Canada in a Global System: Physical Forces & Canadian Identity
Overall Focus
Canada does not exist in isolation; global physical systems have a significant impact on many aspects of Canada, including:
Weather
Land
Hazards
Coastlines
Canada’s unique physical geography further shapes:
Identity
Symbols
How people connect to place
Key Concepts
Global systems:
El Niño / La Niña
Jet stream
Ocean currents
Plate tectonics
Physical processes & hazards
Landscapes, landforms, and coastlines
Identity, symbols, and sense of place
Interconnections & spatial thinking
Learning Goals
Ability to explain how global physical systems (climate, tectonics, ocean currents) influence Canada.
Capability to analyze how Canada’s physical geography influences national identity and symbols.
Connection between place, environment, and identity.
Success Criteria
Description of cause-and-effect links between global systems and Canada.
Use of maps, images, or examples to support conclusions.
Ability to explain the significance of a physical feature or symbol for Canadians.
Making personal or community connections to place.
Minds On: “Canada Is Connected”
Think-Pair-Share Prompts:
How could events far from Canada still affect us?
Why do people around the world associate Canada with ice, forests, or mountains?
Global Physical Systems & Their Effects on Canada
Volcanic Activity and Weather Patterns
Large eruptions emit ash and gases into the atmosphere.
Effects of volcanic ash:
Blocks sunlight
Can induce cooling of the Earth
Winds and the jet stream contribute to spreading cooling effects globally
Effects in Canada:
Cooler summers or colder winters
Alteration in weather patterns
Potential negative impacts on farming and travel
Hurricane Fiona (2022)
Hurricane Fiona was a significant tropical cyclone that impacted multiple regions in mid-to-late September 2022.
Affected areas:
Caribbean countries
Bermuda
Atlantic Canada
Consequences of Hurricane Fiona:
Strong winds
Heavy rainfall
Flooding
Coastal erosion
Power outages in Nova Scotia, Prince Edward Island, and Newfoundland and Labrador
Despite weakening before landfall, it demonstrated the influence of far-formed hurricanes on Canada via global weather systems.
Arctic Climate Change
Arctic sea ice is diminishing rapidly – over 12% shrinkage per decade since 1979 due to global warming.
The Arctic region is warming nearly four times faster than the global average.
Feedback loop: Less ice results in less sunlight being reflected, creating warmer seas and causing more ice melting.
Predictions indicate summers could see nearly ice-free conditions by the 2040s or 2050s.
Effects in Canada:
Rising sea levels leading to coastal erosion
Damage to northern communities and infrastructure
Threats to Inuit culture, travel, and hunting practices
More frequent extreme weather events across Canada.
Global Physical Systems - Climate Systems
El Niño and La Niña
**Definitions:
El Niño:** A climate pattern characterized by warmer than normal water temperatures in the central and eastern Pacific, altering weather globally, including in Canada.
La Niña: A climate pattern identified by cooler than normal surface water in the central and eastern Pacific, also changing global weather patterns affecting Canadian temperatures and precipitation.
Effects in Canada:
El Niño: Can cause warmer winters and reduced snowfall in Canadian regions.
La Niña: Leads to colder winters and increased snowfall.
Both phenomena can result in severe storms, flooding, or droughts based on specific regional contexts.
Ocean Currents - The Gulf Stream
Definition
Ocean current: Continuous water movement in a specific direction driven by wind, temperature differences, salinity, and Earth's rotation.
Gulf Stream
Definition: A warm ocean current that transports heat and moisture from the Gulf of Mexico across the Atlantic Ocean towards Europe.
**Impact on Climate:
Atlantic Canada:** Benefits from the Gulf Stream’s warm air, leading to milder temperatures compared to regions at the same latitude, contributes moisture to the air, causing rain and snowstorms, and helps in generating strong storms along the Atlantic coast.
Atmospheric Systems - The Jet Stream
Definition
Jet Stream: A high-altitude, fast-moving band of strong winds flowing from west to east, influencing weather patterns.
Effects in Canada:
A southern dip of the jet stream can result in severe cold snaps.
A northward shift can lead to heat waves.
Variations trigger shifts in storm paths, precipitating heavy rain or snow across Canada.
The Polar Vortex
Definition
Polar Vortex: A large area of cold, low-pressure air that typically remains over the Arctic and can affect Canadian winters when displaced.
Effects in Canada:
A strong polar vortex maintains cold air in the Arctic.
When weakened or shifted, it allows Arctic air to move southward into Canada, causing severe cold and winter storms in southern regions.