Dating
Comparing the age of 2 things in terms of first/last.
What is relative dating?
Smallest division of geologic time.
What is an epoch?
Theory that sometimes the earth changes in sudden, dramatic ways:
What is catastrophism?
Most divisions of geologic time are based on
What are mass extinctions?
The age of something in years.
What is absolute dating?
Current era.
What is the Cenozoic?
The idea that most of earth's changes are gradual and steady:
During the Mesozoic Era, the climate was:
Atoms of the same element with different numbers of neutrons.
What are isotopes?
Word that means 'in an ordered sequence':
What is 'chronologic' or 'chronological'?
A volcanic eruption, meteor impact, or earthquake would be an example of:
What is catastrophism?
Cooled lava forms a rock called:
What is basalt?
The amount of time it takes for half of a radioactive sample to become stable.
What is a half-life?
Pangaea formed in this Era:
What is the Paleozoic?
Erosion, deposition, and weathering are examples of:
What is uniformitarianism?
Number of major divisions of Earth's history:
What is FOUR?
Radioactive isotopes are known as _____ isotopes, while the newer, stable isotopes are known as ____ isotopes.
What are parent and daughter?
Earliest part of earth's history, not an era.
What is precambrian time?
Father of modern geology, known for uniformitarianism.
Who was James Hutton?
These two land masses combined to form Pangaea:
What are Laurasia and Gondwana?