Answer:
Radiative heat transfer occurs at radii beneath the covective zone.
Step-by-step explanation:
The helioseismology studies have provided insights into the interior of the Sun, and among the given options:
1. "The deep interior of the Sun rotates like a solid body." - This statement is not confirmed by helioseismology studies. Helioseismology has shown that the rotation of the Sun's interior is not like a solid body; instead, it exhibits differential rotation, where different layers rotate at different rates.
2. "Nuclear fusion occurs only within the core of the Sun." - This statement is generally known and supported by helioseismology. Nuclear fusion primarily occurs in the core of the Sun, where the conditions are suitable for sustained fusion reactions.
3. "Magnetic fields block the outward flow of energy in sunspots." - This statement is not directly confirmed by helioseismology studies. The behavior of magnetic fields in sunspots is more related to solar magnetism and is studied using different methods.
4. "Convection occurs only in the upper 30% of the solar interior." - This statement is not accurate. Helioseismology has revealed that convection occurs in the outer portion of the Sun's interior, specifically in the outer 30% of the solar interior, known as the convective zone.
5. "Radiative heat transfer occurs at radii beneath the convective zone." - This statement is correct. Helioseismology studies have confirmed that beneath the convective zone, the transfer of energy is primarily through radiative processes. This region is known as the radiative zone.
- So, the statement "Radiative heat transfer occurs at radii beneath the convective zone" is confirmed by helioseismology studies.