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ScienceExamReview7
Chap 7 vocab
Question | Answer |
---|---|
Jagged chunks of lava formed by rapid cooling on the surface of a lava flow | aa |
Steep-sloped deposit of solid fragments ejected from a volcano | Cinder cone |
Steep-sloped volcanic deposit with alternating layers of hardened lava flows and tephra | Composite cone |
Crack in a rock surface through which lava flows | Fissure |
Magma that reaches the earths surface | Lava |
Liquid rock produced deep inside the earth | Magma |
Solidified mafic lava with a wrinkled surface | Pahoehoe |
Lava that flows out of fissures on the ocean floor and cools rapidly in rounded shapes | Pillow lava |
Also called tephra, all of the rock fragments ejected from a volcano | Pyroclastic material |
Volcanic deposit of hardened lava with a broad base and gentle slopes | Shield cone |
Lava and tephra built up on the earths surface around a vent | Volacno |