The Sun Flashcards
Which surface of the sun is visible?
The photosphere
What is the most outer part of the suns atmosphere?
Solar corona
When is the solar corona visible
Eclipses or with use of coronagraph
What is the the temperature of the photosphere?
5780K
Why are the three parts of the interior of the sun?
Core
Radiation zone
Connection zone
What are the three parts of the atmosphere of the sun?
Chromosphere
Transition zone
Corona
How do we learn about the interior of the sun
Measure the red/blue shift on the surface, that’s are due to the movement sound waves below the surface. Then calculate time it take for the sound to travel between millions of points on the surface. Then nap the flow patterns
What is hydrostatic equilibrium?
It is the state that all stable stars are in. When the force of gravity is equal to the force of our word pressure from hot gas.
What is required for thermonuclear fusion?
E=mc2
About 15000000K
What are he 4 fundamental forces?
- gravity
- electromagnetic force
- weak nuclear force (radioactive decay)
- strong nuclear force (nuclear fusion, holding nucleus together)
What are magnetic field lines?
Charge particle flow a mantic field that penetrates through the surface of the sun, particles have a hard time moving away from said magnetic field lines
What is solar wind?
A sun spot the “explodes” rather than looping
What is the time of rotation of the gas at the equator of the sun and pols of the sun
Equator - 25 days
Poles - 30 days
