One way to monitor global warming is to measure the average temperature of the ocean. Researchers are doing this by measuring the time it takes sound pulses to travel underwater over large distances. At a depth of 1000 m, where ocean temperatures hold steady near 4∘C, the average sound speed is 1480m/s. It's known from laboratory measurements that the sound speed increases 4.0m/s for every 1.0∘C increase in temperature. In one experiment, where sounds generated near California are detected in the South Pacific, the sound waves travel 7600 km.If the smallest time change that can be reliably detected is 1.0 s, what is the smallest change in average temperature that can be measured?

Global warming is the rise in the temperature of the entire earth and there leading to the rise of sea levels around the globe. As per the question about the average temperature of the oceans the research measures the time taken for sound waves to reach larger distances. Taking a depth of 1000 meters.

Answer rise temperatures the rise of speed of sound generated is equal to 0.07° C.

The scientist monitored the level of the oceanic changes from the depth of 1000 meters. The ocean temperatures stood steady for 4° C and the average sound made was known o the lab at 4.0 m/s for every 1.0° C rise in temperatures.

The sound waves traveled the pacific at a 7600 km rate and the smallest changes were made as 1.0 sec. The smallest its changes thus could be observed were as 0.07°C.

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