Geologic Time
Fossils
Topographic Maps
Plate Tectonics
Sea Floor Spreading
100
Era that began with formation of Earth
What is Precambrian?
100
remains of organism fromthe past
What is a fossil?
100
the lines on a topographic map
What is a contour line?
100
named giant land mass Pangaea
Who is Alfred Wegener?
100
deep canyons on ocean floor
What is a trench?
200
Era with three periods , best known for the dinosaurs
What is the Mesozoic Era?
200
type of fossil when minerals replace remains and become rock
What is petrified?
200
tells the directions on a map
What is a compass rose?
200
number of large tectonic plates?
What is 7?
200
areas where oceanic crust is forced back down into trenches
What is a subduction zone?
300
The modern era that we live in
What is Cenozoic?
300
When the shell remains and the contents dissolve
What is a mold?
300
show that there is a steep cliff
What is lines very close together?
300
what the plates "float" on
What is mantle (athensophere)?
300
place where new crust is forming
What is the Mid-Atlantic ridge
400
Era where first organisms appear
What is Paleozoic?
400
when the mold becomes filled with minerals that are not part of the original organism.
What is a cast?
400
the "v" lines on a river?
What is point to the source of the water?
400
name of large fault in Californis
What is San Andreas?
400
area where there are a large number of volcanoes and earthquakes
What is the Ring of Fire?
500
the age of the earth
What is 4.6 billion years
500
used to determine actual age of fossils
What is radioactive dating?
500
hatch marks on a circle
What is a volcano or depression?
500
scientists who study volcanoes or Dr. Spock
What is a vulvanologist?
500
where the Ring of Fire is located
What is the pacific ocean?
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