2) what kinds of geographic forces were involved in the christmas day tsunami

The Christmas Day Tsunami was caused by a very strong earthquake that has the same impact of the Hiroshima atomic bombing in Japan.

Because of the strong tectonic movement, it had displacement plates and thus created a major wiped out among the cities of Sumatra and Sri Lanka

Many of the citizens were not prepared because there was no advice from the government of the impending tsunami. Many people have died because of the tsunami waves in the affected areas.

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.