If Air Pressure Is Reduced by One- Half for Every

question 104

Multiple Choice

If air pressure is reduced by one- half for every five- kilometer increase in altitude, what would be the air pressure at a height of 25 kilometers as a fraction of sea- level air pressure?

• A) 1/64
• B) 1/8
• C) 1/16
• D) 1/32

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Definitions:

Alpha Particle Emission

A type of radioactive decay in which an atomic nucleus releases an alpha particle (2 protons and 2 neutrons) and transforms into an atom with a mass number 4 units less and atomic number 2 units less.

Beta Particle Emission

A radioactive decay process where a beta particle (electron or positron) is emitted from an atomic nucleus.

Alpha Particle Emission

A type of radioactive decay in which an unstable atomic nucleus emits an alpha particle (2 protons and 2 neutrons) to form a new nucleus, decreasing its atomic number by 2 and mass number by 4.

Positron Particle Emission

A type of beta decay in which a positron is ejected from an atomic nucleus, transforming a proton into a neutron.