Wednesday, 24 June 2015GCE Applied Science Jeremy PollardUnit 3Unit 4Unit 7 ASC 3 Energy & the...
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Transcript of Wednesday, 24 June 2015GCE Applied Science Jeremy PollardUnit 3Unit 4Unit 7 ASC 3 Energy & the...
Tuesday, April 18, 2023GCE Applied Science
Jeremy Pollard Unit 3 Unit 4 Unit 7
ASC 3 Energy & the Environment
ASC 4 Applied Scientific Investigation
ASC 7 Applied Energy
Tuesday, April 18, 2023GCE Applied Science
Team talk
Brian Harris – WJEC Subject Officer [email protected]
Bernie Norbury – Unit 8 & 9 [email protected]
Sarah Eagle – Unit 2 & 5 [email protected]
Rick Littlejohn – Unit 1 & 6 [email protected]
Jeremy Pollard – Unit 3, 4 & 7 [email protected]
Tuesday, April 18, 2023GCE Applied Science
The website
WJEC website
http://www.wjec.co.uk/index.php?subject=101&level=21
Tinopolis
http://www.appliedscience.org.uk/
Tuesday, April 18, 2023GCE Applied Science
Tinopolis – Website www.appliedscience.org.uk
Tuesday, April 18, 2023GCE Applied Science
ASUnitNo
Title of Unit (All
mandatoryAt AS level)
Mode ofassessment
Features
1 Health
Science External
Human circulatory & respiratory systemsPhysiological MeasurementsMedical Ethics & Medical ImagingWritten Exam Paper (Pre-release material) with Emphasis on Data Handling
2 Analysis Portfolio
Taking & preparing samples & Quantitative & Qualitative analysisChromatography & colorimetryAnalytical scientific organisationsGroup/Team presentation & Written reports
3 Energy & theEnvironment
Portfolio
Energy from carbon-based (fossil) fuels & Energy and the communityReport on experiment to measure calorific value of fuelReport on domestic hot water & Energy-related organisations
Tuesday, April 18, 2023GCE Applied Science
A2UnitNo
Title of Unit
(Unit 4 mandatory; choose 2 options)
ModeOf
assessmentFeatures
4 Applied
ScientificInvestigation
External(Mandatory)
Scientific Investigation in Applied ContextExternal Assessment – Set List of Titles; marked externally by WJEC; controlled conditions
5 Applied
ForensicsPortfolio(Option)
Identification of chemicals (organic & inorganic) in the context of Criminal and/or Archaeological Forensic ScienceForensic Science (Criminal and/or Archaeological) Case Study (as shown on TV) REPORTS
6 AppliedBiology
Portfolio(Option)
Animal Care Project REPORTPlant Propagation OR Composting Project REPORTAnalysis of commercial Animal/Plant/Composting business
7 Applied Energy
Portfolio(Option)
Report on experiment to generate Renewable EnergyReport on project to reduce energy consumption
8 Applied
Scientific Communication
Portfolio(Option)
4 articles on two different issues: The Environment and Application of Science; 2 written for Youth Audience; 2 written for Popular Scientific Magazine (New Scientist)Market Research and analysis of articles REPORT
9 Working in
Applied Science
Portfolio(Option)
Report based on Work experience in scientific context.Research report of placement; Scientific tasks: Evaluation; Analysis of work-based scientific task
Tuesday, April 18, 2023GCE Applied Science
Unit 3 – Energy & the Environment
Requirements:
(a) A report on a practical procedure to measure the calorific value of a carbon-based (fossil) fuel,
(b) A report on the application of domestic energy and the community, including the formation, extraction and use of a fossil fuel in the context of a domestic hot water heating system report and the impact of two (2) energy related organisations involved with this process:
• one organisation involved with energy production or distribution from carbon-based (fossil) fuels,
AND
• the second organisation involved with the application of domestic hot water systems.
