Ocean Currents and Global Heat

CONCEPTUAL

Science›Ocean Life|Ages 11—12|ID: mt_Mp_CpVK6e-

Explain thermohaline circulation (the global conveyor belt) as driven by temperature and salinity differences that cause dense water to sink; describe how the Atlantic Meridional Overturning Circulation (AMOC) transfers heat from the tropics toward Europe; explain that oceans absorb more than 90% of excess heat and ~25% of CO2 from human emissions; explore what would happen to Northern European climates if circulation weakened

Mastery Evidence

Assessment Prompt

“Can [child] explain why the UK has mild winters compared to parts of Canada at similar latitudes — what does ocean circulation have to do with it, and what might change if that circulation slows down?”

Prerequisites1

Oceans & Climate
hardAges 9—11

Show full prerequisite tree

Oceans & Climate hard
Thermohaline circulation mechanics depends on ocean and climate connections
- The Five Oceans soft
  Climate connection benefits from knowing ocean geography
  - Where water is found on Earth soft
    Five oceans builds on curriculum concept of where water is found on Earth
    - Shapes of land and water hard
      Must know land and water features before learning where water is found on Earth
      - Seasonal changes soft
        Seasonal observation supports understanding land and water features
        
        Days, Weeks, Months & Years soft
        Observing and describing seasonal changes requires basic date and time vocabulary (months, seasons, year)
        
        Ordering Events in Time hard
        Understanding days/months/years builds on sequencing events chronologically
    - Heating & Cooling Changes soft
      Understanding state changes supports knowing water as solid (ice) and liquid
      - States of Matter Vocabulary hard
        Describing and measuring changes of state requires solid/liquid/gas vocabulary and the term 'change of state'
      - Drawing Particle Diagrams hard
        Observing and describing change of state requires reading particle diagrams showing how arrangement changes on heating or cooling
  - What Is the Ocean? hard
    Naming five oceans requires knowing what oceans are
- Weather vs Climate soft
  Ocean-climate connection benefits from understanding weather vs climate distinction
  - Seasons & Weather Patterns soft
    Climate as long-term patterns benefits from knowing seasonal patterns
    - Seasonal changes soft
      Seasons/weather patterns parallels curriculum four seasons topic
      - Days, Weeks, Months & Years soft
        Observing and describing seasonal changes requires basic date and time vocabulary (months, seasons, year)
        
        Ordering Events in Time hard
        Understanding days/months/years builds on sequencing events chronologically
    - Types of Weather soft
      Seasons benefit from weather vocabulary
  - Geography & Local Weather hard
    Climate concept requires knowing that different places have different typical weather
    - Seasons & Weather Patterns hard
      Understanding global weather differences requires knowing seasons
      - Seasonal changes soft
        Seasons/weather patterns parallels curriculum four seasons topic
        
        Days, Weeks, Months & Years soft
        Observing and describing seasonal changes requires basic date and time vocabulary (months, seasons, year)
        
        Ordering Events in Time hard
        Understanding days/months/years builds on sequencing events chronologically
      - Types of Weather soft
        Seasons benefit from weather vocabulary
    - Types of Weather hard
      Comparing world weather requires weather vocabulary
  - Types of Weather hard
    Distinguishing weather from climate requires understanding weather first
- Tides, Waves & Currents hard
  Ocean-climate connection builds on knowing about currents and evaporation
  - Coasts & Beaches hard
    Tides shape coastal habitats; builds on beach/coast concept
  - What Is the Ocean? hard
    Tides/waves/currents require basic ocean knowledge
- Ocean Ecosystems hard
  Ocean as climate engine requires systems thinking
  - Ocean Food Webs hard
    Ecosystems as systems builds on food web understanding
    - Classifying Ocean Animals soft
      Food webs benefit from knowing animal classification groups
      - Whales & Dolphins Are Mammals hard
        Classifying marine mammals vs fish builds on whale/dolphin are mammals concept
        
        Ocean Animal Variety soft
        Mammals vs fish distinction benefits from knowing ocean animal variety
      - Ocean Animal Variety hard
        Classifying ocean animals builds on knowing the variety exists
    - Ocean Food Chains hard
      Food webs extend simple food chains to interconnected networks
      - What Ocean Animals Need soft
        Food chains explain how animals meet their need for food
        
        What Is the Ocean? soft
        Ocean animal needs are contextualised by knowing what the ocean is
      - Ocean Animal Variety soft
        Food chains benefit from knowing the variety of animals that eat each other
  - Ocean Depth Zones hard
    Ecosystem concept requires understanding different ocean zones
    - What Is the Ocean? hard
      Ocean zones require knowing the ocean is deep and vast
    - Ocean Animal Variety hard
      Understanding zones requires knowing ocean has diverse life at different depths
  - Changing Environments soft
    Ocean ecosystems concept enriched by curriculum concept that environments change
    - Habitats & Basic Needs hard
      Must understand how habitats support organisms before understanding what happens when they change
      - Where Are the Poles? soft
        Polar regions enrich the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
      - Habitat Vocabulary hard
        Describing how habitats provide for basic needs requires habitat, environment, conditions, shelter vocabulary
      - What Is a Rainforest? soft
        Rainforest habitat knowledge enriches the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
      - What Living Things Need hard
        Must know basic needs of organisms before understanding how habitats provide for those needs
        
