Multiple choice general knowledge science & technology

What do you call the visible surface of the sun, which is the layer below which the sun becomes opaque to visible light?

  1. Photosphere

  2. Solsphere

  3. Neurosphere

  4. Hydrosphere

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The photosphere is the visible 'surface' of the Sun - the layer from which most visible light is emitted. Below the photosphere, the Sun becomes opaque to visible light because of increasing density. Above the photosphere are the chromosphere and corona. 'Solsphere,' 'neurosphere,' and 'hydrosphere' are not real solar atmospheric layers (hydrosphere refers to Earth's water).