Unit 3- Geologic Time Scale

What are preserved remains of plants and animals from the remote past called?

In what time period did jellyfish first appear?

Which era represents when humans first appeared on Earth?

Which of the following fossils is the oldest: Ammonite, Trilobite, or Dinosaur?

What are fossils that are abundant, easily recognizable, short-lived, and widespread called?

What is the geological time scale?

What are the four main eons of Earth's history?

What is the significance of index fossils in geology?

What major event marks the beginning of the Paleozoic Era?

What is the difference between relative dating and absolute dating in geology?