Welcome to Science 71 April 29, 2014 Day 142. Period B Rules “ I promise to check the sink at the...

transcript

Welcome to Science 71

April 29, 2014Day 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 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)

AgendaToday’s Objective

Bell WorkNotesVocabulary Puzzle What is PE and KE?Discussion on Worksheets

Bell WorkLooking at the items below, which

ones are Potential Energies?

A. Apple

B. Fire

C. Wood

D. Book on Shelf

E. Student running in gym

Bell WorkLooking at the items below, which

ones are Kinetic Energies?

A. Battery

B. Unlit Candle

C. Turned on Light bulb

D. Car in park on steep hill

E. Cold Pizza

EnergyWhat is Energy?How do you define Energy?

Class Examples

EnergyEnergy

- The ability to do work

-Be it Potential or Kinetic

-Be it Mechanical, Thermal, Chemical, Electrical, Electromagnetic, Nuclear

EnergyBased upon Two Primary Categories:

Potential Kinetic

EnergyKinetic

Energy of UseEnergy of MotionEnergy of NOW!

EnergyEureka #9 ClipKinetic Energy

EnergyPotential

Energy that is Stored.It is Potential

EnergyEureka #10 ClipPotential Energy

Bell WorkAt what point does

the diver have the most energy?

A. 1B. 2C. 3D. 4E. Not Sure

EnergyConservation of Energy.Energy is Neither Created or Destroyed

All Energy Must be Accounted For!

It can only change form

Energy

EnergySecondary Categories:

MechanicalThermalChemicalElectricalElectromagneticNuclear

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

Thermal-Total KE of all particles in an object

-Ice Cream

Chemical-Energy Stored in chemical bonds

-Candles

Electrical-Moving electrical charges (electrons)

-Power to run E Devices

Electromagnetic Energy (Radiation)

-Energy travels in Waves

-UV, IR, Microwaves

Nuclear Energy-Stored in Nucleus of Atom

-Fission vs. Fusion-Sun, Stars, Powerplants

Bell WorkWhat type of Energy

does this object represent best?(1)

A. MechanicalB. ThermalC. ChemicalD. ElectricalE. ElectromagneticF. Nuclear

Bell WorkPlease put the items below into two

categories

(You choose the grouping)

Hydroelectric Oil Coal

Petroleum Biodiesel Gas

Wind Turbine Biomass Solar

Energy Terms

Renewable Energy

Energy sources that can be replaced, or replenished.

Energy Terms

Hydroelectric-

Electricity being made by hydro-water

Energy Terms

BiomassWood/Forests-Energy stored in trees in the carbon chemical bonds. Energy is old sunlight!

Extra-(maple syrup)

Energy Terms

Photovoltaic-

Electricity being made by converting Sunlight/Visible Light.

Solar Panels

Energy Terms

Tidal Turbine-

Energy production from the movement of ocean tides

Energy Terms

Wave Turbine-

Electricity produced by the movement of waves.

Energy Terms

Bio-fuels

Bioethanol

Biodiesel-

Fuel made from vegetables and grain

Energy Terms

Wind Turbine-

Electricity produced from the conversion of wind.

Energy Terms

Non-Renewable

Energy sources that once used, are non replaceable.

Energy Terms

Fossil FuelsAncient Stored SunlightCoal, Oil, Natural GasConsidered the Catalyst for Accelerated Global Warming (Climate Change)

Energy TermsCoal-

Energy Source made of preserved swamp ecosystems. Water/Mud preserved. Largest world-wide energy source for producing electricity

Energy Terms

Oil-Petroleum

Naturally occurring liquid found in Earth, comprised of ancient Zooplankton and Algae, hydrocarbons(oceans)

Energy Terms

Natural Gas

-Source of energy from swamps, marshes and landfills. Ancient to recent. Bondies Island

Energy Terms

Nuclear Power Plants

-Energy produced by splitting atoms and using the heat to make steam and spin turbines

Energy Terms

Unsure?!

These energy sources have potential to be either renewable or non-renewable

Homework

Hydrogen

-Energy stored in the attractive bonds of Hydrogen gas. H2 want to be in a water state.

Energy TermsNissan Leaf Commercial

http://www.youtube.com/watch?v=BNeEVkhTutY

Energy Term

Conservation of energy-

Law- Energy can neither be destroyed or created. All energy must be accounted for

Energy Terms

Temperature-Average kinetic energy KE of the individual particle

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.

Energy TransferHeat-Movement of Thermal energy from a substance at a higher temperature to another at a lower temperature

Energy Transfer

Conduction-Transfer of Thermal Energy, without particles moving. Transfer by touching, Direct Contact

Transfer of EnergyConvection-

The transfer of energy by movement of Fluids. Earths mantle as well as water in a pot on the stove.

Energy Transfer

Radiation-Transfer of energy by or through EM Waves (Electromagnetic). Sun’s rays, hot lamps, tanning salon.

Transfer of Energy

All three in action!

Camp Fire!

Lava Lamp!

All 5 Phases/StatesSolid, Liquid, Gas,

Plasma, Bose Einstein

All Based upon the Amount of KE

All 5 Phases

Phase Changes

Temperature ConversionsAbsolute Water Water Zero

Freezes Boils

F -460 32 212

C –273 0 100

K 0 273 373

Bell Work #1How would you

Describe a Solid? Packed together tightly in relatively fixed positions. Can Vibrate!

Bell Work #2How would you Describe a Gas?

Moving so fast that they do not stay close to one another. Expand to fill space!

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!

Energy Terms Insulator-

Nature of material and it’s particles is resistant to absorbing Kinetic Energy

Energy TermsConductor-

Nature of material and it’s particles transfers Kinetic Energy Easily!

Welcome to Science 71 April 29, 2014 Day 142. Period B Rules “ I promise to check the sink at the...

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