A fountain of water and steam that builds up pressure underground and erupts at regular intervals.
What is a geyser
There are ______________ main layers of the Earth.
What is four
A weak spot in the crust where magma has come to the surface
What is a volcano
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
The shaking and trembling that results from the movement of rock beneath Earth's surface
What is an earthquake
A force that acts on rock to change its shape or volume
What is stress
The thickest layer of the Earth
What is the mantle.
In volcanic areas, groundwater heated by magma is a source of
What is Geothermal Energy
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
An earthquake that occurs hours, days or even months after a large earthquake
What is an aftershock?
A type of fault where the hanging wall slides downward; caused by tension in the crust
What is a normal fault
Plates float on top of the _______________________.
What is the asthenosphere
A major volcanic belt formed around the rim of the Pacific ocean
What is the Ring of Fire
Name and tell where there is an active Transform boundary in North America?
What is the San Andres Fault, California
A Coast Guard warns of a giant wave approaching shore as a result of an earthquake.
What is a tsunami?
rocks on either side of the fault slip past each other sideways with little up or down motion
What is a strike-slip fault
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)
What is the lithosphere
This type of volcano erupts quietly _____________and created most of the islands that make up which United State______________
What is shield volcano
What is Hawaii
This is what causes the plates to move
What is convection cycles in the mantle
What can happen to a building if liquefaction occurs during an earthquake?
What is sink and pull apart
A boundary that pulls apart is called a ____________boundary. It's under a stress that thins the middle called ________________ and this stress can causes a break known as a ____________fault
What is divergent boundary?
tension
normal
The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.
What is thinnest under the ocean and thickest under the continents.
What are the two ways that a volcano can form?
What is a hot spot
What is on a plate boundary
What are the two types of convergent boundaries? What occurs at each?
Convergent ocean and convergent continental where subduction occurs and volcanoes form.
Convergent continental and Convergent continental where collision occurs and mountains form.
A Seismologist studies earthquakes. He uses a ____________________machine to gather evidence about the strength of a ________________
What is seismograph?
What is seismic wave?