How do scientists use earthquakes to determine if a volcano may erupt soon?
What will be an ideal response?
Answer: Earthquakes centered under the volcano with foci that are increasingly shallow are a sign magma is moving into the magma chamber. A strong precursor to eruptions is often a period of seismic unrest followed by a period of relative quiet.
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Which localized winds develop in colder upland areas and blow downslope pulled by gravity?
A. Santa Ana winds B. valley breezes C. chinook winds D. mountain breezes E. katabatic winds
The horizon where leaching has deposited materials is called the ________
A) O horizon B) E horizon C) B horizon D) C horizon E) parent material
Why might you describe Alaska as an "island"?
Which of the following events is not associated with climate change?
A. a volcanic eruption B. an earthquake over magnitude 8.0 C. an increase in the level of water vapor in the atmosphere D. deforestation