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Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Shadow zone
xShadow zone : The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being b
A new study shows that water might have been on Earth very early in its history. Before this new information, scientists thought water came to Earth from comets. Scientists have learned this by studying...Read more