Show:
All about earthquake
Earthquakeswaves
Earthquakes / Volcanoes
Effects of Earthquakes
Volcanic Eruptions and Effects
100
A fracture surface along which rocks can slip
What is a fault
100
a P wave
What is the fastest traveling seismic wave
100
fires caused by ruptured gas or electrical lines
What is the most common harzard of earthquakes?
100
at least three seismograph recordings
What are the number of recordings needed to locate the epicenter of an earthquake?
100
because they are located near a hot spot
Why are there three volcanoes on the Hawaiian Islands
200
The direct cause of earthquakes
What is elastic strain
200
Secondary waves
What is a type of seismic wave that can travel through solids but not liquids?
200
A seismic sea wave
What is a tsunami
200
The Moment Magnitude Scale
What is the amount of energy released during an earthquake based on?
200
shield volcanoes
What are volcanoes built out of layers of gently flowing basaltic lava?
300
Most earthquakes occur along or near this feature of Earth
What are plate boundaries
300
an S-wave
What is a type of seismic wave that canNOT travel through liquids?
300
lava
What is magma that rises to the earth's surface?
300
Because it is less dense and more buoyant than the surrounding rock
Why does magma rise toward the earth's surface?
300
a rapidly moving misxure of hot gases and solids
What is pyroclastic flow?
400
The second step in the events of how an earthquake occurs
What are rocks stretching and bending
400
A surface wave
What is the type of wave that causes the most damage?
400
Plate boundaries
What is the place most likely for volcanoes to form?
400
liquefaction
What is the conversion of a solid into a liquid?
400
its ability to bury human and wildlife habitats
What is the greatest danger of lahar?
500
What step happens right before an earthquake occurs?
The rocks snap and release energy.
500
a seismograph
What is an instrument used to record seismic waves and to meaure the magnitude of an earthquake?
500
Where do volcanic mountains most often form?
The location where two oceanic plates converge
500
about 30 times more energy
How much more energy is released during a 3.0 earthquake when compared to a 2.0 earthquake
500
cinder cone volcanoes
What is a steep-sided volcano composed of basaltic lava and develops from layers of tephra?