DEFINITION of 'Aggregate Demand'. The total amount of goods and services demanded in the economy at a given overall price level and in a given time period. It is represented by the aggregate-demand curve, which describes the relationship between price levels and the quantity of output that firms are willing to provide. Normally there is a negative relationship between aggregate demand and the price level. Also known as total spending.
Answers. Best Answer: Up to about 120 decibels, which is about as loud as a gunshot. Some of the factors that affect the loudness are energy released, the environment, and of course the distance you are from the lightning.
A better way to classify storms is to base the categories on their actual physical characteristics. There is actually a continuous spectrum of thunderstorm types, but there are four broad categories of storms that will be discussed single cell storms, multicell cluster storms, multicell line storms, and supercell storms. Single cell thunderstorms have lifetimes of 20-30 minutes.