Define 101
study of the earth
What is geology
study of earthquakes
What is seismology
sudden movement of rock masses along a fault
What is faulting
a weak earthquake
What is a tremor
any substance emitted by an active volcano
What is ejecta
a portion of the mantle between 400km & 1050km beneath the surface, where upper & lower mantle merges
What is the transition zone
smaller earthquake or tremor that follows a larger earthquake
What is a aftershock
mountain that forms when molten rock erupts from a hole in the earth's crust
What is volcanic mountain
huge bowl-shaped crater produced by a volcano
What is a caldera
lava that hardens into rough, jagged rocks with a crumbly texture
What is aa
a portion of the earth that marks the bottom of the mantle
What is the core-mantle boundary
earthquake that results from sudden movements of rocks beneath the earth's surface
What is a tectonic earthquake
mountain that appears to have formed when molten rock is forced beneath an overlying rock layer
What is a domed mountain
the underground point at which an earthquake begins
What is hypocenter
opening in the earth's surface through which hot gases, ash, and molten rock are ejected form the earth's interior
What are volcanoes
the region consisting of the earth's crust & upper mantle formed by the tectonic plates
What is the lithosphere
computer system that stores and processes geographic data
What is a geographic information system
lava that is emitted underwater and solidifies almost instantly to form rounded structures resembling pillows
What is pillow lava
earthquake zone that stretches from the mountains of northern Africa, through parts of southern Europe into Asia to Indonesia.
What is Alpide belt
study of volcanoes and volcano related phenomena
What is volcanology
the plastic rock in the lower part of the upper mantle
What is the asthenosphere
mountain thought to have formed when rocks on one side of a fault were forced upward while rocks on the other side sank
What is fault-block mountain
horizontal feature that forms when the surface of a large lava flow hardens but the lava beneath remains molten and continues to flow
What is lava tunnel
lava that hardens into to form either a smooth or ropy surface
What is pahoehoe
mountain thought to have formed when edges of two adjacent tectonic plates were pushed together, causing the layers to fold
What is folded mountain