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space and earth
notes
46
Science
12th Grade
09/24/2013

Additional Science Flashcards

 


 

Cards

Term
4.56 billion years ago
Definition
Earth forms
Term
first evidence of life
Definition
3.5 billion years ago
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1.1 billion years ago
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million years ago
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million years ago
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million years ago
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million years ago
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Definition
million years ago
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million years ago
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million years ago
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million years ago
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million years ago
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million years ago
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million years ago
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million years ago
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million years ago
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million years ago
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million years ago
Definition
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million years ago
Definition
Term
4.56 billion years ago
Definition
Earth forms
Term
4.4 billion years ago
Definition
oldest mineral grain found
Term
4.1 billion years ago
Definition
oldest piece of rock ever found
Term
3.9 billion years ago
Definition
oldest evidence of continent
Term
3.8 billion years ago
Definition
first evidence of life
Term
3.5 billion years ago
Definition
first fossil (algae and bacteria)
Term
1.8 billion years ago
Definition
free o2 in atmosphere
Term
1.1 billion years ago
Definition
first
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540 million years ago
Definition
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460 million years ago
Definition
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440 million years ago
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410 million years ago
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250 million years ago
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247 million years ago
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240 million years ago
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220 million years ago
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145million years ago
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65 million years ago
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30 million years ago
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5 million years ago
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1.8 million years ago
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40,000
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13,000
Definition
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8,000
Definition
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2,000
Definition
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500
Definition
Term
~34
Definition
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