Layers of the Earth
Pressure and temperature do this as you move toward the center of the Earth.
What is increase?
A break or fracture in the earth's crust is called this.
What is a fault?
Most earthquakes happen at convergent, transform and divergent_______
What are boundaries?
This type of Volcano forms tall, cone-shaped mountains with alternating layers of lava and ash.
What is a composite volcano?
Earthquakes and volcanoes happen where these meet.
What are tectonic plates.
This layer is the most dense.
What is the inner core.
This type of boundary includes subduction.
In a seismic event, the greatest amount of shaking occurs here.
What is the epicenter.
This type of volcano has gentle, sloping sides.
What is a shield volcano.
These are openings in the earth's surface.
What are volcanoes.
These two layers of the Earth are solid.
What are the inner core and the crust.
Wegner's hypothesis of Continental Drift explained this puzzle-like movement.
What is the continents fit together.
A higher magnitude earthquake releases this level of energy and a lower magnitude earthquake releases this level of energy.
What is higher level and lower level energy.
This type of volcano is the largest.
What is a shield volcano.
The lithosphere is broken up into these large sections.
What are plates.
This layer is where molten material comes from.
What is the mantle.
The most famous of these boundaries is the San Andreas Fault, where grinding of the plates and earthquakes are common.
What is a transform boundary.
Geologists know that when plate movement stores energy these are likely to happen.
What are earthquakes.
This location is where most volcanoes occur.
What are along plate boundaries.
Over 75% of the Earth's volcanoes are found here.
What is the Ring of Fire.
The crust is made up of these two stacked parts.
Most earthquakes and volcanoes happen in the Ring of Fire in the Pacific Ocean for this reason.
What are lithospheric plate boundary location.
This instrument is used by scientists to measure earthquakes.
This caused the "sleeping giant," Mount St. Helens, to explode.
What is the release of high pressure over the magma chamber.
This is the thickest layer of the earth.
What is the mantle.