Definitions P (part one) Click for each heading then for the answer Physics is phun

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) pH less than 7 acid (red)

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

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

WaterGlucose +Oxygen Carbon+ Dioxide Sunlight Chlorophyll Energy Traps Light Energy Chemical Energy = food From air through stomata From soil Through roots and xylem For respiration OUT to air Through stomata Photosynthesis Equation

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

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

Pooter Instrument for collecting small animals and insects in ecology

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

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

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

Premolars Type of tooth for crushing and grinding

Pressure = Force Area Units = (Pa) pascals (N/m 2 ) Large area – small pressure Small area – large pressure High pressure = good weather Barometer = measures atmospheric pressure Pressure increases with depth ( shape of dams) Pressure

Platelets Clot the blood Clotting stops bleeding Prevents entry of bacteria

Do I know it?? Potential energy pH Pollination Photosynthesis Photosynthesis Equation Photosynthesis Experiment Power Pooter Proton Pregnancy Phloem Premolars Pressure Platelets