Tuesday, April 18, 2023GCE Applied Science
Unit 3 – Energy & the Environment
(NEW IMPROVED) Checklist
Effect of using a copper calorimeterReport B Specification Content neededThe Zeroth Law
Power Station Thermal PhysicsWorld Energy Statistical Analysis and herehttp://www.theglobaleducationproject.org/earth/energy-supply.php
The Markscheme Explained
Please check out Examiners Reports and Exemplar Student Portfolios on Website
‘Online’ Exemplar Portfolio Training
Tuesday, April 18, 2023GCE Applied Science
Water
Heat energy lost to heat up copper calorimeter
Heat energy from the burning fuel heats up the water AND the calorimeter
Assume the temperature change of the water is the same as the temperature change of the copper calorimeter.
Assuming no other heat loss (approx.) then:
Energy = Energy + EnergyFrom heating heatingFuel up water up copper
calorimeter
EFuel = (mw.cw.T) + (mc.cc.T)
Implications:
Calculation is more complex.
Mass of calorimeter needs to be recorded.
Tuesday, April 18, 2023GCE Applied Science
If T1=T2 AND T3=T2
Then NO heat is transferred from 1 to 2
So… if T1>T2, HEAT will FLOW from HOT to COLD
T1 T3 T3
T1
T2
1. Conduction2. Convection3. Radiation4. (Evaporation)
Conduction – vibration of particles (best in solids)
Metals v. good conductors because they have ‘free electrons’ that quickly transfer ‘vibration’
Convection - Warmer particles Higher Temperature Move faster Get further apart Increase volume Less dense Rise Float over colder, more dense, sinking particles
Radiation – Infra-red em waves emitted by hot objects. HOTTER = Higher energy = shorter wavelength
HOTRadiator
COLDRoom
CONVECTION CURRENT
Conduction through metal
IR Radiation
Tuesday, April 18, 2023GCE Applied Science
CombustionBreaking/Making Bonds
Hc
Water being heated (Energy in)
Specific Heat Capacitycw
Water turning to steam (vapourising)Latent Heat of
Vapourisation, lw
Super heated steamKinetic energyET = 3/2kT = Ek
Ek = ½ mv2
Super heated steam, turning Turbine
Cooling steam
Steam turning to water (condensing)Latent Heat of Vapourisation /
Condensation, lw
Cooling water(Energy out)
Specific Heat Capacitycw
Tuesday, April 18, 2023GCE Applied Science
Analysing energy statistics
http://www.iea.org/publications/free_new_Desc.asp?PUBS_ID=1199
http://www.decc.gov.uk/en/content/cms/statistics/publications/dukes/dukes.aspx
http://earthtrends.wri.org/datatables/index.php?theme=6
Tuesday, April 18, 2023GCE Applied Science
Analysing energy statistics
http://www.iea.org/publications/free_new_Desc.asp?PUBS_ID=1199
http://www.decc.gov.uk/en/content/cms/statistics/publications/dukes/dukes.aspx
http://earthtrends.wri.org/datatables/index.php?theme=6
World Energy Statistics 2009, (ABOVE)
UK Energy Statistics 2009, (BELOW)
Trends /. Patterns ?Similarities / Differences ?Implications for Society?What do YOU think about these?
Tuesday, April 18, 2023GCE Applied Science
Region
Proved Fossil fuel reserves (million metric tonnes of oil equivalent)
2003
Average annual production (million
metric toe)
How many years before it runs
out?
Oil Coal Gas Oil Coal Gas Coal Oil Gas
World 156700 501172 158198 3615 2369 2292
UK 595 833 567 113 18 94
How long will it last?
Tuesday, April 18, 2023GCE Applied Science
Unit 4 – Applied Scientific Investigation
Set TasksExamples PlanningControlled conditions in practiceManagement – all candidates do different tasks; trays; folders (in central tray?); 2 hour experimental slots (access out of lesson times); do as a block 4/5 hours per week for 10/12 weeks; high technician support during Doing PhaseCOMPLEX CALCULATIONSMarkschemeWriting framePlanning Phase (followed by Plan write-up – controlled exam conditions) USE EXAMINATION PAPERDoing Phase Analysing PhaseWriting-up Phase (controlled exams conditions) USE EXAMINATION PAPER Summer Submission only
Tuesday, April 18, 2023GCE Applied Science
Investigation Title
SMARTAim(s):
Scope:
Purpose:
Context:
Applicability to context:
SP:
Apparatus:
Accuracy & Repeatability?
