Discuss what volcanologists look for when trying to determine if a volcano is about to erupt
Volcanologists monitor and measure volcanoes they think might erupt. They look for any evidence that magma is moving upward in the volcano, such as changes in the slope or horizontal distances of volcanic cones. They also look for changes in magnetic or electrical fields and for gas emissions. Most importantly, they look for harmonic tremors. These are not the sharp earthquakes that commonly occur but they can last for hours and indicate magma movement.
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The concept of energy was unknown to
A. Isaac Newton. B. Albert Einstein. C. both of these D. none of the above
________ was one characteristic of socialist government policy in the cities of Eastern Europe
A) Large public housing projects in outlying districts B) Industrial zones in city centers C) Massive restructuring of city centers D) Destruction of all buildings closely related to capitalist activities
Which of the following is generally not included when writing an equilibrium constant expression?
A) liquids B) solids C) both a and b D) neither a nor b
Two layers of sediment resulting from one year's deposition in a glacial lake are called ________.
A. turbidites B. contourites C. ripples D. cross beds E. varves