welcome to science 71
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Welcome to Science 71. April 29, 2014 Day 142. Period B Rules. “ I promise to check the sink at the end of class, and …”. America Recycles Day is coming! Make it Zero Waste Day!. Objective. Explain and provide examples of methods of heat energy transfer - PowerPoint PPT PresentationTRANSCRIPT
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Welcome to Science 71
April 29, 2014Day 142
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Period B Rules
“ I promise to check the sink at the end of class, and …”
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America Recycles Day is coming!Make it Zero Waste Day!
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Objective Explain and provide examples of methods of heat energy
transfer Illustrate and describe the kinetic theory of matter,
including phase changes. Demonstrate an understanding of the relationship between
kinetic and potential energies. The Main 3 Components to Electricity
STUDENT VERNACULAR Using vocabulary explain how heat moves from place to
place, matter to matter Using vocabulary explain how Kinetic Energy is
responsible for the various states of matter (Solid, Liquid, Gas, etc)
How does an objects Energy level change as it moves from Potential Energy (PE) to Kinetic Energy (KE)
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AgendaToday’s Objective
Bell WorkNotesVocabulary Puzzle What is PE and KE?Discussion on Worksheets
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Bell WorkLooking at the items below, which
ones are Potential Energies?
A. AppleB. FireC. WoodD. Book on ShelfE. Student running in gym
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Bell WorkLooking at the items below, which
ones are Kinetic Energies?
A. BatteryB. Unlit CandleC. Turned on Light bulbD. Car in park on steep hillE. Cold Pizza
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EnergyWhat is Energy?How do you define Energy?
Class Examples
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EnergyEnergy
- The ability to do work-Be it Potential or Kinetic-Be it Mechanical, Thermal, Chemical, Electrical, Electromagnetic, Nuclear
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EnergyBased upon Two Primary Categories:
Potential Kinetic
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EnergyKinetic
Energy of UseEnergy of MotionEnergy of NOW!
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EnergyEureka #9 ClipKinetic Energy
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EnergyPotential
Energy that is Stored.It is Potential
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EnergyEureka #10 ClipPotential Energy
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Bell WorkAt what point does
the diver have the most energy?
A. 1B. 2C. 3D. 4E. Not Sure
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EnergyConservation of Energy.Energy is Neither Created or Destroyed
All Energy Must be Accounted For!
It can only change form
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Energy
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EnergySecondary Categories:
MechanicalThermalChemicalElectricalElectromagneticNuclear
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EnergySecond Category
Mechanical-Associated with motion or position of object
-K or P-Every Monday Students use Mechanical Energy to move from class to class
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EnergySecond Category
Thermal-Total KE of all particles in an object
-Ice Cream
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EnergySecond Category
Chemical-Energy Stored in chemical bonds
-Candles
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EnergySecond Category
Electrical-Moving electrical charges (electrons)
-Power to run E Devices
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EnergySecond Category
Electromagnetic Energy (Radiation)
-Energy travels in Waves
-UV, IR, Microwaves
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EnergySecond Category
Nuclear Energy-Stored in Nucleus of Atom
-Fission vs. Fusion-Sun, Stars, Powerplants
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Bell WorkWhat type of Energy
does this object represent best?(1)
A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear
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Bell WorkWhat type of Energy
does this object represent best?(1)
A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear
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Bell WorkWhat type of Energy
does this object represent best?(1)
A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear
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Bell WorkWhat type of Energy
does this object represent best?(1)
A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear
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Bell WorkWhat type of Energy
does this object represent best?(1)
A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear
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Bell WorkWhat type of Energy
does this object represent best?(1)
A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear
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Bell WorkWhat type of Energy
does this object represent best?(1)
A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear
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Bell WorkPlease put the items below into two
categories (You choose the grouping)
Hydroelectric Oil CoalPetroleum Biodiesel GasWind Turbine Biomass Solar
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Energy TermsRenewable EnergyEnergy sources that can be replaced, or replenished.
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Energy TermsHydroelectric-
Electricity being made by hydro-water
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Energy TermsBiomassWood/Forests-Energy stored in trees in the carbon chemical bonds. Energy is old sunlight!
Extra-(maple syrup)
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Energy TermsPhotovoltaic-
Electricity being made by converting Sunlight/Visible Light.
Solar Panels
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Energy TermsTidal Turbine-
Energy production from the movement of ocean tides
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Energy TermsWave Turbine-
Electricity produced by the movement of waves.
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Energy TermsBio-fuelsBioethanolBiodiesel-
Fuel made from vegetables and grain
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Energy TermsWind Turbine-
Electricity produced from the conversion of wind.
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Energy TermsNon-Renewable
Energy sources that once used, are non replaceable.
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Energy TermsFossil FuelsAncient Stored SunlightCoal, Oil, Natural GasConsidered the Catalyst for Accelerated Global Warming (Climate Change)
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Energy TermsCoal-
Energy Source made of preserved swamp ecosystems. Water/Mud preserved. Largest world-wide energy source for producing electricity
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Energy TermsOil-Petroleum
Naturally occurring liquid found in Earth, comprised of ancient Zooplankton and Algae, hydrocarbons(oceans)
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Energy TermsNatural Gas-Source of energy from swamps, marshes and landfills. Ancient to recent. Bondies Island
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Energy TermsNuclear Power Plants-Energy produced by splitting atoms and using the heat to make steam and spin turbines
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Energy TermsUnsure?!These energy sources have potential to be either renewable or non-renewable
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HomeworkHydrogen-Energy stored in the attractive bonds of Hydrogen gas. H2 want to be in a water state.
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Energy TermsNissan Leaf Commercial
http://www.youtube.com/watch?v=BNeEVkhTutY
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Energy TermConservation of energy-Law- Energy can neither be destroyed or created. All energy must be accounted for
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Energy TermsTemperature-Average kinetic energy KE of the individual particle
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Thermal EnergyTotal amount of Kinetic Energy from Particles. As Kinetic Energy of particles increases, so does the Thermal energy.(Heat Energy) The particles move faster.
A
B
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Energy TransferHeat-Movement of Thermal energy from a substance at a higher temperature to another at a lower temperature
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Energy TransferConduction-Transfer of Thermal Energy, without particles moving. Transfer by touching, Direct Contact
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Transfer of EnergyConvection-The transfer of energy by movement of Fluids. Earths mantle as well as water in a pot on the stove.
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Energy TransferRadiation-
Transfer of energy by or through EM Waves (Electromagnetic). Sun’s rays, hot lamps, tanning salon.
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Transfer of EnergyAll three in action!Camp Fire!Lava Lamp!
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All 5 Phases/StatesSolid, Liquid, Gas,
Plasma, Bose Einstein
All Based upon the Amount of KE
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All 5 Phases
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Phase Changes
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Temperature ConversionsAbsolute Water Water Zero
Freezes Boils
F -460 32 212
C –273 0 100
K 0 273 373
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Bell Work #1How would you
Describe a Solid? Packed together tightly in relatively fixed positions. Can Vibrate!
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Bell Work #2How would you Describe a Gas?
Moving so fast that they do not stay close to one another. Expand to fill space!
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Bell Work #3How would you
Describe a Liquid? Particles held together, but not so tightly that they can’t move past one another. No Shape, but Volume!
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Energy Terms Insulator-
Nature of material and it’s particles is resistant to absorbing Kinetic Energy
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Energy TermsConductor-
Nature of material and it’s particles transfers Kinetic Energy Easily!