Slide 1Evolution- Change in life forms over time Why do things change? How do they change? Slide 2 Estimated age of earth-4.6 Billion years 4 geologic eras 1.Precambrian…

Slide 1Relative Time Slide 2 Relative Dating Relative dating – events are placed in a sequence, but actual occurance dates are unknown. Who is older, Mr. Kopp or Justin…

Slide 1Absolute Dating Slide 2 J F M A M J J A S O N D J Earth Forms Earth Cools First Life Abundant Oxygen Multicellular Organisms Plants and Animals Dinos 15-25 Humans…

Slide 1... or how to make sense out of Ch. 8 of the text... Prehistoric Cultures Tim Roufs section ©2009 Class Slides Set 10A Special Skills Used to Study Early Humans Slide…

Slide 1Whos First? Copyright © Houghton Mifflin Harcourt Publishing Company What is relative dating? Scientists try to find out the order in which events happened during…

Slide 1Dating How can scientists determine the age of rocks and fossils? Slide 2 Geologic Principles Uniformitarianism The processes occurring today have been occurring since…

Slide 11 Earths History Slide 2 2 Planet Earth is approximately 4.5 X 10 9 years old –Rocks of the crust provide clues to Earths past By analyzing these clues we can infer…

Slide 1Absolute Dating Slide 2 A.D. is used when geologists want to know the actual numerical age of a rock layer. A.D. is used when geologists want to know the actual numerical…

Slide 1Haudenosaunee Unit Exam Review Power Point This power point is one of the review tools for the unit exam. You also need your notes and your crossword puzzle and you…

Slide 1Relative and Absolute Dating Slide 2 Relative dating - the age of a rock, fossil, or other feature measured compared to another. Slide 3 Absolute dating - (numerical…