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Polaris (north star)

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by

Katie Ball

on 10 February 2016

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Transcript of Polaris (north star)

Polaris Vs Our Sun
Temperature

Polaris has surface temperatures of around 5,700C (10,300F)
Polaris Vs Sun Apparent Magnitude
Solar Radii
Polaris Vs our Sun Absolute Magnitude
Chemical Composition
Works Cited
Polaris (North Star)
The Sun has a surface temperature of about 10,000
F (5,600 C)

An Absolute Magnitude is the measure of intrinsic brightness of a star.
Polaris Absolute Magnitude is -3.64.
The Sun's Absolute Magnitude is 4.2.

Polaris as a Apparent Magnitude of 2.02. 48 brightest star.
The sun has a Apparent Magnitude of -26.74.
An Apparent Magnitude is to describe how bright an object appears in the sky from earth.
Polaris is looks blue from earth and is white if you are close to it.
A Solar Radii is the unit of distance used to the size of stars in astronomy. Also called the solar radius.

Polaris has a radius of around 22 million miles ( 35 Million KM), Which is around 50 times the size of the sun.

The Sun has a radius of 432,450 miles (696,000 KM)


Chemical composition refers to the arrangement, type, and ratio of atoms in molecules of chemical substances. Chemical composition varies when chemicals are added or subtracted from a substance, when the ratio of substances changes, or when other chemical changes occur in chemicals.
Polaris in the outer atmosphere is is made out of similar elements that the sun has in it's outer atmosphere (75% Hydrogen, 24% Helium and 1% other elements).
The sun's atmosphere is made out of hydrogen and helium. ( 70% hydrogen,28% helium,1.5% carbon,nitrogen and oxygen and 0.5% all other elements.
My star is similar to the sun because Polaris is made out of similar elements that the sun is made of like hydrogen and helium. But Polaris has more of the elements because Polaris is bigger that the sun.( side 5).
Constellation
Polaris is apart of the Ursa Minor
Arcas was the son of Callisto, who was transformed by Juno into a bear. When Arcas was fifteen, he was out hunting in the forest when he came across a bear. The bear behaved quite strangely, looking him in the eyes. He of course could not recognize his mother in her strange shape, and was preparing to shoot her when Jupiter prevented him. Arcas was transformed into a bear like his mother, and the two were taken up into the sky. Juno was annoyed that the pair should be given such honor, and took her revenge by convincing Poseidon to forbid them from bathing in the sea. It is for this reason that Ursa Major and Ursa Minor are both circumpolar constellations, never dipping beneath the horizon when viewed from northern latitudes.
Ursa Minor is better known as the Little Dipper.
Polaris is the North Star | Brightest Stars | EarthSky
earthsky.org/brightest-stars/polaris-the-present-day-north-star
By Bruce McClare last updated on May 26,2015
www.space.com/15567-north-star-polaris.html
by Joe Rao Last updated on May 7,2012
www.space.com/58-the-sun-formation-facts-and-characteristic.html
By Charles q.Chai Last updated on November 20,2014
earthsky.org/brightest-stars/polaris-the-present-day-north-star
By Bruce McClare McClare Last updated on May 26,2015
Full transcript