Astronomy - Final Test; The Sun
Core
All the suns heat and light energy is produced in the ____ as hydrogen is converted to helium during nuclear fusion. The temperature of this is 25 millions degrees.
In a total solar eclipse.
When is the corona visible?
It is the core of life
What are the effects of the sun's massive size?
Yellow
What is the color of the sun?
Hydrogen, helium
What is the sun's composition?
Convection currents
What is the transfer of energy due to temperature and density differences?
Nebula, 5
Our sun formed from a ______ approximately _ million years ago?
Radiation Zone
Energy is transferred away from the core by shortwave ultraviolet radiation. It takes 20,000-40,000 years away.
Convection Zone
Energy is transferred to the sun's surface by convection currents.
Shortwave ultraviolet radiation
In the radiation zone, in what form is energy transferred away from the core?
Chromosphere
The sun's lower atmosphere, and it is red.
Corona
The sun's outer atmosphere, the temperature of it rises.
Photosphere
The visible surface of the Sun, it is 10,000 degrees.
Invisible to naked eye, need a solar lens
Why can't you see the chromosphere?
Abundance of hydrogen.
Why is the chromosphere red?
99.8
____% of the mass of our solar system is the sun!