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Ray Atkinson
Ray Atkinson, Graduate Student
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Which of the following statements about volcanic gases is FALSE?

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Which of the following statements about volcanic gases is FALSE?
1)Volcanic gases are natural sources of air pollution.
2)Volcanic gas samples are difficult to obtain.
3)Volcanic gases are released when pressure drops.
4)Carbon dioxide is the primary component of most volcanic gases
Which of the following statements is FALSE?
Cinder cones are built from ejected lava fragments and are usually less than 300 meters high.
Calderas are large collapsed depressions having more or less circular form.
Most volcanoes are fed magma through short conduits called pipes that connect a magma chamber to the surface.
Sills are tabular discordant bodies that are produced when magma is injected into fractures
Which of the following statements is TRUE?
Relative dating tells us how long ago something existed.
Disconformities are less common but usually far more conspicuous because the strata on either side are essentially parallel.
Estimates indicate that the North American continent is being lowered at a rate of about 10 centimeters per 1000 years.
Most volcanoes are fed by conduits or pipes.
Submitted: 2 years ago.
Category: Homework
Expert:  Ray Atkinson replied 2 years ago.

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