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31 Cards in this Set
- Front
- Back
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If earth were bigger |
Gravity would be greater And Atmosphere would be hostile: ammonia/methane |
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If earth were smaller |
Contain no atmosphere |
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Without plate techtonics |
Entire planet cover with ocean |
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Without the outer core |
No magnetic field to protect us from cosmic rays |
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Closer to sun |
To hot |
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Further from sun |
To cold |
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If earth's solar system had a Bigger star |
Would burn out before life taken place |
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Invertebrates period of time |
Cambrian and ordovician (Which is in the paleizoic era) |
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Age of fishes |
Silurian and devonian (which is in the paleozoic era) |
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Age of amphibians |
(Missisipian and pennsylvanian) =carbiniferous And Permian (which is in the paleozoic era) |
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Age of reptiles |
Triassic Jurassic Cretaceous (Which are all in the mesozoic era) |
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Earth's atmosphere |
First was hydrogen and helium 2. Carbon 3.oxygen |
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Photosynthesis occured in which period |
Archean |
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New crust, with granite occurred in which period |
Archean |
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Banded iron deposits |
Archean Hadean Proterozoic |
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The universe began how long ago |
13.7 billion |
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Supernova creates |
Most the elements like iron |
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Planetesimals |
Asteroid sized objects |
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Outgassing |
Gasses trapped in earth's interior are released |
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Craton |
Formation of large crust chunks |
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Shield |
Multiple cratons fused together |
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Sea level change |
Because of super continent formation |
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Laurasia |
Large Northern continent |
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Gondwana |
Large southern continent |
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Prokaryotes |
Single cell bacteria |
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Stromalites |
Layered slimy bacteria deposited by cyanobacteria |
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Eukaryotes |
Oldest advanced organism |
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Continental Crust formed by |
Recycle of oceanic crust |
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Angiosperm |
Flowering plants with covered seeds |
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Gymnosperms |
1st on land plant Looked like Pine cones/pineapples |
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Cambrian explosion |
Golden age of trilobites |
