Crona
- Outer layer only seen when sun is blocked e.g solar eclipse
- Very thin layer stretches out into space
Cromosphere
- Red appearance
- 2,000km thick
- Range from 6,000°C-50,000°C
- Hydrogen layer
- Jagged layers that looks like flames
- 32,000km-400,000km flames reach
- Flames last few days/ weeks
Photosphere
- Apparent surface of sun
- Completely made of gas
- Not a solid
- Gas becomes dense and we carn’t see it
- Coolest part of sun 6,000°C
- Gas is thin so atoms can be absorbed and release energy
- Sun spots are dark cooler spots that can be seen pn the surface of the sun
- They are cooler then the surrounding gas
- They can last from 1 hour to several months
Radiation Layer
- High temperatures 14,000,000°C this is where fusion of hydrogen nuclei takes place
- Energy from the core is passed randomly from atom to atom until it reaches the radiation zone, it takes 170,000 years for energy from the core to reach it
- It is cooler than the core, so, some atoms are able to remain intact and absorb energy
Core
- Source of the Sun’s energy
- Keeps energy output constant
- Filled with compact hydrogen atoms
- Over 4 billion degrees protons and neutrons bounce around creating plasma, nuclear reactions energy
- High temperature and density create fusions.