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


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]


The website

WJEC website

http://www.wjec.co.uk/index.php?subject=101&level=21

Tinopolis

http://www.appliedscience.org.uk/


Tinopolis – Website www.appliedscience.org.uk


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


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


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.


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


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.


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


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


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


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?


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?


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


Investigation Title

SMARTAim(s):

Scope:

Purpose:

Context:

Applicability to context:

SP:

Apparatus:

Accuracy & Repeatability?


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.


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


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/


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)


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)


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!


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)


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

wednesday, 24 june 2015gce applied science jeremy pollardunit 3unit 4unit 7 asc 3 energy & the...

Documents

applied energy slide

science unit

title of unit unit

renewable energy report

science a2 unit

environment portfolio

community report

energy related