Zircon Crystals That Form in Molten Magma Are Easily Dated

question 5

Multiple Choice

Zircon crystals that form in molten magma are easily dated because they contain

• A) no lead.
• B) no uranium.
• C) uranium but no lead.
• D) lead but no uranium.
• E) both lead and uranium.

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Definitions:

Straight-Line Method

A depreciation technique that allocates an equal amount of depreciation to each year over the asset's useful life.

Double-Declining-Balance Method

A method of depreciation that provides for a declining periodic depreciation expense over the expected useful life of an asset.

Unamortized Premium

The portion of a bond's premium that has not yet been amortized or reduced over time through periodic charges to income.

Straight-Line Method

A method of calculating depreciation that allocates an equal amount of an asset's cost to each year of its useful life.