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Definitions P (part one)

Physics is phun. Definitions P (part one). Click for each heading then for the answer. Potential Energy. Energy due to position or condition Water behind a dam or at top of waterfall Wound up spring e.g. wind up clock. pH. pH more than 7 base (blue) pH = 7 neutral (green)

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Definitions P (part one)

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  1. Physics is phun DefinitionsP (part one) Click for each heading then for the answer

  2. Potential Energy • Energy due to position or condition • Water behind a dam or at top of waterfall • Wound up spring e.g. wind up clock

  3. pH • pH more than 7 base (blue) • pH = 7 neutral (green) • pH less than 7 acid (red)

  4. 2 methods Pollination • Transfer of pollen • From anther (of stamen) • To stigma (of carpel) • 2 methods WIND • or INSECT

  5. Photosynthesis • Plants make food (and oxygen) • from carbon dioxide and water • using sunlight energy and chlorophyll • Test leaf for starch to see if photosynthesis has happened

  6. From air through stomata PhotosynthesisEquation Energy Chemical Energy = food Sunlight Carbon+ Dioxide Water Glucose + Oxygen Chlorophyll From soil Through roots and xylem Traps Light Energy For respiration OUT to air Through stomata

  7. Photosynthesis Experiment Leaf in hot water 10 mins To soften leaf Leaf in hot alcohol (A) 10 -15 mins To remove chlorophyll Leaf in hot water 5s To rinse leaf Add iodine Goes blue-black Starch is present

  8. 6W Power • Power = work done time taken Measured in WATTS (W) Also electrical power – more watts / more elec. Used per second 60W

  9. Pooter • Instrument for collecting small animals and insects in ecology

  10. Proton • Particle inside an atom • In the nucleus • POSITIVE in charge • How many?? • Atomic number (small number)

  11. Pregnancy • Time when embryo or foetus is • Developing in the womb (uterus) • 9 months for human

  12. Phloem • Tubes for carrying Food in plants • (Flow-em …..Food)

  13. Premolars • Type of tooth for crushing and grinding

  14. Pressure • Pressure = Force Area • Units = (Pa) pascals (N/m2) • Large area – small pressure • Small area – large pressure • High pressure = good weather • Barometer = measures atmospheric pressure • Pressure increases with depth ( shape of dams)

  15. Platelets • Clot the blood • Clotting stops bleeding • Prevents entry of bacteria

  16. Proton • Pregnancy • Phloem • Premolars • Pressure • Platelets • Do I know it?? • Potential energy • pH • Pollination • Photosynthesis • PhotosynthesisEquation • PhotosynthesisExperiment • Power • Pooter

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