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Notes on Diversity of Life, Fossils and Geologic Time
Present day Earth is in the Cenozoic era and the Quaternary period in the Holocene epoch. Geologic time has not ended. The geologic time scale is a record of the major events and diversity of life forms present in Earth’s history. The geologic time scale began when Earth …
eras of earth's history

[DOC File]Geologic Time Scale
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A rock contains fossils of a fish species that has been around since the Mesozoic Era. Can we accurately date the rock based on the fossils? Earth’s Environment. What evidence does your timeline provide for changes to Earth’s environment? Propose an explanation for why it took so long for an oxygen-rich atmosphere to form.
earth history timeline

[DOC File]Geologic Time - Mr. Ahearn's Earth Science
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The Earth’s years have been marked by geologic, environmental, and biological changes. Earth’s history is broken into large divisions called eons then eras, periods, and epochs. These categories help geologist better understand Earth’s long history. In this project you are going to take a closer look at one small part of Earth’s long ...
what are the four eras of earth

[DOC File]Geologic Time Scale Foldable Project
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On the top of this flap, write a description of Early Earth in your own words. Use pg. 288 as a resource. Label the flaps on the left-hand bottom portion of flap with the period and relevant time period. See #4. Use the same color to label PERIODS within the same ERA. Label the right hand side of the flap (in vertical writing) with the ERA.
periods of earth history

[DOC File]Major events in Earth’s geologic history
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EON ERA Period Epoch YEARS AGO WHAT WAS HAPPENING ON EARTH Precambrian 4.6 billion – 570 million years ago (mya) 3.5 billion years ago Cyanobacteria found in fossil record Invertebrates found in fossil record end of Precambrian 1.5 billion ya Grenville supercontinent existed 700mya Grenville supercontinent begins to breakup Phanerozoic
earth history timeline era

[DOC File]Earth Science, 12e (Tarbuck/Lutgens)
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14) The era of "ancient life" is the _____ era. A) Cenozoic B) Precambrian C) Neolithic D) Mesozoic E) none of these Answer: E Diff: 1 15) Due to a virtual absence of land plants and certain animals, fossil fuels are notably absent in _____ rocks.
earth time periods and eras

[DOCX File]Mrs. Saullo - Home
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During the Mesozoic Era the Earth is warm, so warm that there are no ice caps. Sea levels are lower, leaving different types of land masses for life. What is true about life on Earth at this time?A. large mammals appearedC. fish emerged during this timeB. arrival of amphibiansD. reptiles became the most abundant animals
geologic timeline

[DOCX File]Earth's Systems - Geologic time
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The early Cenozoic era saw the development and spread of early forms of many animals, including horses, sheep and cattle. Toward the end, the first human ancestors appeared. During the last phase of the Cenozoic era, much of Earth’s surface was covered by vast continental ice sheets. Continental glaciers moved across the Northern Hemisphere.
all eras of earth

[DOC File]Geologic Time Webquest
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Paleozoic Era. 9. When did the Paleozoic Era take place? 10. Where was Africa located during the Paleozoic Era? 11. Earth's greatest mass extinction (that we know about) took place at the end of the Paleozoic Era. What percent of Earth's species died off? Mesozoic Era. 12. Did cavemen live during the Mesozoic Era? Explain why or why not. 13.
eras of earth's history

[DOC File]Geologic Time Activity Worksheet
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Rocky Mountains are formed 80 million years First known fish 510 million years Paleozoic Era begins Earliest humans 2 million years Formation of the Earth 4.6 billion years First known mammal 200 million years Proterozoic Eon begins First single-celled organism 1.2 billion years 26.1 Columbus discovers America Oldest rock 3.8 billion years ...
earth history timeline

Era of earth