Science Form 3 Chapter 9

CHAPTER 9 : STAR AND GALAXIES 9.1 The temperateness Characteristics of the sun faint-hearted| 1. At the center field of the solar System, lies our very own star known as the sunshine. 2. The sunshine is nearly 110 times bigger than the footing. 3. The insolate appears bigger and brighter than all the other stars. This is because the Sun is the ne lift bulge star to Earth. 4. The Sun is the largest object in the solar System. The galvanic pile 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 covering some phenomena on its come in 1. The ticker is the innermost storey of the Sun. The temperature of this bed 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 thermalosphere 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 stewing 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 out from the centre of the Sun. The temperature of this l ayer ranges between 6 000 ?C and 20 000 ?C. ! 3. The chromosphere glows red because hydrogen gives off a cherry-red food color at these high temperatures. The corona 1. The corona is the extremely hot outermost layer above the chromosphere. 2. Temperatures in the corona give the gate reach over 1 000 000 ?C. 3. It is the thickest layer, stretching several one million million kilometres into space. Phenomena 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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