How Do Scientists Indicate the Power of a Volcanic Eruption

question 40

Multiple Choice

How do scientists indicate the power of a volcanic eruption?

• A) Viscosity charts
• B) Volcanic Explosivity Index
• C) Hawaiian volcanic index
• D) Dissolved gas charts
• E) Volcanic Eruptive Indicator

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Definitions:

Objective Lens

The part of a microscope closest to the object being observed, which focuses light or electrons to create an enlarged image.

Ocular Lenses

The lenses closest to the eyes in a microscope, binoculars, or other optical instruments, enhancing the user's ability to see small details.

Compound Microscope

An optical instrument consisting of a series of lenses that magnify objects in steps; used for detailed observation of microorganisms and cells.

Substage Illuminator

A light source located beneath the stage of a microscope, used to illuminate the specimen from below.