row 1
The fastest type of earthquake waves are S waves.
About 80% of the world's earthquakes occur in the __?
Indian ocean
Circum pacific belt
Alpide belt
Middle eastern belt
circum-pacific belt
Eighty-Five percent of all earthquakes are ___ earthquakes?
intermediate - focus
Deep-focus
No-focus
Shallow-focus
shallow- focus
What is the bottom of the mantle called?
core-mantle boundary
the study of the earth is __________?
geology
The earthquake zone stretching from southern europe to Indonesia is the __?
Alpide belt
Circum-pacific belt
Middle eastern belt
Indian ocean belt
alpide belt
What is the area between the upper mantle and the lower mantle?
Litho
Moho
Transition zone
Gutenburg discontinuity
transition zone
Smaller earthquakes that often follow a large earthquake at frequent intervals are called.
aftershocks
What is the boundary line between the crust and the mantle?
moho
Large, irregularly shaped lump made of lava that hardens before being thrown out of the volcano.
volcanic block
The study of earthquakes is called _____________?
seismology
What is the fracture zone between stationary and moving rocks called?
fault
Formed partly by explosive eruptions of ash and rock fragments and partly by mild lava flows.
composite volcano
Consists primarily of erupted volcanic ash and rock fragments help loosely together
cinder-cone volcano
Volcano that probably will not erupt again.
extinct
What is the idea that rocks on either side of a fault spring to position of little or no stress after the earthquake?
elastic rebound
Hardened lava with a surface that is either smooth or ropy.
Pahoehoe
The underground Lava Tunnel is the actual source of volcanic eruption
magma chamber
What type of fold occurs when rocks buckle up to form an arch-like structure?
Anticline
Procline
Syncline
Concline
Anticline
The type of mountain that forms when molten rock erupts from a hole inside the earth's crusts is a(n) __________ mountain?
volcanic
Solid particles less than 2mm in diameter.
volcanic ash
A volcanologist is placing instruments near a volcano to help predict when the volcano will erupt. Which of the following instruments is he most likely to choose?
A seismometer; to detect earthquakes caused by underground pressure
Camera; to detect molten rock and volcanic ash released by the volcano
Light meter; to detect the sun being blocked by volcanic ash
Thermometer; to detect steam and hot gasses released by the volcano
A seismometer; to detect earthquakes caused by underground pressure
An instrument used to record the vibrations caused by an earthquake is a(n) ___________?
seismograph
Lava in water solidifies almost instantly, forming rounded structures
pillow lava
How does the existence of the RIng of Fire provide evidence for plate tectonics?
Most volcanoes occur where molten rock reaches the surface
Moar volcanoes produce lava when they erupt
Most volcanoes appear to be located along subduction zones
Most volcanoes occur in the same regions of the world
Most volcanoes appear to be located along subduction zones