definitions p (part one) click for each heading then for the answer physics is phun
TRANSCRIPT
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DefinitionsP (part one)
Click for each heading
then for the answer
Physics is
phun
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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
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pH• pH more than 7
base (blue)
• pH = 7
neutral (green)
• pH less than 7
acid (red)
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Pollination
• Transfer of pollen• From anther (of stamen)
• To stigma (of carpel)
• 2 methods WIND
• or INSECT
2 methods
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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
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Water Glucose + OxygenCarbon+Dioxide
Sunlight
Chlorophyll
Energy
Traps Light
Energy
Chemical Energy =
food
From air through stomata
From soil Through roots and
xylem
For respirationOUT to air
Through stomata
Photosynthesis Equation
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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
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Power
• Power = work done time taken
Measured in WATTS (W)
Also electrical power – more watts / more elec. Used per second
6W
60W
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Pooter
• Instrument for collecting small animals and insects in ecology
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Proton
• Particle inside an atom
• In the nucleus
• POSITIVE in charge
• How many??
• Atomic number (small number)
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Pregnancy
• Time when embryo or foetus is
• Developing in the womb (uterus)
• 9 months for human
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Phloem
• Tubes for carrying Food in plants
• (Flow-em …..Food)
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Premolars
• Type of tooth for crushing and grinding
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• 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)
Pressure
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Platelets
• Clot the blood
• Clotting stops bleeding
• Prevents entry of bacteria
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• Do I know it??
• Potential energy
• pH
• Pollination
• Photosynthesis•
Photosynthesis Equation•
Photosynthesis Experiment
• Power
• Pooter
•Proton•Pregnancy•Phloem•Premolars•Pressure•Platelets