EarthQuakes
Volcanoes
Plate Tectonics and Plate Boundaries
Continental Drifts
100
When plates move or slide against each other and they shake the earth and we can feel it
What is an earthquake?
100
A mountain/hill that has a crater at the top. Magma comes from under the ground, and spits lava out the top.
What is a volcano?
100
Divergent
What is the boundary called when the plates move away from each other?
100
A continental drift means that once, all of earths continents were joined together
What is a continental drift?
200
The ground starts shaking, and building can fall, and debris
What happens during an earthquake?
200
Very hot liquid mixed with rocks and minerals that come from under the ground
What is magma?
200
Transform boundary
What is the boundary called that move horizontally past one another called?
200
Pangaea is the when all continents were connected and called a super-continent
What is Pangaea?
300
The Richter Scale
How is an earthquakes magnitude measured?
300
Mt. Vesuvius
What is the most known Volcano?
300
Convergent Boundaries
What is the boundary that the plates come together?
300
Alfred Wegner
Who discovered that all continents were once joined together?
400
Aftershock
What is the shaking after the earthquake itself called?
400
Eruptions can last up to 20 years, but is very unlikely
How long can an eruption last?
400
A dozen or more
About how many major plates are there?
400
Fossils
What is one way he discovered that all continents were connected?
500
Usually only seconds, but can last about a minute
How long do earthquakes last?
500
Probably millions that have BEEN active. Only about 1500 active during human lifespan
How many volcanoes are in the world?
500
Plates
What is the crust and upper mantle that are broken up into enormous slabs called?
500
"All the earth"
What does "Pangaea" mean in Greek?
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