The Sun Review

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__% Carbon atoms in the Sun ___% of total mass

0.043% and 0.40%

__% Oxygen atoms in the Sun ___% of total mass

0.078 and 0.97

What is the SUn's mass?

1.99*10^30 kg

How many earth;s does it take to go acorss the sun?

100

How long is the Sunspot cycle?

11 years

The average density of the Sun

1410 kg/m^3

Convection zone in km

200,000 km

How many kilometers to the sun

200,000 km

How long is the Solar Cycle?

22 years

Sun's rotation period

24.9 days (equator); 29.8 days (poles)

In light-years how big is parsec?

3.3 years

SUn's luminosity

3.86 10^26 Watts

Radiation zone

300,000 km

the Photosphere

500 km

Sun's surface temperature

5780K

What is the temperature of the Sun on the surface?

6000 K

What is the Sun's radius?

696,000 km (100 Earth Radii)

__% Helium atoms in the Sun ___% of total mass

8.7% and 27.1%

___% Hydrogen atoms in the Sun ___% total mass

91.2% and 71%

Definition of a star

A glowing ball of gas held together by its gravity and powered by nuclear fusion.

Mass--_____--______

Binary star system, Kepler's 3rd law

If a main sequence star with a mass less than the Sun what quadrant?

Lower right

Can a white dwarf go nova by itself?

No; has to have binary star

If you want to measure temeprature what law?

Wiens law

How many Earth's would it take to fill up the SUn?

a million

What is the suns lifetime?

about 10 billion years

Whats the core temperature?

around 15 million in the core

Apparent magnitude scale is talking about ?

brightness

If you know luminosity and brightness you can calculate?

distance

What do you get from parallax?

distance

Where is the energy produced in the Sun?(i.e. where is the fusion occurring AND what elements are involved in the fusion process)?

energy is produced at the core from hydrogen and helium

What is the name we use for the state that the size of the defines sun? (2 things)

gravity and gas pressure

• What is it called when 2 forces cancel each other out

hydrostatic equilibrium

What quadrant are white dwarves found in?

lower left

WHats the Chandrasekhar limit

mass difference between a white dwarf and neutron star?

what is the absolute magnitude?

measure of its luminosity

*****What we see and call the 'surface' of the Sun

photosphere

Radial velocity--____--_____

red shift/blue shift, Doppler's Effect

IF you want to measure radiu

stefan boltman

Where on the main sequence would ultimately be Type 2 supernova explosions?

upper left

WHere are red giants found?

upper right


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