        Common Plants & Trees soft
        Knowing plants helps understand what they need
        
        Living Things Vocabulary soft
        Describing what plants and animals need to survive uses life processes vocabulary: nutrition, growth, sensitivity
        
        Naming Common Animals soft
        Knowing animals helps understand what they need
      - What Ocean Animals Need soft
        Ocean animal needs parallels curriculum habitats/basic needs concept
        
        What Is the Ocean? soft
        Ocean animal needs are contextualised by knowing what the ocean is
      - Animal Homes soft
        Animal homes concept is enriched by curriculum habitats topic
        
        Animals Everywhere hard
        Animal homes builds on knowing animals live everywhere
      - Living, Dead & Never Alive hard
        Must distinguish living from non-living before understanding habitats that support living things
        
        Common Plants & Trees soft
        Knowing plant names helps distinguish living from non-living
        
        Living Things Vocabulary hard
        Comparing living, dead, and never-been-alive things requires the life processes vocabulary to give reasons
        
        Naming Common Animals soft
        Knowing animal groups helps distinguish living from non-living
      - Minibeast Habitats soft
        Exploratory micro-habitats knowledge enriches curriculum habitats topic
        
        Common minibeasts: naming and recognising hard
        Must recognise common minibeasts before exploring where each type lives
        
        What is a minibeast? hard
        Must understand what minibeasts are before learning to name specific ones
    - Simple Food Chains soft
      Food chain knowledge helps understand knock-on effects of environmental change
      - Herbivores, Carnivores & Omnivores hard
        Must know carnivore/herbivore/omnivore to understand food chains
        
        Naming Common Animals hard
        Must identify animal groups before classifying by diet
      - Habitats & Basic Needs hard
        Must know about habitats and interdependence before learning food chains
        
        Where Are the Poles? soft
        Polar regions enrich the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
        
        Habitat Vocabulary hard
        Describing how habitats provide for basic needs requires habitat, environment, conditions, shelter vocabulary
        
        What Is a Rainforest? soft
        Rainforest habitat knowledge enriches the curriculum habitats topic (exploratory age 5 -> curriculum age 6)
        
        What Living Things Need hard
        Must know basic needs of organisms before understanding how habitats provide for those needs
        
        Common Plants & Trees soft
        Knowing plants helps understand what they need
        
        Living Things Vocabulary soft
        Describing what plants and animals need to survive uses life processes vocabulary: nutrition, growth, sensitivity
        
        Naming Common Animals soft
        Knowing animals helps understand what they need
        
        What Ocean Animals Need soft
        Ocean animal needs parallels curriculum habitats/basic needs concept
        
        What Is the Ocean? soft
        Ocean animal needs are contextualised by knowing what the ocean is
        
        Animal Homes soft
        Animal homes concept is enriched by curriculum habitats topic
        
        Animals Everywhere hard
        Animal homes builds on knowing animals live everywhere
        
        Living, Dead & Never Alive hard
        Must distinguish living from non-living before understanding habitats that support living things
        
        Common Plants & Trees soft
        Knowing plant names helps distinguish living from non-living
        
        Living Things Vocabulary hard
        Comparing living, dead, and never-been-alive things requires the life processes vocabulary to give reasons
        
        Naming Common Animals soft
        Knowing animal groups helps distinguish living from non-living
        
        Minibeast Habitats soft
        Exploratory micro-habitats knowledge enriches curriculum habitats topic
        
        Common minibeasts: naming and recognising hard
        Must recognise common minibeasts before exploring where each type lives
        
        What is a minibeast? hard
        Must understand what minibeasts are before learning to name specific ones
      - Ocean Food Chains soft
        Ocean food chain parallels curriculum simple food chain concept
        
        What Ocean Animals Need soft
        Food chains explain how animals meet their need for food
        
        What Is the Ocean? soft
        Ocean animal needs are contextualised by knowing what the ocean is
        
        Ocean Animal Variety soft
        Food chains benefit from knowing the variety of animals that eat each other
      - Minibeasts in the food chain soft
        Garden minibeast food chains provide concrete examples for curriculum simple-food-chains
        
        Common minibeasts: naming and recognising hard
        Must know common minibeasts before placing them in food chains
        
        What is a minibeast? hard
        Must understand what minibeasts are before learning to name specific ones
      - Rainforest Animals soft
        Rainforest animals provide rich examples for simple food chains (exploratory age 5 -> curriculum age 6)
        
        Rainforest Layers hard
        Animals are taught in context of which layer they inhabit
        
        What Is a Rainforest? hard
        Must know what a rainforest is before learning its four layers
    - Habitat Vocabulary soft
      Discussing how environments change and pose dangers uses habitat and conditions vocabulary

Unlocks1

Coral Bleaching & Acidification
hardAges 12—13