Earth Science Unit 4 Day 1

Learning Objective: Students will learn about geological history by creating a timeline and will analyze and interpret the timeline in writing using science ideas: stability and change, scale, system models, patterns.

Questions:

1. How old is Earth and how do we know? (book)
2. How is Earth's history organized? (book)
3. Which is the smallest division of time on the geologic time scale?

Answer Choices for number 3:

	A. Eon B. Period C. Epoch D. Era