Flashcards
Geo Unit 2 Study
Cards in this deck (10)
- 1What are the 4 geological eras in order from oldest to newest?Precambrian era, Paleozoic era, Mesozoic era, Cenozoic era
- 2In what era was the Canadian Shield formed?Precambrian Era
- 3What were the three main periods of the Mesozoic era from first to last?Triassic, Jurassic, Cretaceous
- 4In what era did the first vertebrate animals colonize on land?The paleozoic era
- 5Name three important changes that occurred in the Paleozoic era?Continents broke apart
Volcanic activity decreased
Air composition became a more modern ⅘ nitrogen and ⅕ oxygen
Sea levels rose
The Appalachian Mountains formed
The supercontinent Pangea formed
Plants became widespread
Marine life flourished
The first vertebrate animals colonized land - 6What is the name of the first multicellular creatures in the Precambrian era that required atmospheric oxygen?The Edicarans
- 7Name three important things/changes in the Precambrian era?Continental Shield rock began forming
Ocean life began
First living organisms formed
Canadian Shield formed
Comets cooled the earth and filled the oceans with water
70% of continental land mass formed - 8Name three important things/changes that occurred in the mesozoic era?Giant reptiles and dinosaurs roamed the Earth
Super hot temperatures. Much of the ocean was too hot to support marine life
Breakup of Pangea into 7 continents
Inuitian mountains formed
Three periods/sub eras. Triassic, Jurassic and Cretaceous - 9Name three important things/changes that occurred during the Cenozoic era?Continues to this day
Continental drift occurred
During the Pleistocene Epoch, glaciers covered central North America
Great lakes formed as glaciers receded
Mountain ranges formed including The Rockies, Himalayas, and Alps
Modern day inhabitants traced back to this era
Known as the age of the mammals
Widening of oceans caused marine life to thrive
Dinosaurs went extinct in the very beginning of this era - 10In what era did air composition reach more modern levels?Paleozoic era
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- Geological Era, Tectonic Plates, Landform regions, Rock cycle and Glaciation etc.
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- Aadam Lakhani
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