Most Normal Adults Have a Memory Span

question 101

Multiple Choice

Most normal adults have a memory span:

• A)of between 5 and 9 items.
• B)that averages 7.
• C)of 7 plus-or-minus 2.
• D)all of the above.

---

Definitions:

Richter Scale

A logarithmic scale used to measure the magnitude of earthquakes, based on the amplitude of seismic waves recorded on a seismograph.

Mercalli Scale

A scale that measures the intensity of an earthquake based on its observed effects on people, objects, and structures, rather than its energy.

Urban Fires

Fires that occur in cities or towns, which can involve buildings, vehicles, and other man-made structures.

Horizontal Displacement

The distance an object or particle moves horizontally over a period of time, often measured in physics and engineering contexts.