SOLAR SYSTEM

Detailed explanation-1: -There is evidence that the materials within the earth form distinct layers, each with a different density. Most of this evidence comes from observations of seismic waves, the vibrations generated by earthquakes or explosions.

Detailed explanation-2: -Earth has three layers: the crust, the mantle, and the core. The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.

Detailed explanation-3: -The continental crust is composed mostly of granite. The oceanic crust consists of a volcanic lava rock called basalt. Basaltic rocks of the ocean plates are much denser and heavier than the granitic rock of the continental plates.

Detailed explanation-4: -The structure of the earth is divided into four major components: the crust, the mantle, the outer core, and the inner core.

Detailed explanation-5: -Which one of the following is not a layer of earth? Nickel is not a layer of earth.