Podcast
Questions and Answers
Which of the following is NOT a type of plate movement?
Which of the following is NOT a type of plate movement?
- Transform
- Transverse (correct)
- Divergent
- Convergent
What is the name of the layer that tectonic plates ride on top of?
What is the name of the layer that tectonic plates ride on top of?
- Mantle
- Lithosphere
- Asthenosphere (correct)
- Crust
What happens when two tectonic plates collide?
What happens when two tectonic plates collide?
- Mountains are formed
- Volcanoes are formed
- Earthquakes occur
- All of the above (correct)
What is the relationship between the lithosphere and the tectonic plates?
What is the relationship between the lithosphere and the tectonic plates?
What is the largest layer of the Earth?
What is the largest layer of the Earth?
What is the main effect of divergent plate movement?
What is the main effect of divergent plate movement?
Which of the following is NOT a proof of the existence of Pangaea as mentioned in the text?
Which of the following is NOT a proof of the existence of Pangaea as mentioned in the text?
What is the significance of tectonic plates being in constant motion?
What is the significance of tectonic plates being in constant motion?
What is the approximate temperature range of the Earth's mantle?
What is the approximate temperature range of the Earth's mantle?
What is the approximate thickness of the Earth's outer core?
What is the approximate thickness of the Earth's outer core?
What is the composition of the Earth's oceanic crust primarily made of?
What is the composition of the Earth's oceanic crust primarily made of?
What evidence does the text provide to support the fact that the Earth's mantle is active?
What evidence does the text provide to support the fact that the Earth's mantle is active?
What is the main difference between the Earth's inner core and outer core?
What is the main difference between the Earth's inner core and outer core?
What is the approximate age of the Earth?
What is the approximate age of the Earth?
Which of the following is NOT a type of plate boundary?
Which of the following is NOT a type of plate boundary?
Which of the following is a characteristic of an intrusive igneous rock?
Which of the following is a characteristic of an intrusive igneous rock?
What is the main difference between divergent and convergent plate boundaries?
What is the main difference between divergent and convergent plate boundaries?
Which of the following rocks is formed by the process of compaction and cementation?
Which of the following rocks is formed by the process of compaction and cementation?
Which type of plate boundary is most likely to form a mountain range like the Himalayas?
Which type of plate boundary is most likely to form a mountain range like the Himalayas?
What happens when an oceanic plate subducts beneath a continental plate?
What happens when an oceanic plate subducts beneath a continental plate?
What is the primary difference between magma and lava?
What is the primary difference between magma and lava?
Which of the following is an example of a metamorphic rock?
Which of the following is an example of a metamorphic rock?
Which of the following features is most likely to be found at a divergent plate boundary?
Which of the following features is most likely to be found at a divergent plate boundary?
Why are earthquakes common near transform plate boundaries?
Why are earthquakes common near transform plate boundaries?
What is the primary cause of weathering and erosion?
What is the primary cause of weathering and erosion?
Which of the following is NOT a characteristic of a hot spot?
Which of the following is NOT a characteristic of a hot spot?
What is the main cause of tsunamis?
What is the main cause of tsunamis?
What is the Ring of Fire?
What is the Ring of Fire?
Which of the following statements accurately describes what happens to the plates involved in a divergent plate boundary?
Which of the following statements accurately describes what happens to the plates involved in a divergent plate boundary?
Which of the following is an example of an extrusive igneous rock?
Which of the following is an example of an extrusive igneous rock?
What distinguishes the Canadian Shield from other landforms in Canada?
What distinguishes the Canadian Shield from other landforms in Canada?
What is a major factor that contributes to the challenges associated with development in the Western Cordillera?
What is a major factor that contributes to the challenges associated with development in the Western Cordillera?
What is the primary reason for the formation of the Interior Plains?
What is the primary reason for the formation of the Interior Plains?
Which of the following landforms are directly attributed to the actions of glaciers?
Which of the following landforms are directly attributed to the actions of glaciers?
What is the main reason for the limited vegetation growth in the Canadian Shield?
What is the main reason for the limited vegetation growth in the Canadian Shield?
Flashcards
Continental Drift
Continental Drift
The theory that continents were once joined and have since drifted apart.
Plate Tectonics
Plate Tectonics
The theory that Earth's outer shell is made up of moving plates.
Tectonic Plates
Tectonic Plates
Massive slabs of solid rock that make up Earth's lithosphere.
Lithosphere
Lithosphere
The rigid outer layer of the Earth, composed of crust and upper mantle.
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Divergent Boundaries
Divergent Boundaries
Plate boundaries where two plates move apart.
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Convergent Boundaries
Convergent Boundaries
Plate boundaries where two plates move towards each other.
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Transform Boundaries
Transform Boundaries
Plate boundaries where two plates slide past each other.
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Convection Currents
Convection Currents
Movements in the mantle caused by heat, driving plate movements.
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Physical Geography
Physical Geography
The study of the natural processes and patterns of the earth's environment.
