Monday, December 3, 2012

Comet - Another member of Solar System

Comet - Another member of Solar System.

What is a comet?

Comets are basically dusty snowballs which orbit the sun. They are made of ices, such as water, carbon dioxide, ammonia and methane, mixed with dust. These materials came from the time when the solar system was formed. Comets have an icy center (nucleus) surrounded by a large cloud of gas and dust (called the coma). The coma is created as the ice in the nucleus is warmed by the sun and vaporizes. Comets can develop 2 tails as they travel closer to the sun, a straight gas tail and a curved dust tail. The gas tail is created by the solar wind, whose magnetic fields pull the gas away from the comet's coma. The dust in the coma is not affected by magnetic fields but is vaporized by the sun's heat, and forms a curved tail which follows the comet's orbit.



18 comments:

Rosar Chua Sing Sing said...

Cikgu,nota ini amat berguna untuk pelajar.

Rosar Chua Sing Sing said...

Cikgu, nota ini amat berguna.

Chai Tan Ning(D20112053788) said...

Terima kasih.

Anonymous said...

This comet is interesting.

Cecillia Lim Gek Yong said...

Anak saya, Melissa Pui amat suka melayari blog cikgu.Terima kasih.











Jong Kui Fiu said...

Nota cikgu sangat bermanfaat.

Jong Kui Fiu said...

Nota cikgu sangat bermanfaat.

Jong Kui Fiu said...

Nota ini sangat bermanfaat.

Anonymous said...

Nota cikgu sangat bermanfaat.

Jong Kui Fiu said...

Nota cikgu sangat bermanfaat.

Bong Ching Ching said...

Tahniah cikgu kerana telah menghasilkan blog yang bermanfaat bagi ilmu pengetahuan bidang Sains.

Chai Tan Ning(D20112053788) said...









Thank you

soo meegion said...

Thanks for sharing.

Chai Tan Ning(D20112053788) said...

You are wellcome.

Wong Lee Na said...

Blog yang menarik!

Wong Lee Na said...

Blog yang menarik!

Wong Lee Na said...

Blog yang menarik!

Chai Tan Ning(D20112053788) said...

Thank you for your support.