Why is weight of an object more on earth than on moon

Because of mass the moon has way less mass than the earth so you way more on earth than on the moon. Hope this helps

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.

The answer is d., a mountain.