Show:
facts
facts
facts
facts
facts
100
single land mass
What is pangea
100
Himalayan Mountains were formed by
What is convergent boundary- two plates colliding together
100
Hottest layer of the earth's layers
What is inner core
100
This ranks the magnitude of an earthquake
What is Richter Scale
100
This is an instrument that measures the magnitude of an earthquake
What is a seismograph
200
radioactive material that most stored because it is dangerous if ingested or breathed in
What is nuclear waste
200
the crust and upper mantle make up this
What is lithosphere
200
Originator of the continental drift theory
Who is Alfred Wegner
200
Occurs at a convergent boundary, when one plate slides under another plate. The effect is usually volcanoes.
What is subduction
200
A volcano that has erupted in recorded history, or has the capabilities to erupt
What is active
300
distance from the earth's surface to the center of the earth
What is 6000 km
300
this theory is based upon the movement of the continents
What is continental drift
300
What period did the dinosaurs become extinct
What is Mesozoic
300
magma that reaches the earth's surface
What is lava
300
A "sleeping" volcano. Hasn't erupted in over ten thousand years but scientists feel it could someday
What is dormant
400
earth is about __________years old
What is 4 billion
400
possible effects that can occur and divergent and convergent boundaries
What are earthquakes, volcanoes, mountain formations
400
area around the Pacific Ocean where you will find the most active volcanoes
What is Ring of Fire
400
a volcano that is considered "dead"
What is extinct
500
a possible effect that can occur at a transform boundary
What is an earthquake
500
theory about the movement of lithospheric plates
What is plate tectonics
500
Layer under the crust
What is mantle
500
What period was there evidence of first plants and reptiles
What is Paleozoic
500
Earth formed during this period
What is precambrian