What important geologic event for New York happened in the Early Cretaceous period?
Dome-like uplift of Adirondack region begins
The Paleozoic Era can be subdivided into 7 Periods . Name two of them
Permian, Pennsylvanian, Mississippian, Devonian, Silurian, Ordovician, Cambrian
Explain in your own words, Steno's Law of Superposition for relative dating of rocks
Rock units or layers located towards the bottom are OLDER than units or layer that are towards the top.
The amount of time it takes for half of the radioactive material in a sample to decay into the stable daughter product is known as the ____
Half-life
Who is the richest musician in the world?
Jay-Z
The first life forms with hard shells came about in what PERIOD of Earth's History?
Cambrian
The index fossil, Cryptozoon, belongs to what family/category of organism?
Stromatolites
What is the OLDEST thing here? Explain WHY.
N - it's at the bottom! (Law of Superposition)
As the percentage of the Parent Isotope decreases, the percentage of the Daughter Decay Product
INCREASES
What is the second-largest organ in the human body?
Liver
What PERIOD in Earth's history was the index fossil, Eurypterus, existing?
Silurian
This ERA of Earth's History took place from 252 - 66.0 million years ago
Mesozoic Era
Which is YOUNGER, A or G? Explain how you know!
G has to be younger than A because it is cutting through (intrusion)
What is the approximate half-life of Potassium-40?
1.3 billion years
Where is the Great Barrier Reef located?
Australia
1.3 billion years old
How many million years ago did Pangea begin to break up?
201 mya
What is the YOUNGEST here? WHY
S - top
If there is 50% of Uranium-238 remaining in a rock sample, approximately how old is this rock?
4.5 billion years old
Uncovered by excavators and Egyptologists in 1922, this pharaoh's sarcophagus was discovered in the Valley of Kings.
King Tutankhamun (King Tut)
What is an example of a city in New York that is built upon rocks that formed during the Ordovician period?
(HINT: Take a look at page 8 of the ESRT)
Rochester, Oswego, Watertown, Utica, Albany
Which came first: Fish, dinosaurs, grasses, or mammals?
Fish
Put these events in order from OLDEST to YOUNGEST
C,B,A,D,E
After 3 half-lives of Carbon-14 have gone by, how old is this sample?
17,190 years
There were 4 US presidents that were assassinated while in office. Name 2 of them
Abraham Lincoln, James Garfield, William McKinley, and John F. Kennedy