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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) - PowerPoint PPT Presentation
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DefinitionsP (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
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
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
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/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
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