Unit 3: Energy & the Environment 3.2

advertisement
Jeremy Pollard
Unit 3 Unit 4 Unit 7
ASC 3 Energy & the Environment
ASC 4 Applied Scientific
Investigation
ASC 7 Applied Energy
GCE Applied Science
Friday, 11 March 2016
Team talk
Brian Harris – WJEC Subject Officer
brian.harris@wjec.co.uk
Bernie Norbury – Unit 8 & 9
b-norbury@wolgarston.staffs.sch.uk
Sarah Eagle – Unit 2 & 5
saraheryr@hotmail.com
Rick Littlejohn – Unit 1 & 6
riclittlejohn@yahoo.co.uk
Jeremy Pollard – Unit 3, 4 & 7
drjdpollard@hotmail.com
GCE Applied Science
Friday, 11 March 2016
The website
WJEC website
http://www.wjec.co.uk/index.php?subject=101&level=21
Tinopolis
http://www.appliedscience.org.uk/
GCE Applied Science
Friday, 11 March 2016
Tinopolis – Website www.appliedscience.org.uk
GCE Applied Science
Friday, 11 March 2016
AS
Unit
No
1
2
3
Title of
Unit
(All
mandatory
At AS level)
Health
Science
Analysis
Energy & the
Environment
GCE Applied Science
Mode of
assessment
External
Portfolio
Portfolio
Features
Human circulatory & respiratory systems
Physiological Measurements
Medical Ethics & Medical Imaging
Written Exam Paper (Pre-release material) with
Emphasis on Data Handling
Taking & preparing samples & Quantitative &
Qualitative analysis
Chromatography & colorimetry
Analytical scientific organisations
Group/Team presentation & Written reports
Energy from carbon-based (fossil) fuels & Energy
and the community
Report on experiment to measure calorific value
of fuel
Report on domestic hot water & Energy-related
organisations
Friday, 11 March 2016
A2
Unit
No
Title of
Unit
(Unit 4
mandatory;
choose 2
options)
Mode
Of
assessment
4
Applied
Scientific
Investigation
Scientific Investigation in Applied Context
External External Assessment – Set List of Titles; marked
(Mandatory) externally by WJEC; controlled conditions
Features
5
Applied
Forensics
Portfolio
(Option)
Identification of chemicals (organic & inorganic) in the
context of Criminal and/or Archaeological Forensic Science
Forensic Science (Criminal and/or Archaeological) Case
Study (as shown on TV) REPORTS
6
Applied
Biology
Portfolio
(Option)
Animal Care Project REPORT
Plant Propagation OR Composting Project REPORT
Analysis of commercial Animal/Plant/Composting business
7
Applied
Energy
Portfolio
(Option)
8
Applied
Scientific
Communication
Portfolio
(Option)
Working in
9
Applied
GCE Applied
Science
Science
Portfolio
(Option)
Report on experiment to generate Renewable Energy
Report on project to reduce energy consumption
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
Report based on Work experience in scientific context.
Research report of placement; Scientific tasks: Evaluation;
Analysis of work-based scientific task
Friday, 11 March 2016
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.
GCE Applied Science
Friday, 11 March 2016
Unit 3 – Energy & the Environment
(NEW IMPROVED) Checklist
Effect of using a copper calorimeter
Report B Specification Content needed
The Zeroth Law
Power Station Thermal Physics
World Energy Statistical Analysis and here
http://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
GCE Applied Science
Friday, 11 March 2016
Heat energy from the burning fuel heats up the water
AND the calorimeter
Water
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
From
Fuel
=
Energy
heating
up water
+
Energy
heating
up copper
calorimeter
Heat energy lost
to heat up copper
calorimeter
EFuel = (mw.cw.T) + (mc.cc.T)
Implications:
Calculation is more complex.
Mass of calorimeter needs to be recorded.
