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This presentation created by :

This presentation created by :. A na Novia Rahmawati (04) Hemas Surya ningrum (07) Hendy Aditama (09) Rahayu Hana Wijayanti . ( 20 ). Expiration and inspiration. Respiration occurs in many step. Gasses exchange step between oxygen that entered with carbondioxide. What is our goal?.

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  1. This presentation created by : • AnaNoviaRahmawati (04) • Hemas Surya ningrum(07) • Hendy Aditama(09) • RahayuHanaWijayanti. (20)

  2. Expiration and inspiration

  3. Respiration occurs in many step. Gasses exchange step between oxygen that entered with carbondioxide

  4. What is our goal? • Knowing difference of CO2 content in the air of expiration and inspiration. • Understanding that water vapour as waste subtance of respiration.

  5. What must we have? • Glass pipe • Lime water • Three pieces of reaction tube • Mirror • stopwatch

  6. What should we do? Arrange experiment equipment like in figure below ! Blow expiration air through pipe 1A for 3 minutes. Observe What change happen ! Suck Inspiration air through pipe 2B for 3 minutes. Then observe the change happen ! Compare A and B experiment with tube c as control !

  7. Our task : Please make the laboratory report about that examination in group !

  8. What will we discuss? • Activities 1 : • How is the condition of limewater in A and B experiment? Why it happens? • Make conclusion from that activity ! • Activities 2 : • After blow to mirror, what does appear from that mirror? • Why does mirror become wet? Explain ! • Make conclusion from that activity 2 !

  9. Answer :

  10. Expiration (releasing the air from lungs) is the air will be released from the respiration organs. Inspiration ( drawing the air into the lungs) is when we inhale, the air will enter the respiratory organs. 1.

  11. 2 Inhaled Air ( inspiration) Exhaled Air (expiration) Water Vapour various 100%

  12. Activities 1 1. The equipment is :1. Glass pipe 2. Lime water 3. Three pieces of reaction tube 4. Mirror 5. stopwatch

  13. 2. 2. Tube A Exhale into the tube through straw number 1 for about 3 minutes. When we inhale, the air will enter the respiration organs. This air is called inhaled air. 3. Tube B Inhale the air from the tube through straw number 2 for about 3 minutes. On the other hand, when exhaling the air will be released from the respiration organs. This air is called exhaled air ( expiration)

  14. Activities 2 • The mirror be clean. The dust in the mirror is fly. • If we wipe the mirror with our hand, we felt cold in our hand.

  15. Thank You

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