Science Form 3 Chapter 9

CHAPTER 9 : STAR AND GALAXIES 9.1 The temperateness Characteristics of the sun faint-hearted| 1. At the concentre of the solar System, lies our very own star known as the sunshine. 2. The cheerfulness is nearly 110 times bigger than the man. 3. The cheerfulness appears bigger and brighter than all the other stars. This is because the Sun is the ne opera hat star to Earth. 4. The Sun is the largest object in the solar System. The mass 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 start 1. The ticker is the innermost socio-economic class of the Sun. The temperature of this floor 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 yearningosphere 1. The photosphere is the innermost atmospheric layer of dense gases. It is con sidered 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 step forward from the centre of the Sun. The temp erature of this layer ranges between 6 000 ?! C and 20 000 ?C. 3. The chromosphere glows red because hydrogen gives off a cherry-red likeness at these high temperatures. The corona 1. The corona is the extremely hot outermost layer above the chromosphere. 2. Temperatures in the corona rat reach over 1 000 000 ?C. 3. It is the thickest layer, stretching several billion 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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