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Layers of the Earth
Layers of the Earth
The three main layers are the crust, mantle, and core.
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Crust
Crust
The outermost layer of the Earth, where we live, consisting of continental and oceanic crust.
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Mantle
Mantle
The largest layer of the Earth, making up 85% of its volume, where temperatures range from 1,000℃ to 3,700℃.
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Core
Core
The dense and hot center of the Earth, divided into the outer and inner core, with temperatures of 5,000-6,000℃.
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Continental Crust
Continental Crust
The thick part of the Earth's crust that forms the continents, mainly consisting of various types of rock.
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Oceanic Crust
Oceanic Crust
The thinner part of the Earth's crust located under the oceans, primarily made of magnesium and silicate.
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Pangaea
Pangaea
The supercontinent that existed 300 million years ago, when all land masses were joined together.
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Plate Boundaries
Plate Boundaries
Regions where tectonic plates interact, leading to earthquakes and volcanoes.
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Divergent Plate Movement
Divergent Plate Movement
Occurs when two tectonic plates move apart, often forming ridges.
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Mid-Atlantic Ridge
Mid-Atlantic Ridge
An underwater mountain range formed by diverging tectonic plates.
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Subduction
Subduction
The process where a denser oceanic plate slides beneath a continental plate.
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Oceanic Trench
Oceanic Trench
Deep valleys formed by the subduction of oceanic plates.
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Continental Collision
Continental Collision
When two continental plates collide, pushing up land to form mountains.
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Transform Plate Movement
Transform Plate Movement
Occurs when two tectonic plates slide past each other horizontally.
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Volcanoes at Plate Boundaries
Volcanoes at Plate Boundaries
Volcanoes often form near plate boundaries where magma can escape.
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Hot spots
Hot spots
Volcanic regions situated in the middle of tectonic plates, creating chains of volcanoes.
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Magma
Magma
Molten rock located beneath the Earth's crust before it erupts as lava.
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Lava
Lava
Molten rock that has erupted onto the Earth's surface.
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Igneous rocks
Igneous rocks
Rocks formed from the cooling of magma or lava, either below or above the surface.
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Sedimentary rocks
Sedimentary rocks
Rocks formed by the compaction and cementation of loose sediments over time.
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Metamorphic rocks
Metamorphic rocks
Rocks altered by heat and pressure from other rock types.
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Weathering and erosion
Weathering and erosion
Processes that break down rocks through water and wind movement.
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Canadian Shield
Canadian Shield
The largest geological formation in Canada, created first during Pangea.
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Weathering
Weathering
The process of rocks breaking down due to repeated actions like rain freezing and expanding.
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Glacial Lakes
Glacial Lakes
Depressions caused by glaciers fill with water, creating lakes.
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Western Cordillera
Western Cordillera
The youngest mountain range in Canada formed by plate collisions.
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Urban Sprawl
Urban Sprawl
Uncontrolled expansion of single-family dwellings in urban areas.
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Introduction to Physical Geography
- Physical geography is the study of Earth's physical features and processes.
- It examines the natural environment and patterns.
- Key questions include: How did Earth's features form and why do they exist?
Earth's Layers
- Earth has three main layers: crust, mantle, and core.
- Crust: The outermost layer, where we live.
- Composed of continental and oceanic crust.
- Continental crust is thicker, while oceanic crust is thinner and denser, mostly magnesium and silicate.
- Mantle: The largest layer, representing about 85% of the Earth's volume.
- Temperature ranges from 1000°C to 3700°C.
- It's always active and is in constant motion.
- Core: The innermost layer, extremely dense and hot.
- Estimated at 5000-6000°C.
- Divided into two parts: a liquid outer core and a solid inner core.
- The outer core is primarily made of liquid iron and nickel, while the inner core is solid.
- Intense heat and pressure prevent complete melting of the iron and nickel.
Plate Tectonics
- Earth's lithosphere is divided into plates.
- These plates move relative to each other.
- Three types of plate movement:
- Divergent: Plates move apart, creating new crust.
- Convergent: Plates move together, leading to collisions and subduction (one plate sliding under another).
- Transform: Plates slide past each other horizontally.
- The interaction of tectonic plates causes earthquakes, volcanoes, and mountain formation.
Rocks and Rock Types
- Rocks are composed of various minerals and are categorized into three main types:
- Igneous: Formed from the cooling of magma or lava. Further divided into intrusive (cool below Earth's surface) and extrusive (cool on Earth's surface) varieties.
- Sedimentary: Formed from the accumulation and compression of sediments.
- Metamorphic: Formed from the transformation of existing rocks by heat and pressure.
Geographic Features and Processes
- Different landscapes result from processes like weathering, erosion (by wind, water, and ice), and glacier formation.
- Examples include the Canadian Shield which is the large area of exposed older metamorphic and igneous rocks.
- Also, the Western Cordillera, a mountain range that was formed when two tectonic plates collided.
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