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time periods
plate tectonics
relitive dating
mass extinctions
volcanos
100
This period ended about 66 million years ago
What is the cretaceous period
100
what are the 3 types of waves
What is s wave p waves and l waves
100
layers of dirt
What is relative dating
100
astroids comets supernovas
What is extra terrestrial causes
100
3 types of volcanos
What is the shield composite and cilender cone volcanos
200
this was the reptile that lived closest to the humans
What is the t rex
200
the plate motion that causes earth quakes
What is what is transforming boudry
200
2 bones in layers in dirt
What is older bone and younger bone
200
terrestrial causes
What is low ocean levels oxidation levels low and continents moving
200
made from mostly cinders
What is a cilender cone volcano
300
this is the time period that we live in
What is the quaternary period
300
plates that make mountains
What is what are convergent boundrys
300
layers of dirt that are off
What is a falt
300
thing that killed the dinosaurs
What is an astrid
300
built from lave and alternating layers
What is a composite volcano
400
when did life show up on earth
What is 540 million years ago
400
crack in dirt
What is a falt
400
layers going in to other layers of dirt
What is a intrusion
400
rock materals
What is half life
400
where lava comes out
What is the vent
500
the era of the dinosaurs
What is mezoic era
500
the waves that cause the most damage
What is l waves
500
layer on top of older layers
What is what is older to younger layers
500
produced by crater walls to make a larger crater
What is the cladrera