This is the layer of the Earth that is the smallest in thickness.
crust
100
The name given to the continents when they were believed to once all be joined together two hundred million years ago.
Pangaea
100
A scientist who studies Earthquakes is called this.
Seismologist
100
Volcanoes are always predictable. (true or false)
false
100
These two occurences help to create mountains. Hint: they both start with the same letter.
faulting and folding
200
Below the Earth's crust is this layer.
mantle
200
Plates pushing together are referred to as this type of plate.
converging
200
Aftershocks are actually these.
smaller earthquakes
200
This volcano covered the whole city in ash and froze the corpses in their dying positions.
Mt. Vesuvius
200
Th upper or top part of folded rock is referred to as this.
anticline
300
The outer core is found in this state of matter.
liquid
300
This German man devised the continental drift theory.
Alfred Wegener
300
The measurement scale used to measure the magnitude of earthquakes is called this.
Richter Scale
300
Volcanoes found around the Pacific Ocean are a part of this.
Ring of Fire
300
The bottom part of folded rock is called this.
syncline
400
The matter inside this part of the Earth is so compressed it is a solid at very high temperatures.
inner core
400
Diverging plates happen when the Earth's plates do this.
move apart
400
These waves cause the most damage.
Surface or L waves
400
When volcanoes are not active, we refer to them as being in this state.
dormant
400
Mountains that are jagged at the top would be considered to be in this age category.
young
500
The earth has this many layers.
4.
500
Scientists believe this is one of the main causes for plate movement (think back to Mrs. Kaminski talking about particles in the air rising and falling with temperature).
convection currents
500
The the fastest earthquake waves are called this and can push through solids, liquids and gases.
primary or p waves
500
This volcano erupted in Washington State in the late 1900's.
Mt. Saint Helen's
500
This mountain range is considered to be the youngest in the world.