EARTHQUAKES
VOLCANOES
PLATE TECTONICS
MIXED
VOCABULARY
100
What happens when two plates rub together?
What is earthquake?
100
This is molten rock above ground.
What is lava?
100
Earthquakes and Volcanoes are usually located in relation to these.
What is a plate boundary?
100
This is what forms when magma hardens in a volcanic pipe.
What is a volcanic neck?
100
The thinnest layer of the Earth
What is the Crust?
200
The name for when all the continents were stuck together.
What is Pangea
200
This is molten rock below ground?
What is magma?
200
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?
200
Hot air or liquid is less ________________ than cool air or liquid.
What is dense?
200
What is the term for how the continents moved apart?
What is continental drift?
300
What is the term for how the continents moved apart?
What is continental drift?
300
This material changes the thickness of lava.
What is silica?
300
Name four of the major plates.
What is any of the following North American plate, South American plate, Eurasian Plate, Indo Australia plate, African plate, Antarctica plate?
300
the place in the South Pacific where a lot of earthquakes/ volcanic activity/ tsunamis happen.
What is the Ring of Fire?
300
This is a mass of rock that forms when a large body of magma cools inside the cust.
What is batholith?
400
This is a scale used to measure earthquakes.
What is Richter or Mercalli?
400
This is the narrow tube that rises from the magma chamber to the vent.
What is the pipe?
400
This is the mechanism (what causes) the plates to move.
What is convection cycles in the mantle?
400
This is one benefit of volcanoes for life.
What is fertile soil?
400
States that youngest rocks of ocean floor are at divergent boundaries, moving outward.
What is seafloor spreading?
500
The instrument used to measure earthquakes.
What is a seismograph?
500
This is a crack that lava flows out which is not the main vent.
What is the side vent?
500
The two types of convergent boundaries.
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)?
500
This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
What is Harry Hess?
500
Although the hottest layer of the Earth, this layer is solid metal.
What is the inner core?
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