Quick Answer. Amplitude in an oscillating system is the measure of change with each oscillation within the system and is a general indicator for the amount of energy contained in a wave. For example, the amplitude of a sound wave is a measure of its volume.
The Sumerians were the first Mesopotamian civilization. They lived in independent walled city-states. Uruk, the first and one of the largest cities in Mesopotamia, had a six miles long wall with defense towers located at 30-35 foot intervals.he Sumerians were the first Mesopotamian civilization. They lived in independent walled city-states. Uruk, the first and one of the largest cities in Mesopotamia, had a six miles long wall with defense towers located at 30-35 foot intervals.
Reliable historical records begin much later; there are none in Sumer of any kind that have been dated before Enmebaragesi (c. 26th century BC). Professor Juris Zarins believes the Sumerians were settled along the coast of Eastern Arabia, today's Persian Gulf region, before it flooded at the end of the Ice Age.