layers of the sun

• corona- outermost part of the sun's atmosphere
• corona - usually hidden by the bright light of the sun's surface
• total solar eclipse - when corona can be viewed
• chromosphere - appears bright red
• hydrogen in the sun - because of this, the chromosphere appears bright red
• at high temperature - when does hydrogen in the sun emit red light
• chromosphere - thin layer of plasma that lies between sun's photosphere and corona
• corona - sun's upper atmosphere
• photosphere - surface of the sun
• photosphere - cooler than its neighboring layers
• sunspots - cooler than photosphere
• photosphere - "sphere" of light
• photosphere - part of the sun that we can see even without any equipment
• core - center of the sun
• 1/2 - about what part the sun's mass is in the core
• core - made of gas but is more dense than lead
• core - hottest region
• core - site of nuclear fusion
• density and temperature conditions are high enough - why does nuclear fusion occur in the core of the sun
• radiation zone - layer just outside the sun's core
• radiation zone - where photons of light carry energy created through nuclear fusion towards the surface
• thermal radiation - as what do photons of light carry energy created through nuclear fusion towards the surface in the radiation zone
• convection zone - where energy is transported in gases to the photosphere through convection currents
• nearest to radiation zone - where gas/plasma is hottest
• nearest to photosphere - where gas/plasma is the coolest and denser
• denser - as you move from space toward the Sun's core, the gas gets what?
• photosphere - represents the depth at which we can see no deeper toward the core of the sun
• denser gas - as heated gas rises to the surface, what sinks?