Baby Bottle Safety

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    14-Jan-2016
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Baby Bottle Safety. Elysia Burke. Purpose. The purpose of this experiment is to determine, using duckweed, the detrimental effects that the chemicals in microwaved baby bottles can have on a living organism. Hypothesis. - PowerPoint PPT Presentation

Transcript of Baby Bottle Safety

  • Baby Bottle SafetyElysia Burke

  • Purpose The purpose of this experiment is to determine, using duckweed, the detrimental effects that the chemicals in microwaved baby bottles can have on a living organism.

  • HypothesisIt is thought that the duckweed plants grown in the water which is microwaved in the plastic bottles will produce less fronds than those grown in the water from the microwaved glass jars. Additionally, it is hypothesized that the duckweed plants that are grown in water which is microwaved for longer periods of time will produce less fronds than those which are microwaved for a shorter period of time.

  • Background- MicrowavesForm of electromagnetic radiationwaves pass through containers and heat foodWaves cause water molecules in food to vibrate, producing heatFoods with a higher fat content produce more heatThe microwave heat can cause the plastic of a container to leach some of its components

  • Background- HDPEHDPE- High Density PolyethyleneExtensive research has proven that the ingredients in HPDE migrate in small amounts into the contents of a container when microwavedFound in common household objectsVariables which affect chemical migration are the length of time microwavedthe heat which is applied to the container

  • Background- DuckweedLemna MinorAsexual reproduction through buddinggrows new fronds from budding pouchespouches are located on either side of an axis at the basal end of the cellInvasive species- significant growth can be seen in 3 to 7 daysDaughter plants detach when matured

  • Duckweed Structure

  • Materials10 Nuby plastic baby bottles 5 glass jars15 plastic dishesduckweedmicrowavegrowing lampspring waterbeaker

  • Procedure

    180mL of water are poured into each container. containers are labeledControlFive glass jars are microwaved for 0, 2, 4, 6, and 8 minutes. two minutes microwaved, two minutes restCooled for 24 hours10 mL of water from each container is placed into each of four sections of a plastic dishfive duckweed plants are placed in each section. The plants are left to grow for four days under a growing lamp.the number of fronds of duckweed in each section are counted and recordedVariableprocedure is repeated for trials A and B of the plastic bottles.

  • Results

  • VariablesIndependent variable- amount of time container is microwavedDependent variable- number of fronds grown by each duckweed plantControl- the glass jarsConstants- time microwaved, location in microwave, amount of water in each container, amount of time left to cool, amount of time left to grow

  • Statistical Tests

  • Conclusion