Era and Period
The place where the first animals lived
What is ocean?
The age of a rock compared with ages of other rocks
What is Relative Age dating?
The massive supercontinent
What is Pangea?
The actual age of a rock
What is absolute age?
The longest lasting Era in Earth's history
What is Precambrian?
The principle stating the youngest rock layer is at the top, and the oldest is at the bottom
What is superposition?
Knowing of the exact age of a fossil
What is Radioactive Dating?
A rock layer is missing between rock records
What is uncomformity?
About how old the Earth is
What is 4.6 Billion years