When Gas Escapes Quickly and Violently from Lava It May

question 37

True/False

When gas escapes quickly and violently from lava it may produce a frothy glass full of holes left by former gas bubbles;this porous material,known as pumice,contains so many holes it can float on water.

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Definitions:

Intermediate

Positioned between two extremes or in the middle of a range, often referring to a level of skill, difficulty, or complexity that is not basic but not advanced either.

Impersonal

Lacking personal interest, attachment, or warmth; not relating to or influenced by personal feelings.

Sustained Attention

The ability to maintain attention to a selected stimulus for a prolonged period of time.

Selected Stimulus

A specific environmental event or condition selected by a researcher to observe its effects on the behavior of an organism.