Kyphosis (from Greek ÎºÏÏÏÏ kyphos, a hump) refers to the abnormally excessive convex kyphotic curvature of the spine as it occurs in the cervical, thoracic and sacral regions.
Aporia is an expression of insincere doubt. Clear definition and great examples of Aporia. This article will show you the importance of Aporia and how to use it.
Scoria is the vesicular ejecta of mafic to intermediate magmas such as basalt and andesite. Scoria is generally a dark brownish black or red. Its specific gravity ranges from 0.8 to 2.1. Scoria is generally thought of as the mafic version of pumice. It forms when magma rich in dissolved gases is vented. As the magma encounters lower pressures, the gases are able to escape and form vessicles.