deep waters of seas and oceans because the deep waters have a higher density than the waters above them. Internal waves act like surface waves. They can also break, just like surface waves. Internal waves cannot be seen by the human eye, but they can be detected by studying temperature or salinity changes at a given location.1 G) The Qur’an on Clouds: Scientists have studied cloud types and have realized that rain clouds are formed and shaped according to definite systems and certain steps connected with certain types of wind and clouds. One kind of rain cloud is the cumulonimbus cloud. Meteorologists have studied how cumulonimbus clouds are formed and how they produce rain, hail, and lightning. They have found that cumulonimbus clouds go through the following steps to produce rain: 1) The clouds are pushed by the wind: Cumulonimbus clouds begin to form when wind pushes some small pieces of clouds (cumulus clouds) to an area where these clouds converge (see figures 17 and 18). Figure 17: Satellite photo showing the clouds moving towards the convergence areas B, C, and D. The arrows indicate the directions of the wind. (The Use of Satellite Pictures in Weather Analysis and Forecasting, Anderson and others, p. 188.) Chapter 1 Some Evidence for the Truth of Islam G) The Qur’an on Clouds A Brief Illustrated Guide To Understanding Islam 22 (1) Oceanography, Gross, p. 205.
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