The sun
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The Sun. By: Sam Belanger. What is it?. The sun is G2 star Closest star to Earth Contains: hydrogen 70%, 28% helium, metals and other materials 2% Largest object in our solar system Contains 99.8% of the solar systems total mass Cant live without it Estimated 4.5 billion years old.

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The Sun

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The sun

The Sun

By: Sam Belanger


What is it

What is it?

  • The sun is G2 star

  • Closest star to Earth

  • Contains: hydrogen 70%, 28% helium, metals and other materials 2%

  • Largest object in our solar system

  • Contains 99.8% of the solar systems total mass

  • Cant live without it

  • Estimated 4.5 billion years old


Sun materials

Sun Materials


Characteristics

Characteristics

  • Diameter: 1,390,000 km( 109 times the earth)

  • Mass: 1.989e30 kg

  • Temperature: about 27 million degrees Fahrenheit

  • 93 million miles away from earth

  • So large that its gravity is able to hold all of the planets in orbit


Purpose

Purpose

  • The sun is necessary for our survival

  • The light from the sun heats our planet and makes life possible

  • Eventually in an estimated 5 billion years, the sun will evolve into a red giant star and will no longer heat the earth

  • Gets its energy from a process called nuclear fusion


Layers

Layers

  • Photosphere: visible surface of the sun that is about 600 km thick

  • Chromosphere: thin region below the corona, about 3,000 km thick

  • Corona: forms the sun’s outer atmosphere, and can extend outward a distance equal to 10-12 times the diameter of the sun

  • Core: the center of the sun, where the energy is produced-temperature around 15,000,000 degrees Celsius


Solar flares

Solar Flares

  • A solar flare is a basically a huge explosion on the sun

  • Flares occur when intense magnetic fields on the sun become too tangled

  • They emit huge bursts of electromagnetic radiation including x rays, ultraviolet radiation, visible light, and radio waves

  • A sunspot, or a cooler, dark spot on the sun can also appear


Solar eclipse

Solar Eclipse

  • Sometimes the moon comes between the Earth and the sun

  • This event is called a solar eclipse

  • If the moon is partially over the sun its known as a partial eclipse, or if its completely blocked, a total eclipse

  • Happen usually once or twice a year

  • Can be harmful if looked at


Cool facts

Cool Facts

  • 1 million earths could fit in the sun

  • The sun’s core is 150 times denser than that of water

  • The sun is one of about 2 billion stars in the Milky Way galaxy

  • The suns energy is about 386 billion billion megawatts

  • A man weighing 60 kg on earth would weigh 1680 kg on the sun

  • Einstein’s equation E=MC^2 changed ideas about the sun’s energy source by equating mass and energy


Resources

Resources

  • http://www.windows2universe.org/sun/sun.html

  • http://nineplanets.org/sol.html

  • http://free.co.uk//sunsets/Landscapes-Road-to-the-Sun/

  • Science text book

  • http://curious.astro.cornell.edu/images/xraysun.gif

  • http://cosmicpsychic.com/wp-content/uploads/2010/06/TotalSolarEclipse.jpg

  • http://www.barewalls.com/i/c/602106_Gacrux-the-prominent-red-giant-star-located-in-the-constellation-Crux.jpg

  • http://www.newscientist.com/data/images/ns/cms/dn9824/dn9824-1_831.jpg


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