Explosive or Voluminous Eruptions May Cause a Volcano to Subside

question 54

Multiple Choice

Explosive or voluminous eruptions may cause a volcano to subside or collapse into the now-empty magma chamber,producing a broad depression termed a ________.

• A) crater
• B) lahar
• C) caldera
• D) fissure

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Definitions:

V(X)

The variance of a random variable X, representing the expectation of the squared deviation of X from its mean.

V(Y)

The notation for the variance of a random variable Y, measuring the spread of its values.

Joint Probability

The probability of two events occurring together or at the same point in time.

E(XY)

The expected value of the product of two random variables, indicating their joint variability.