Environmental Disasters A visual journey. Donora, PA Smog Disaster 1948.
Geologic Time Earth and Space Science. Major Questions? How old is the Earth? How did it form? Was it created? Did it evolve? What processes were involved?
Age of Dinosaurs Lab 1: Geological Methods
Ch. 6.1 Fossils & Geologic Time
THE QUETTA EARTHQUAKE A M IGHTV DIVI N E SIGN Being an English Version of a Pan~phlet on the Subject
Stanford University DNA Extraction in Atacama Soils Lauren Fletcher – NASA Ames Research Center/Stanford University Christopher McKay – NASA Ames Research.
Early Paleozoic Events CHAPTER 8. In the Beginning (of the Paleozoic…) Phanerozoic = "visible life". Refers to rocks younger than the Precambrian. 540.
Time- a limited period or interval, as between two successive events. Seconds Minutes Hours Days Years.
HOW OLD IS OLD? The Rock Record and Geologic Time Chapter 3.
Warm Up 1/10/08 1. 1. Fossils are the ____. a. oldest layers of rock in a region b. objects that people of long ago left behind as artifacts c. living.
Chapter 21 Section 1 The Rock Record Review Vocabulary fossil: the remains, trace, or imprint of a once- living plant or animal Scientists organize geologic.
- A scale that subdivides the 4.5- billion-year history of Earth into many different units and provides a meaningful time frame within which the events.