Why Do Composite Volcanoes Consist of Alternating Lava and Pyroclastic

question 40

Multiple Choice

Why do composite volcanoes consist of alternating lava and pyroclastic layers?

• A)Composite cones are created by lava composition alternating between basalt and rhyolite.
• B)Composite cones typically are interlayered with lava flows from nearby shield volcanoes.
• C)Composite cones are created by a mixture of explosive activity and lava flows.
• D)The lavas in composite cones are typically rhyolitic in composition.

---

Definitions:

Sophomores

Second-year students in a four-year degree program at a high school or university.

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it marks the threshold for significance.

Hypotheses

Proposed explanations or predictions that can be tested through research and experimentation.

T-statistic

A type of statistic used to estimate the population parameter based on a sample statistic.