosive eruptions of energy on the surface of the sun. 4. Sometimes, interactions with the Suns magnetic field conduct in the appearance of sunspots on the photosphere. The chromosphere 1. The chromosphere is the layer above the visible photosphere. 2. Solar energy passes through this region on its trend issue from the centre of the Sun. The temperature of this layer ranges between 6 000 ?C and 20 000 ?C. 3. The chromosphere glows red because hydrogen gives off a cherry-red burnish at these high temperatures. The corona 1. The corona is the extremely hot outermost layer above the chromosphere. 2. Temperatures in the corona groundwork reach over 1 000 000 ?C. 3. It is the thickest layer, stretching several billion kilometres into space. Phenom! ena on the Suns surface| 1. Prominences, solar flargons and sunspots are examples of...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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