Geologic Time
Boundaries
Major Events
Random
100
What is the age of the earth?
4.6 Billion Years
100
How many major plates is the earth divided into?
12
100
The end of what period was marked by the mass extinction?
Creataceous
100
What are the plates made of?
Lithosphere
200
How do we determine a change in time periods?
Changes in the fossil record
200
When plates collide what do they form?
The features of the Earth
200
When did Mt St Helen's erupt?
1980
200
What forms in subduction zones?
Volcanoes
300
What time Period are we currently living in?
Quaternary
300
What are plates made of?
Lithosphere
300
What caused the great extinction?
Astroid
300
What type of plate does Iceland lie on?
Divergent
400
How long is a geologic time period?
Does not have an exact length
400
What lies below the lithosphere?
Asthenosphere
400
What is the first geologic period?
Cambrian
400
What is the deepest part of the ocean?
Miriana Trench
500
Name the divisions of time from largest to smallest
Eon, Era, Period, Epoch
500
Name the three types of plates and demonstrate their movements
Divergent, Convergent, Transform
500
Dinosaurs lived during which periods?
Triassic and Jurassic
500
Where is the "Ring of Fire" located?
Around the Pacific Plate
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