Volcanoes
Molten earth material found underground
Magma
Molten earth material found above ground
Lava
A point or location on Earth's surface where an earthquake occurred
Epicenter
The number describing the strength of an earthquake
Magnitude
How does a mudslide usually occur? Slowly or rapidly?
Rapidly, without much warning
A flash flood that originates from glaciers on a volcano
Lahar
A volcano erupts in order to do what?
Release pressure from the Earth's interior
A crack on the Earth’s surface caused by tectonic plate movement
Fault
What are earthquakes caused by?
Plate Movement
Which ocean is the Ring of Fire located?
Pacific Ocean
An opening that allows gas, hot magma, and ash to escape from beneath the Earth's crust is called a ....
Volcano
What are earthquakes caused by?
Plate Movement
How and why do earthquakes happen?
Tectonic plates are moving past each other and get stuck, building up pressure until they slip and an immense amount of energy is released
What is the name of the scientific device we use to measure earthquake strength?
Seismometer (or seismograph)
An event that occurs when loose or cracked rocks on steep slopes are dislodged is called what?
A rockfall
What is used to measure the strength of an earthquake?
Richter Scale
At a convergent plate boundary of two continental plates, how will the plates "behave," or move?
They will smash together and create mountains, with no volcanic activity
What do we call a sudden and violent shaking of the ground?
An earthquake
Where are seismic waves the strongest?
At the center of the earthquake
This develops when water rapidly accumulates in the ground and results in a surge of water-saturated rock, earth, and debris.
A mudslide
What is lava?
Magma that comes out of a volcano
Where do volcanoes form?
At a point where tectonic plaes meet
Shock waves caused by an earthquake are called what?
Seismic Waves
What part of the earth can we find tectonic plates?
The crust
An overflow of water onto land that is normally dry is called what?
A flood