Vocab
the age of a rock compared to the ages of other rocks
relative age
What is radiometric dating?
The method geologists use to find the absolute ages of rocks
What event usually marks the end of a geologic era?
A mass extinctionWhat event usually marks the end of a geologic era?
Which event happened closest to the formation of Earth?
The formation of the Moon
What sports do I do?
track and volleyball
a gap in the geologic record that shows where Rock layers have been lost due to erosion
unconformity
What is relative age and numerical age
When geologists describe the ages of rocks
What do we call the remains or traces of ancient organisms found trapped in rock?
fossils
Why is the Mesozoic Era commonly referred to as the "Age of Reptiles"?
Dinosaurs evolved, dominated, and diversified during this time.
Who is my favorite sibling?
Tuckerrr!
The process in which the nuclei of radioactive elements break down releasing stress moving particles and energy
Radioactive decay
What is applying stratigraphy principles to analyze the spatial relationships between rock layers and structures
Geologists determine the relative ages of rocks
Which era is famous for being the "Age of Dinosaurs"?
A mass extinction
Approximately what percentage of Earth's history is taken up by the Precambrian time?
88%
When was I born?
December 14, 2012
The process of determining the age of an object using the half-life or one or more radioactive isotopes
Radioactive dating
What is relative is comparing rocks to other rocks, and absolute is the number of years passed since the rock formed?
The difference between relative and absolute age.
Does the Law of Superposition state that the oldest rock layer is usually found at the top or the bottom?
the bottom
If you found a fossil from the Cenozoic Era, what type of organism would it most likely be?
An early mammal or modern bird
What events do I do in track?
100m, 200m, 4x100m, and long jump
The age of a rock given as a number of years since the rock formed
absolute age
What is stratigraphic correlation
A geologist matches the rock layers in one area to rock layers found in another area
During which long block of time did Earth's very first simple, single-celled life forms appear?
Precambrian time
What gas did cyanobacteria release that fundamentally changed Earth's early atmosphere?
Oxygen
What year was volleyball invented?
1895