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Unit 5.Geologic Time

Unit 5

QuestionAnswer
What type of rock are fossils usually found in? Sedimentary rock
What is the first step in the formation of a fossil? something dies
What were the earliest forms of life on earth? Bacteria
A period where a large number of species dies out at the same time. Mass Extinction
Rock that forms when lava cools Igneous rock
Rock that froms from tiny pieces of rock and minerals that are pressed together. Sedimentary rock
A landmass that existed 250 million years ago, when all the continents were together. Pangea
When was the earth ? 4.6 Billion years ago
Created by: southeagles
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