Why Doesn't Uranium Ore Spontaneously Undergo a Chain Reaction

question 9

Multiple Choice

Why doesn't uranium ore spontaneously undergo a chain reaction?

• A)Uranium ore must be "weapons' grade" in order for it to undergo chain reaction.
• B)Uranium ore is mostly non-fissionable isotope U-238 and undergoes a chain reaction only if mixed with a moderator to slow down the neutrons.
• C)Uranium ore does spontaneously undergo slow chain reaction over time finally resulting in it becoming lead.
• D)Uranium ore,mostly U-235,must be enriched with U-238 in order for it to undergo a chain reaction.

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Definitions:

Evaporation

The process by which liquid water transforms into vapor or gas, often driven by heat from the sun.

Precipitation

Any type of water, whether in liquid or solid state, descending from the sky to the earth's surface, encompassing phenomena like rain, snow, sleet, and hail.

Acre-Foot

A unit of volume used in the United States to measure large-scale water resources, such as in reservoirs or irrigation, equal to the volume of water required to cover one acre of land one foot deep.

Football Fields

Standard units of measurement representing the playing area for American football, approximately 360 feet in length and 160 feet in width.