Timeline
The age of the Earth
What is 4.5 billion years?
The remains of an ancient organism
What are fossils?
Layers on top are ______ than the layers on the bottom
Younger
When a species changes over time
What is Evolution?
Branch of science that studies life
What is biology?
The time since the dinosaurs went extinct
What is 65 million years?
The most common types of fossils
What are Molds/casts?
The law of superpostion
Layers on top are younger than the layers below
The mechanism behind evolution (the genetic cause)
Branch of science that studies how chemicals react
What is Chemistry?
The era we live in
What is the Cenozoic?
Fossils that may include some part of the original organism (ex. frozen Mammoth)
What are petrified or preserved remains?
An intrusion is always.....
Younger than the layers around it
One of the first types of land animals
Amphibians
The branch of science that studies matter and energy
What is physics?
The name of an event in Geologic history in which complex organisms like animals suddenly evolved
What is the Cambrian Explosion?
Part of an organism that is more likely to become a fossil
Hard parts
The principle of uniformatarianism
The same geologic processes that occur today have been happening throughout Earth's history
This modern type of animal may be a descendant of the dinosaurs
What are birds?
The galaxy we live in
What is the Milky Way?
All 4 major eras in Earths history, including a description of the major types of life forms in each...
What is the Cenozoic (mammals), Mesozoic (Dinosaurs), Paleozoic (Fish, marine life) and Pre-Cambrian (bacteria)?
Describe how something can become a fossil
Answers may vary
Accurately describe radiometric dating
Answers may vary
The first type of human evolved about this long ago....
8 million years ago
When a giant star explodes (and in the process creates new elements!)
What is a supernova?