Homework Help: Physical Science

Posted by Rachel on Monday, March 10, 2008 at 6:10pm.

The heat of volcanoes and hot springs comes from trace amounts of radioactive minerals found in the Earth's interior. Why isn't the same rock at the Earth's surface warm?

Physical Science - SraJMcGin, Monday, March 10, 2008 at 6:32pm
From Britannica Online:

Hot springs and geysers also are manifestations of volcanic activity. They result from the interaction of groundwater with magma or with solidified but still-hot igneous rocks at shallow depths.
Physical Science - Angel, Thursday, September 15, 2011 at 12:25am
A microwave oven has a power requirement of 1248 W. A frozen dinner requires 4.1 min to heat on full power. How much electrical energy (in kWh) is used?

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