Sun, Science

Assignment Help:

The Sun is the most  important star from our point of view.  It is the only star close enough to be studied in considerable detail. The grandeur of  the Sun is partly because of  its size. Its diameter is almost  110  times that of  the Earth. We can best visualise the volume of  the Sun if we realise  that more than a million earths can be dropped into the space it occupies. As we have said above, the mass of  the Sun is about 2 X 1033 grams, which makes it more than 300,000 times  the mass of  the Earth. The average density of the Sun, i.e..  its mass per unit volume, is about 1.4 g/cm3. 

 

1171_Sun.png

Although the Sun appears to be unchanging, it  rotates about  its axis once every 25 days. From time to  time dark patches appear on the surface of  the Sun, usually in pairsor in groups. These dark patches are called sunspots. Their movement  is an indication of  the Sun's  rotation. This fact was recognised  for the first tiine by Galileo. Actually, a sunspatis  a regiim cn  the surface  of the S&  that consists of gases almkt 10000c cooler than those surrounding the area. The number of  sunspots  increases and decreases in a cyclc every  11  years. In  the long term, there are periods of  low number of sunspots and High'number  of  sunspots.  


Related Discussions:- Sun

Define the electrolytes in urine, Define the Electrolytes in Urine Elec...

Define the Electrolytes in Urine Electrolytes: Estimation of urine chloride, sodium, potassium is of significant importance when the electrolyte balance is disturbed.

Eyes, information about the eyes

information about the eyes

Define the microwave processing, Define  the Microwave Processing Food...

Define  the Microwave Processing Food industry, in the recent years, has witnessed the emergence of microwave oven as a substitute for thermal oven for a number of food process

Sun, how much far sun from earth

how much far sun from earth

Factors which decide the br, factors which decide the broad area of Scienti...

factors which decide the broad area of Scientific activity

SURVEYIN, how to overcome river in chain surveying

how to overcome river in chain surveying

Vitamins, Vitamins: You are, probably, familiar with the names of some ...

Vitamins: You are, probably, familiar with the names of some of the vitamins. They can be obtained from plant and animal foods. Vitamins are required in small amounts and their

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd