It is the Pumice. It is a light-hued, greatly permeable molten shake that structures amid dangerous volcanic emissions. It is utilized as total in lightweight cement, as finishing total, and as a rough in an assortment of modern and purchaser items. Numerous examples have a sufficiently high porosity that they can skim on water until the point when they gradually end up noticeably waterlogged.
Magma that explodes from a volcano and solidifies in the air is called ASH
Answer:
primary waves pass through the outer core but shear waves do not.
Explanation:
The evidence which best supports the inference that the Earth's outer core possesses liquid characteristics is that, primary waves pass through the outer core but shear waves do not.
This ultimately implies that, the Earth's outer core possesses liquid characteristics because it allows primary waves only to pass through but not shear waves.