The Rock Pumice Often Floats Yet the Density of the Rock

question 80

Multiple Choice

The rock pumice often floats yet the density of the rock is greater than water.Why does it float?

• A)Pumice is a pyroclastic rock derived from rhyolite glass,and rhyolite glass has a lower density than water.
• B)Pumice is a pyroclastic rock comprised largely of open voids formed by gases released when the magma solidified as froth-like material.
• C)Pumice is a rock made of rhyolite glass that erupts into water,which traps water in voids and makes the material less dense than water.
• D)Pumice is another name for dacite,a low-density rock that floats in water.

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Definitions:

Price War

A competitive business strategy in which companies repeatedly cut prices to undercut competitors, often resulting in reduced profit margins for everyone involved.

Tacit Collusion

An unspoken, informal agreement among competitors to avoid certain competitive practices, like price wars, to keep prices at a certain level or to divide markets.

Oligopolistic Firms

Companies that operate in an oligopoly, a market structure with a small number of firms that have significant market power, which influences their pricing and production decisions.

Product Differentiation

The approach of identifying unique aspects of a product or service to boost its attractiveness to a designated target market.