GCE Applied Science
Friday, 11 March 2016
1. Conduction
2. Convection
3. Radiation
4. (Evaporation)
T1
T1
T3
T3
T2
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
Conduction – vibration of
particles (best in solids)
Metals v. good conductors
because they have ‘free electrons’
that quickly transfer ‘vibration’
CONVECTION CURRENT
IR Radiation
HOT
Radiator
COLD
Room
Conduction
through metal
GCE Applied Science
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
Friday, 11 March 2016
Super heated steam
Kinetic energy
ET = 3/2kT = Ek
Ek = ½ mv2
Super heated steam,
turning Turbine
Water turning to steam
(vapourising)
Latent Heat of
Vapourisation, lw
Steam turning to water
(condensing)
Latent Heat of
Vapourisation /
Condensation, lw
Water being heated
(Energy in)
Specific Heat Capacity
cw
Combustion
Breaking/Making Bonds
Hc
GCE Applied Science
Cooling steam
Cooling water
(Energy out)
Specific Heat Capacity
cw
Friday, 11 March 2016
Analysing
energy
statistics
GCE Applied Science
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
Friday, 11 March 2016
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
World Energy Statistics 2009, (ABOVE)
UK Energy Statistics 2009, (BELOW)
GCE Applied Science
http://earthtrends.wri.org/datatables/index.php?theme=6
Trends /. Patterns ?
Similarities / Differences ?
Implications for Society?
What do YOU think about these?
Friday, 11 March 2016
How long will it last?
Region
Proved Fossil fuel reserves (million
metric tonnes of oil equivalent)
2003
Average annual
production (million
metric toe)
Oil
Coal
Gas
Oil
Coal
Gas
World
156700
501172
158198
3615
2369
2292
UK
595
833
567
113
18
94
GCE Applied Science
How many years
before it runs
out?
Coal
Oil
Gas
Friday, 11 March 2016
Unit 4 – Applied Scientific Investigation
Set Tasks
Examples  Planning
Controlled conditions in practice
Management – 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 Phase
COMPLEX CALCULATIONS
Markscheme
Writing frame
Planning Phase (followed by Plan write-up – controlled exam
conditions) USE EXAMINATION PAPER
Doing Phase  Analysing Phase
Writing-up Phase (controlled exams conditions) USE
EXAMINATION PAPER
Summer Submission only
GCE Applied Science
Friday, 11 March 2016
Aim(s):
SMART
Scope:
Purpose:
Investigation
Title
SP:
Context:
Applicability to context:
Apparatus:
Accuracy & Repeatability?
GCE Applied Science
Friday, 11 March 2016
Complex Calculations
Straightforward calculations
Generally 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 calculations
Generally 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.
GCE Applied Science
Friday, 11 March 2016
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
GCE Applied Science
Friday, 11 March 2016
Unit 7 – Applied Energy
Publisher: OUP Oxford; 2 edition
(11 Mar 2004)
Download from:
http://www.withouthotair.com/
ISBN-10: 0199261784
ISBN-13: 978-0199261789
£28.79 (Amazon)
GCE Applied Science
Friday, 11 March 2016
Report A: Renewable energy
•Relationship to Sun / Moon (inc. Diagram)
• Hydroelectric
• Wind
• Active
solar
• Tidal
• Geothermal
• Wave
• Biofuel
•Generation principles (Energy flow)
•Examples – Local(?), National / International –
Details - Photos / Maps / Diagrams
•Basic economics of renewable:
Initial capital costs
Ongoing costs
Efficiency
Price (cost of energy)
Payback times
Existing and potential contribution to
national and international electrical energy
generation
Local environmental and social impacts
•APPROX 3 or 4 sides A4 each (inc. graphics)
GCE Applied Science
Friday, 11 March 2016
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)
GCE Applied Science
Friday, 11 March 2016
Report B: Global Warming
• Alternative Theories:
– Standard human activity-linked carbondioxide Greenhouse Effect Model
– Solar Activity
– Long-term planetary movements
(Milankovitch cycles)
– Volcanism
– Denial!
GCE Applied Science
Friday, 11 March 2016
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)
GCE Applied Science
Friday, 11 March 2016
http://www.rec.hu/sieuweb/
Clare Langdon
Senior Project Officer
Tel: 01209 614973
Email: clare@cep.org.uk
Website: www.cep.org.uk
Community Energy Plus
Promoting Energy Efficiency and Renewable Energy; Fighting Fuel
Poverty
GCE Applied Science
Friday, 11 March 2016
Download