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Submarine Life Support Investigation

Explore the essential elements for keeping a crew alive in a submarine. Investigate respiration and design life support systems. Suitable for ages 11-14.

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Submarine Life Support Investigation

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  1. Lesson 6 How does the crew stay alive? Submarine STEM Science | Ages 11 -14

  2. Lesson 6: Submarine life support investigation Starter – 7 signs of life All living things share the same 7 characteristics. Can you recall them? M - R - S - G - R - E - N - Extension: Can this robot be classified as alive? Why? Why not? 2

  3. Lesson 6: Submarine life support investigation Starter – 7 signs of life M - Movement R - Respiration S - Senses G - Growth and repair R - Reproduction E - Excretion N - Nutrition 3

  4. Lesson 6: Submarine life support investigation Topic overview Brief Over a series of lessons, design a submarine, and present and justify your ideas. Lesson 1 What shape should a submarine be? Lesson 2 How can a submarine be neutrally buoyant? Lesson 4 How deep can our submarine go? Lesson 5 What materials should a submarine be made from? Lesson 3 How can you launch or recover a submarine from a ship? Lesson 6 How does the crew stay alive? 4

  5. Lesson 5: Submarine life support investigation Mission brief – Lesson 6 This lesson explores what we need to consider to keep our crew alive underwater. Working inan enclosed spacedeep underwater for hours at a time has many risks. 5

  6. Lesson 6: Submarine life support investigation Learning outcomes Foundation Developing Competent Expert Advanced What is your minimum target? What is your challenge target? 6

  7. Lesson 6: Submarine life support investigation Task 1 – Respiration investigation Your challenge is to carry out a test to explore the effects of respiration. Then, answer the questions to consider how we design submersible vehicles to sustain life. Extension: Balance the symbol equation for respiration. 7

  8. Lesson 6: Submarine life support investigation Task 1 – Respiration investigation Blow gently! Avoid spillages! Don’t share straws! Reuse yourown. Limewaterturns cloudy when reacted with carbon dioxide 8

  9. Lesson 6: Submarine life support investigation Respiration Respiration is a chemical reaction that happens inside cells to produce energy. Respiration is NOT breathing – breathing provides the oxygen for respiration to take place. 9

  10. Lesson 6: Submarine life support investigation Respiration Can you use your mini whiteboards to balance the respiration equation? oxygen + glucose → carbon dioxide + water (+ energy) • O2 + C6H12O6 → CO2 + H2O 6 O2 + C6H12O6 → 6 CO2 + 6 H2O 10

  11. Lesson 6: Submarine life support investigation Life support Is it just oxygen that your crew will need? Make a spider diagram with your group of other requirements of the life support needed – and be ready to feedback your ideas! Oxygensupply ??? ??? Life support ??? ??? ??? ??? 11

  12. Lesson 6: Submarine life support investigation Life support Oxygensupply Remove carbon dioxide Control temperature Life support Removal of water that we breathe out Lightweight Fresh water supply Small 12

  13. Lesson 5: Submarine life support investigation Scrubbers They often contain soda lime, a chemical similar to the limewater in your investigation! Scrubbers are devices that remove carbon dioxide from the air amounts. The carbon dioxide reacts with the soda lime and is removed from the air in the submersible. 13

  14. Lesson 6: Submarine life support investigation Desiccants They contain chemicals such as silica gel. Desiccants are chemicals that absorb moisture from the air. You often see these small packets in products, like shoes, that need to be kept dry in storage! 14

  15. Lesson 5: Submarine life support investigation Task 2 – Life support design How will you ensure that your crew have everything they need to survive underwater? Complete the template you have been given. You may talk with your group about the questions, but you must complete and justify your own design. 15

  16. Lesson 6: Submarine life support investigation Hello scientists! Thank you so much for your input. You have really helped design our next submersible. What might change in the future when designing submersibles for underwater travel? What do you think is needed? I’d love to hear your thoughts. Don’t forget, you can always tweet us to let us know! Goodbye, and good luck! Oliver Steeds Reflection 16

  17. Lesson 6: Submarine life support investigation Final learning check Foundation Developing Competent Expert Advanced Did you meet you targets? 17

  18. Lesson 6: Submarine life support investigation Home learning Deep sea animals and their adaptations Research a deep-sea animal and explain how it is adapted to be able to survive at depths that a human being can’t. Present your research. 18

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