Common mistakes
Point 24 of 24 — Module 7 — Effect of Atmospheric Gases, Light and Water Pressure on Aquatic EnvironmentsQuestion bank: 0 questions (0 with pictures)
24 Common mistakes
- Writing that gases are more soluble in hot water. Gases are less soluble when temperature rises.
- Saying that CO₂ makes water "basic". It forms carbonic acid and lowers pH.
- Forgetting to add atmospheric pressure when asked for the total pressure at depth.
- Believing that most photosynthesis happens at the bottom. It happens in the sunlit surface zone.
- Confusing calcification (building CaCO₃ shells) with acidification (fall in pH). More CO₂ → more acidification and less calcification.
- Using centimetres or grams in P = ρgh. Use kg/m³ and metres.
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