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Grade 9 CCG1DZ Geography Final Exam (Units 1-4)
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Grade 9 CCG1DZ Geography Final Exam (Units 1-4)...
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Grade 9 CCG1DZ Geography Final Exam (Units 1-4)Explain the significance of the Pacific Ring of Fire. - Answer The Pacific Ring of Fire is
significant for its high seismic activity of active volcanoes and earthquakes. It holds
around 90% of all earthquakes and 70% of all active volcanoes.
Explain Alfred Wegener's theory of continental drift. - Answer His theory explained that
Earth's continents were once connected as one supercontinent, Pangaea, and have
since drifted apart over millions of years.
What evidence did Wegener use to suggest that all of the earth's landmasses once
formed a supercontinent called Pangaea? - Answer 1. The jigsaw fit between Africa and
South America.
2. The same fossils were found on both South America and Africa.
3. Appalachians (Canada's East Coast) and the Caledonian Mountains (Scandinavia) are
the same age and structure meaning they must have been connected at one time.
4. Evidence of ice sheets in India, Australia, South America, and Southern Africa.
Where was Canada located when it was a part of Pangaea? How do we know this? -
Answer It was located in the western point of the equator in the tropics zone. This is
evident because of our resources today. Fossils (of vegetation, insects, small animals,
etc.) were trapped in the layers of sedimentary rock; these fossils were compressed
from pressure and heated by the tropical climate, and transformed over millions of
years into the fossil fuels available today.
What was Alfred Wegener unable to explain regarding Continental Drift? - Answer He
was unable to explain how and why the plates moved in his theory of Continental Drift.
, Describe the theory of Plate Tectonics. Who developed this theory and how is it different
from Continental Drift? - Answer J. Tuzo Wilson developed the theory of plate tectonics.
He explained how the Earth's lithosphere is divided into tectonic plates that move and
interact with one another through convection currents.
Identify and describe the three different types of plate boundaries. - Answer
Convergent: Where two plates collide with each other.
Three types:
Continent —> Continent
Two continental plates colliding Collision causes mountain ranges and earthquakes
Continent —> Ocean (subduc.)
A continental and oceanic plate colliding Collision creates
Ocean —> Ocean (subduc.)
An oceanic and oceanic plate colliding
The older and colder plate will sink, creating a subduction zone.
Divergent: Where two plates move away from each other.
Transform: Where two plates slide past each other.
Why are most earthquakes and volcanoes located along plate boundaries? - Answer
Plate boundaries are where tectonic plates interact with each other, and this interaction
causes earthquakes and volcanoes.
This deadly fault line is located in California. - Answer The San Andreas Fault Line.
Name the landform region you live in. - Answer The St. Lawrence Lowlands.
Why do few Canadians live in Canada's north? - Answer There are harsh and cold
climates up north, and northern communities are typically isolated and have limited
access to resources and essential services.
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