When you looked at the thermometer last night, the temperature was 0° c. by morning, the temperature rose 10°. by afternoon, the temperature had risen another 5°. throughout the night, the temperature dropped 20°. what is the temperature now?

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.