The Sun!

Fatimah Abdullah
Earth Science - Period 7
Mr. Taylor & Mrs. Rapoport

How was the sun formed?

From studies of other stars, it seems pretty convincing from the data that the sun must have started out as a large collapsing cloud of gas inside some ancient interstellar cloud. This cloud was polluted by a supernova several million years before the collapse phase ended. The cloud collapsed for millions of years until it formed a rotating disk with a large central bulge. Out of the disk would eventually form the planets, and out of this central bulge where most of the mass wound up, formed the sun.

http://image.gsfc.nasa.gov/poetry/ask/a11379.html

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When was the sun formed?

The sun was born roughly 4.6 billion years ago.

http://www.space.com/58-the-sun-formation-facts-and-characteristics.html

What chemicals make up the sun?

You see that hydrogen is by far the most abundant element in the Sun, followed by helium. Those two together make up 99.9 percent by number of the total atoms in the Sun!

http://imagine.gsfc.nasa.gov/docs/ask_astro/answer...

What Is the Fusion Reaction That Occurs in the Sun?

The fusion reaction that occurs in the sun is called nuclear fusion. In physics, this is a situation where at least two nuclei of atoms bind with each to produce a much more heavier nucleus. Nuclear fusion is the type of nuclear reaction that powers all stars in the universe, including the sun.

http://www.ask.com/question/fusion-reactions-occur...

When will the sun die out?

In approximately 5.5 billion years, the sun's gravity will no longer be able to hold its mass in. This is due to the constant loss of mass by the sun. It will expand greatly.

https://answers.yahoo.com/question/index?qid=20090...

What is a dark spot on the sun ?

Sunspots are temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. They are caused by intense magnetic activity, which inhibits convection by an effect comparable to the eddy current brake, forming areas of reduced surface temperature.

http://en.wikipedia.org/wiki/Sunspot

How much mass does the sun have?

The Sun has a mass of 2,000,000,000,000,000,000,000,000,000,000 kg.That’s 330,000 times the mass of the Earth.

http://www.suntrek.org/sun-as-a-star/suns-vital-st...

What is the structure of the sun?

The sun has an interior and an atmosphere. The interior includes the core, the radiation zone, and the convection zone. The sun's atmosphere includes the photosphere, the chromosphere, and the corona.

http://wiki.answers.com/Q/What_is_the_structure_of...

What kind of star is the sun?

The Sun is a G-type main-sequence star (G2V) based on spectral class and it is informally designated as a yellow dwarf.

http://en.wikipedia.org/wiki/Sun

How does the sun get its energy?

The Sun produces energy by the nuclear fusion of hydrogen into helium in its core. What that means is that, since there is a huge amount of hydrogen in the core, these atoms stick together and fuse into a helium atom. This energy is then radiated out from the core and moves across the solar system.

http://www.universetoday.com/75803/how-does-the-su...

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