What fraction of the earth’s gravity is the moon’s gravity?

The acceleration due to gravity on the moon´s surface is 1/6 of that on Earth.

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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.