Term
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Definition
Precambrian Era-
Earth formed into a planet
first billion years was lifeless
after oceans formed, cell organisms developed 3.5BYA
Canadian shield Landform Region fomed
Towards the end multi cell organisms started to develop |
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Term
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Definition
Cambrian explosion
Massive life expansion on earth
Throughout next several million years there were mass extinctions
life emerged from oceans and colonized on land
350MYA super continent Pangea was formed
During end Amphibians developed |
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Term
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Definition
Age of dinosaurs
Tectonic activity created western cordillera
Tectonic activity split Pangea into two continents- Laurasia and Gondwanaland
Towards end mammals developed
At end dinosaurs became extinct because of meteorite |
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Term
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Definition
Mammals evolved to humans
Over next hundreds of thousands of years modern day humans developed
Continents shifted into current positions
Inland seas dried up and formed interior plains in North America |
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Term
| What evidence of the continental drift is there? |
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Definition
-Continents appear to fit together
-Same type and age fossils and organisms are found on either side of the continents
-Grooves and rock deposits left by ancient glaciers are on different continents close to the equator. |
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Term
| Who is responsible for the theory? |
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Definition
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Term
| Who developed tectonic plates theory? |
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Definition
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Term
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Definition
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Term
| What is the ring of fire? |
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Definition
| It is in the pacific ocean and is an area where a large amount of earthquakes ad volcanic eruptions occur. |
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Term
| What drives plate movement? |
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Definition
| Plates are pushed around by convection currents in the molten magma beneath them. |
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| What are different types of plate movement and what are their related land forms? |
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Definition
Divergent- The plates move a part from each other in different directions (creates mid ocean ridge)
-Convergent- when the plate move towards each other and are forced upwards.(continental plates fold against each other and fold upwards)
-Transform-Plates move past each other in different directions. |
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