Obsidian Is an Igenous Rock with a Glassy Appearance and Minimal

question 19

Multiple Choice

Obsidian is an igenous rock with a glassy appearance and minimal crystal growth. What accounts for this?

• A) Obsidian is an intrusive igneous rock that cooled slowly beneath the Earth's surface, result in little crystal growth.
• B) Obsidian is an extrusive igneous rock that cooled slowly on the Earth surface, resulting in little crystal growth.
• C) Obsidian is an extrusive igneous rock that cooled very slowly on the Earth surface, resulting in little crystal growth.
• D) Obsidian is an intrusive igneous rock that cooled rapidly beneath the Earth's surface, result in little crystal growth.

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Definitions:

Risk-Free Rate

The return on an investment with no risk of financial loss, often represented by government bonds.

Annualized Return

A rate of return that standardizes an investment's earnings to a one-year period, making comparison with other investments easier.

Holding Period

The length of time an investment is held by an investor before being sold.

Riskless Arbitrage

A financial strategy that aims to profit from discrepancies in the price of identical or similar financial instruments on different markets or in different forms without risk.