Relative Time. Relative Dating Relative dating – events are placed in a sequence, but actual occurance dates are unknown. Who is older, Mr. Kopp or Justin.
Time- a limited period or interval, as between two successive events. Seconds Minutes Hours Days Years.
Lecture Notes – Geologic Eras. Geologic Timescale The geologic timetable is divided into 4 major eras: The oldest era is called the Pre-Cambrian Era.
Bacterial Evolution First living cells were prokaryotes Single celled, NO NUCLEUS Change in Earths atmosphere 1 st living organism Archeobacteria.
Scientific Classification What’s In a Name??. What are some ways you are classified? gender gender age age social security number social security number.
Recording natural history. Break-down of time Different periods of Earth’s history are broken into periods of time,just like a year is broken into months,
CH 25 ~ HISTORY OF LIFE ON EARTH. The Origin of Life 1 st fossil evidence 3.5 BYA (Earth ~4.6 BY old) 4 stages 1 – abiotic synthesis of organic.
Origin of Life
The Quick Story
1 Billion Years of PNW Geology in 10 (text) Slides or Less.
EVOLUTION! Many misconceptions All that it means= LIVING THINGS CHANGE OVER TIME.
