GeologicalTimeScale Word Scramble
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Question | Answer |
how many eras is the time scale divided into? | 4 |
waht are the four eras in order | precambrian, peleozoic mesozoic and cenozoic |
Precambrian Era- | Is the oldest era and lasted the longest amount of time (approx. 4 billion years). Organisms were bacteria, sea pens (fans) and jellyfish. |
Paleozoic Era (age of fishes | Is made up of the Cambrian, Ordovician, Silurian, Devonian (age of amphibians), Carboniferous (age of forests), and Permian (extinction of trilobites). |
Mesozoic | Is made up of Triassic, Jurassic, and the Cretaceous Periods. The Mesozoic Era is the age of Dinosaurs. |
when did dinosaurs become extinct | `65 millions years ago |
how many theories about dinosaur extinction are ther | 3 |
A large astroid hit Earth resulting in an Ice Age. The astroid hit the Yucatan Peninsula. | ... |
A large Super Volcano (Mount Tambour erupted causing an Ice Age. | ...... |
India runs into Asia, causing the ice caps to melt, which indirectly caused an Ice Age. | ............... |
cenozoic | Is made up of the Tertiary and Quaternary Periods. The Cenozoic Era is the age of mammals. |
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