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BackHow old is the Earth?Ques. #14.6 billion yearsAns.

What is the duration of the Silurian period? BackQues. #2Ans.28 million years

During which period did the eurypterids become extinct?BackQues. #3Ans.Permian

How old are the oldest known rocks?BackQues. #4Ans.About 4.2 billion years

Why didnt dinosaurs eat the earliest grasses? BackQues. #5Ans.Grasses didnt evolve until afterthe dinosaurs were extinct.

During which period of Earth history did North America collidewith Avalon? BackQues. #6DevonianAns.

Name 2 characteristics of a goodindex fossil. BackQues. #7Ans.Short lived and Widespread

Lichenaria, Cystiphyllum, andPleurodictyum are all........... BackQues. #8Ans.Corals

When did the Palisade sill intrude?BackQues. #9Ans.About 200 million years ago

When did extensive coal-formingforests exist on Earth? Ques. #10BackAns.During the Pennsylvanian division of the Carboniferousperiod or between 299 and 318 million years ago

Near which NYS city (pick one) might there be fossils of the first coral reefs? BackQues. #11Ans.Oswego, Watertown, Utica, Massena, Plattsburgh,or Albany

What was the duration of thePhanerozoic eon? BackQues. #12Ans.542 million years

Why are there no fossils of the earliest grasses in NYS?BackQues. #13Ans.Earliest grasses appeared during the Paleogeneperiod and there are no Paleogene rocks in NYS

During which period did the advance andretreat of the last continental ice sheet occur? BackQues. #14Ans.The Quaternary

About how many years were thetrilobites on Earth?BackQues. #15Ans.About 290 million years

When did the earliest stromatolites evolve? BackQues. #16Ans.About 3.3 billion years ago

BackQues. #17Ans.11,400 yearsHow many years isrepresented by time B?

Which is the oldest layer? BackQues. #18Ans.Grey limestone

What is thehalf-life of this element?BackQues. #19Ans.200 years

BackQues. #20Ans.Element BWhich elementis uranium 238?

BackQues. #21Ans.D, C, B, E, fault, erosion of B & E, APut all the eventsin order from oldestto youngest.

The stable decayproduct shown inthe graph is probablyBackQues. #22Ans.Nitrogen 14

Which elementhas the longesthalf life? BackQues. #23Ans.Element D

During which geologic era didPangaea begin to break up? BackQues. #24Ans. Mesozoic

Which columncontains theyoungest rock?BackQues. #25Ans.Column III

BackQues. #26Ans.359 million years ago?When did this become extinct?

Which city in New York State is on the oldest bedrock? Old Forge, Syracuse, or Kingston? BackQues. #27Ans.Old Forge, NY

Near which NYS city might it be possible to find mammoth bones in the sediments? BackQues. #28Ans.Riverhead or New York City

What is the age (time period) of the bedrock that makes up the Allegheny Plateau?BackQues. #29Ans.Devonian

If a fossil contains 12.5% of its original C14, how many half lives have passed? BackQues. #30Ans.Three

YOURE A WINNER!The Neogene and the Ordovician are periods of Earth history

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