The next time you snag a window seat on an airline flight, check out the planeâs wing. There is a good chance the tip of the wing will be angled upward, almost perpendicular. Or it might bend smoothly up like the tip of an eagleâs wing in flight. Though obviously more complex, these wing modifications have the same aerodynamic function as the folded wingtips of a paper airplane.
scoria - the scum formed by oxidation at the surface of molten metals. slag, dross. scum - a film of impurities or vegetation that can form on the surface of a liquid. basic slag - slag produced in making steel; low in silica but having large amounts of calcium phosphate; useful as fertilizer.
Beryl is the gem mineral of emerald, aquamarine, morganite, red beryl, heliodor and more. Scoria: A piece of scoria about 4 inches (10 centimeters) in diameter. A specimen with a rounded shape like this was most likely blown from a volcanic vent and would be appropriately called lapilli.his color difference is a result of their composition. Scoria forms from basaltic magmas while pumice forms from rhyolitic magmas-which usually contain a more gas. Pumice has a much higher concentration of trapped bubbles-so many that the walls between them are very thin.