Earthquakes 1
Earthquakes can cause these monstrous waves
What is tsunamis
This is the strength of an earthquake
What is a magnitude
Scientists who study the structure of the earth
Who are geologist
A volcano that has been active at some time in recorded history, but hasn't had a recent eruption
What is dormant
Magma that has reached the earth's surface
What is lava
A break that appears at the boundary between two moving masses of rock is this line
What is a fault line
When natural acids slowly eat into a rock, breaking apart
What is Chemical weathering
The process by which new soil is formed as rocks crumble & break into smaller pieces
What is weathering
A volcano that produces lava fountains or fire curtains
What is Hawaiian
Runs along the edge of the Pacific Ocean, is named for its many volcanoes
What is Ring of Fire
This point underground is where a earthquake begins
What is a focus
This increases with the depth of the rock
What is temperature
Moho or Mohorovicic discontinuity
What is the boundary between the earth's crust & its mantle
A volcano characterized by hot clouds of gas & dust that it expels
What is Plinian
A depression found at the top of a volcano
What is a crater
The place at ground level that is directly above the focus of an earthquake is known as
What is an epicenter
This is created when trapped gasses blast through the earth's surface
What is a vent
This is the study of earthquakes
What is seismology
A volcano that has erupted recently
What is active
Holes or cracks which serve as escape vents for underground gases
What are fumaroles
Any trembling or shaking of the earth's crust is defined as a
What is a earthquake
This allows molten rock and hot gasses to escape from within the earth
What is a volcano
This is mid-oceanic ridges
What is the underwater mountain ridges
A vocano that has not erupted in recorded history
What us extinct
Smaller fragments of molten rock that solidify almost instantly
What are tephra