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

Recall of intricate details, The three clinical nurse consultants working i...

The three clinical nurse consultants working in gastrointestinal surgery received 14 face-to-face hours of research training, including instruction in qualitative interview techniq

Egg or chicken, what comes first? egg or chicken?

what comes first? egg or chicken?

Shannons theorem, We know from Shannon's Theorem, Maximum data rate of a ch...

We know from Shannon's Theorem, Maximum data rate of a channel in bps (B) = Hlog2 ( 1+S/N ) _ 1 Where H = bandwidth in Hz S/N = signal-to-noise ratio We also know that Db = 10log10

What forces are important for generating wind, Question: a) Define atmo...

Question: a) Define atmospheric pressure, stating clearly its unit in meteorology. The atmospheric pressure at the foot of hill is 1013 hPa. What would be the pressure at th

Lab help, Which type of ripple marks would you expect to find on the floor ...

Which type of ripple marks would you expect to find on the floor of a standing body of waterion..

Physico-chemical properties of folic acid, Folic acid has the following imp...

Folic acid has the following important physico-chemical properties: a)  It is a yellow, spear-shaped crystalline  substance. b)  The compound is sparingly soluble in water.

#titleperiodic table, how do we arrange element in a periodic table

how do we arrange element in a periodic table

Explain an amniocentesis, Explain an Amniocentesis An amniocentesis is ...

Explain an Amniocentesis An amniocentesis is a process used to obtain a small sample of the amniotic fluid which surrounds the foetus to diagnose chromosomal disorders and open

Solar system, what is the meaning of heliospere

what is the meaning of heliospere

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