VOLCANO
melted rock under ground
What is magma?
sleeping volcano
What is dormant?
Place where an earthquake begins inside the earth
What is a focus?
an instrument to measure earthquakes
What is a seismograph?
Magma in a large area underground
magma chamber
Dead volcano
What is extinct?
Small tumors that occur after a large earthquake
What is an after-shock?
Primary waves from an earthquake
What are P waves?
volcanoes around the Pacific Ocean-about 80% of world's volcanoes
What is the Ring of Fire?
volcanoes in the middle of a tectonic plate
What is a hotspot?
Movement on the surface of the earth because of underground movements.
What is an earth quake
Shockwaves that travel through rock
What are seismic waves?
Hole where magma comes out
What is a vent?
Melted rock above ground
What is lava?
the place above the focus of the earthquake
What is an epicenter?
measurement of an earthquake
What is magnitude?
Bowl-shaped volcano top
What is a crater
A crack in the crust
What is a fault?