This famous canyon is in Arizona witch is 6 Million years old.
how old is the grand canyon?
100
When animals, plants and other organisms die, they typically decay completely. But sometimes, when the conditions are just right, they're preserved as fossils.
how are fossils formed?
100
this rock contains fossils
what rock can contain fossils
100
A v-shaped valley eroded by a river
What is a canyon?
200
it was a fire world and lava world.
what was earth before it was created?
200
north canyon is 2925 feet and nankoweap is 2800 feet
is north canyon a higher level than nankoweap?
200
these index fossils lived 521 million years ago.
when was the first trilobites that was found?
200
This type of rock forms when molten rocks cools and then hardens.
what is Igneous?
200
A nearly level area that's has been uplifted
What is a plateau?
300
A thin rigid surrounds earth
What is the crust
300
The grand canyon is older
What came first grand canyon OR nankoweap?
300
The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
What is a fossil?
300
sedimentary, metamorphic, and igneous
What are the types of rocks?
300
A curve or loop in a river.
What is a meander?
400
is less dense near the crust more dense near the core
What is the mantle
400
A deep gorge, typically one with a river flowing through it.
What are canyons?
400
A hard stony substance secreted by certain marine coelenterates as an external skeleton, typically forming large reefs in warm seas.
What are corals?
400
because it is the right Temperature under ground and it has lots of space and it uses a lot of time. #
why is there crystals under the ground
400
nearly level area that has been eroded or where material has been deposited
What is a plain?
500
crust, outer core, mantle, inner core.
what are the earth layers?
500
John Wesley Powell.
Who explore the grand canyon?
500
Its late Pennsylvanian and early Permian.
What is pecopteris?
500
igneous
What is a rock called when its hardens
500
The land that gets covered by water from a stream or river during a flood