The Sky Will Begin to Turn Milky White

question 22

Multiple Choice

The sky will begin to turn milky white

• A) when the concentration of ozone begins to reach dangerous levels.
• B) when small particles such as dust and salt become suspended in the air.
• C) when the relative humidity decreases below about ten percent.
• D) on an oppressively hot day of the year.

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Definitions:

Nitrogen

A chemical element with symbol N and atomic number 7, essential for all living organisms as it is a major component of amino acids and nucleic acids.

Kinetic Energy

The energy possessed by an object due to its motion, dependent on the object’s mass and velocity.

Reaction

A process in which substances interact to form new products, often characterized by a change in energy.

Product(s)

Items or substances that are the result of a process or activity, which can be tangible goods or intangible services.