Biology HL
Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme A - Unity & diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme D - Continuity & Change
Biology HL
Biology HL

Theme D - Continuity & Change

Ocean Current Shifts Climate Change's Impact on Marine Life

Word Count Emoji
421 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

🔍 Main Idea: The ocean has layers. How these layers mix (or don't mix) is affected by climate change, which can impact marine life, ocean currents, and even global warming!

The Layered Ocean - Making Sense of Stratification

  • Stratification is the layering of the ocean based on density.
  • Think of a Stratified Fruit Salad 🍎🍌🍇
    • Top Layer: Warm, light, less salty water.
    • Bottom Layer: Cold, dense, salty water.

Mixing it Up - How & Why?

  • The layers mix due to currents, winds, and tides.
  • Imagine pouring cream into hot coffee ☕ - It swirls and eventually mixes.
  • The greater the difference in density, the harder to mix.
  • If there's reduced mixing, the ocean is more stable.

A Warming 🌏 & a Stable Ocean

  • A hotter climate = more stable ocean.
  • Recipe for a Stable Ocean 📜
    • Warm the surface water - it expands!
    • Melt some ice - freshwater pours in, reducing saltiness.
  • More stability = less heat, oxygen, and CO₂ transfer to the deep ocean.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟

Nail IB's App Icon
IB Resources
Theme D - Continuity & Change
Biology HL
Biology HL

Theme D - Continuity & Change

Ocean Current Shifts Climate Change's Impact on Marine Life

Word Count Emoji
421 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

🔍 Main Idea: The ocean has layers. How these layers mix (or don't mix) is affected by climate change, which can impact marine life, ocean currents, and even global warming!

The Layered Ocean - Making Sense of Stratification

  • Stratification is the layering of the ocean based on density.
  • Think of a Stratified Fruit Salad 🍎🍌🍇
    • Top Layer: Warm, light, less salty water.
    • Bottom Layer: Cold, dense, salty water.

Mixing it Up - How & Why?

  • The layers mix due to currents, winds, and tides.
  • Imagine pouring cream into hot coffee ☕ - It swirls and eventually mixes.
  • The greater the difference in density, the harder to mix.
  • If there's reduced mixing, the ocean is more stable.

A Warming 🌏 & a Stable Ocean

  • A hotter climate = more stable ocean.
  • Recipe for a Stable Ocean 📜
    • Warm the surface water - it expands!
    • Melt some ice - freshwater pours in, reducing saltiness.
  • More stability = less heat, oxygen, and CO₂ transfer to the deep ocean.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