The Earth is Moving!
the vibrations in the ground that result from movement along breaks in Earth’s lithosphere
What is Earthquakes
Deep earthquakes occur along ____________ plate boundaries
What is convergent
A ___________ is a vent in Earth’s crust through which molten rock flows.
What is a Volcano
Molten rock below Earth’s surface is called ________
What is Magma
Scientists who study earthquakes are called _______________.
What are seismologists
Most earthquakes occur along active _______________
What are plate boudaries
Shallow earthquakes are common along ___________ boundaries
What is divergent
Volcanoes can form along ___________ plate boundaries, when one plate subducts under another.
What are Convergent
Molten rock that erupts onto Earth’s surface is called ______
What is Lava
The energy released during an earthquake is strongest near the ____________.
What is the Epicenter
Earthquakes of varying depths occur where continents _____________.
what is collide
A break in Earth’s lithosphere where one block of rock moves toward, away from, or past another block.
What is a Fault
Volcanoes that are not associated with plate boundaries are called ___________.
What are hot spots
_____________ are small, steep-sided volcanoes that erupt gas-rich, basaltic lavas.
What are Cinder cones
__________________ are large, steep-sided volcanoes that result from explosive eruptions of andesitic and rhyolitic lava along convergent plate boundaries.
What are Composite volcanoes
Pressure applied to a rock can change the shape of the rock in a process called _______________
What is deformation
A _____________ is a graphical illustration of seismic waves
What is seismogram
__________________are large, gentle-sloped volcanoes that result from quiet eruptions of basaltic lavas along divergent plate boundaries and oceanic hot spots.
What are Shield volcanoes
The ______________ is the area of earthquake and volcanic activity that surrounds the Pacific Ocean.
What is Ring of Fire
The __________________________ measures earthquake intensity based on descriptions of the earthquake’s effects on people and structures.
What is the Modified Mercalli scale
An earthquake’s energy travels in three kinds of seismic waves
_________________, _______________, and _______________.
What are primary, secondary, and surface waves.
The three main kinds of faults are _____________, _______________, and _________________.
What are strike-slip faults, reverse faults, and normal faults
A _____________ is a fast-moving avalanche of hot gas, ash, and volcanic rock.
What is pyroclastic flow
____________ is a fluid’s resistance to flow. ___________ of lava is higher when the magma has a high silica content.
*both blanks are the same word*
What is Viscosity
____________, made up of tiny particles of pulverized volcanic rock and glass, erupts explosively
What is Volcanic ash