Tuesday, April 18, 2023GCE Applied Science
Complex CalculationsStraightforward calculationsGenerally these have one or two steps, for example:• percentages;• mean;• mode;• median• range;• calculations involving 1:1 ratios (volumetric analysis);• simple substitution into straightforward equations without rearrangement, e.g. P = VI to
find P ;• gradients of straight-line graphs.
Complex calculationsGenerally these have two or more steps, for example:• percentage changes;• calculations involving ratios more complex than 1:1 ratios, e.g. 1:2, 2:5;• any statistical analysis, e.g. chi-squared or t-test, calculation of standard deviation;• substitution into equations with rearrangement or use of powers or standard form• use of equations involving exponentials or logarithms• gradients of curves (tangents)• use of gradients and intercepts to find the equation of a line in the form y=mx+c.
Tuesday, April 18, 2023GCE Applied Science
Unit 7 – Applied Energy
(a) A report on a feasibility study of the possible use of the different forms of renewable energy in a domestic, commercial or educational setting AND a practical procedure to generate electricity using a renewable energy source.
(b) A report on the effects of Global Warming and a feasibility study of the different ways to reduce energy consumption in a domestic, commercial or educational setting AND a practical project to reduce energy consumption.
Assessment Criteria
Tuesday, April 18, 2023GCE Applied Science
Unit 7 – Applied Energy
Publisher: OUP Oxford; 2 edition (11 Mar 2004)
ISBN-10: 0199261784
ISBN-13: 978-0199261789
£28.79 (Amazon)
Download from:
http://www.withouthotair.com/
Tuesday, April 18, 2023GCE Applied Science
Report A: Renewable energy
• Hydro-electric
• Wind • Active
solar • Tidal • Geo-
thermal • Wave • Biofuel
•Relationship to Sun / Moon (inc. Diagram)
•Generation principles (Energy flow)
•Examples – Local(?), National / International – Details - Photos / Maps / Diagrams
•Basic economics of renewable:Initial capital costsOngoing costsEfficiency Price (cost of energy) Payback times Existing and potential contribution tonational and international electrical energy generation Local environmental and social impacts
•APPROX 3 or 4 sides A4 each (inc. graphics)
Tuesday, April 18, 2023GCE Applied Science
Report A: Renewable energy• carry out an audit of a domestic, commercial or educational setting
to determine the feasibility of using the different forms of renewable energy to generate electricity at the setting (+ Map / Diagrams / Data e.g. sunshine / wind info)
• plan an experiment to generate some electricity from a renewable energy source, including a RISK ASSESSMENT
• carry out a safe experiment to generate some electricity from a renewable energy source
• measure and record relevant and precise data to enable you to analyse and calculate the electrical power and efficiency of an experiment to generate some electricity from a renewable energy source
• evaluate the effectiveness of your experiment to generate electricity from a renewable energy source (Method / Data / Improvements)
• produce a written report about your experiment to generate electricity from a renewable energy source (inc. Graphs / Diagrams / Charts)
Tuesday, April 18, 2023GCE Applied Science
Report B: Global Warming
• Alternative Theories:– Standard human activity-linked carbon-
dioxide Greenhouse Effect Model– Solar Activity– Long-term planetary movements
(Milankovitch cycles) – Volcanism– Denial!
Tuesday, April 18, 2023GCE Applied Science
Report B: Global Warming• Greenhouse Effect Model:
– (Own) Labelled diagram (not copy/paste)– Own words text explanation– Link to human activity– Consequences– Data
• ‘Hockey stick’ graph• Geological time graph• CO2 levels v global warming data
• Political initiatives to reduce GW (example)• Technological initiatives to reduce GW (example)
Tuesday, April 18, 2023GCE Applied Science
http://www.rec.hu/sieuweb/
Clare Langdon
Senior Project Officer
Tel: 01209 614973
Email: [email protected]
Website: www.cep.org.uk
Community Energy Plus
Promoting Energy Efficiency and Renewable Energy; Fighting Fuel Poverty