Write as a Number

question 67

Multiple Choice

Write as a number.
-Round 7473 to thousands.

• A) 6900
• B) 8000
• C) 7000
• D) 7100

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Definitions:

National Priority List

A list in the United States that identifies sites that are priorities for investigation and cleanup because they release or threaten to release hazardous substances.

Comprehensive Environmental Response, Compensation, and Liability Act

A U.S. federal law, established to clean up sites contaminated with hazardous substances and pollutants.

Alpha Particle

A type of ionizing radiation consisting of two protons and two neutrons, emitted from the nucleus of an atom during radioactive decay.

Atomic Nucleus

The central core of an atom, containing protons and neutrons and holding most of the atom's mass.