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Terms and definitions

Everything in this flashcard set.

lava
Rock that in its molten form issues from volcanos
cone
A visual receptor cell in the retina that is sensitive to bright light and to color
destructive
Causing ___ or much damage
conservative
A person who is reluctant to accept changes and new ideas
constructive
Emphasizing what is laudable or hopeful or to the good
heat
Energy that makes things warm
plate
Base consisting of a rubber slab where the batter stands
friction
A state of conflict between persons
trench
A ditch dug as a fortification having a parapet of the excavated earth
vent
A fissure in the earth's crust through which molten lava and gases erupt
pumice
A light glass formed on the surface of some lavas
crater
A bowl-shaped geological formation at the top of a volcano
ash
The residue that remains when something is burned
gas
State of matter that fills any space, like air

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