Revision Tutorial Integrated Science 2B: Water Report Writing Task Exam Hints Report Writing Task...
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Revision Tutorial Revision Tutorial Integrated Science 2B: Integrated Science 2B:
WaterWater
Revision Tutorial Revision Tutorial Integrated Science 2B: Integrated Science 2B:
WaterWaterReport Writing Task
Exam Hints
Report Writing Task Exam Hints
Report writingReport writingReport Essay
Presents information Presents an argument
Table of contents and numbered pages
No contents page
Uses numbered headings and subheadings
Minimal subheadings if any
Uses short concise paragraphs and dot points where applicable
Links ideas into cohesive paragraphs, rather than breaking down into dot points
Graphics used (illustrations, tables, graphs)
No illustrations
References required References required
Report FormatReport Format
Title Page Contents Report information
Headings and subheadings Graphics titled Dot points where relevant
Bibliography
Title Page Contents Report information
Headings and subheadings Graphics titled Dot points where relevant
Bibliography
MarksMarks
Use note taking sheets with headings drawn from the task sheet
Check the marking guide Complete all aspects Use the report format described Add titles to graphics Reference correctly at least 2 more
sources; 1 online and 1 using text/book Hand in notes, report, bibliography
Use note taking sheets with headings drawn from the task sheet
Check the marking guide Complete all aspects Use the report format described Add titles to graphics Reference correctly at least 2 more
sources; 1 online and 1 using text/book Hand in notes, report, bibliography
Exam hintsExam hints
Semester 2 only - Water topic
water importance & properties aquatic ecosystems water resources & sustainability experimental design
Semester 2 only - Water topic
water importance & properties aquatic ecosystems water resources & sustainability experimental design
Exam formatExam format
2 Hour paper Multiple choice Short Answer (6 questions) Extended Answer (2 parts with an
environmental problem and experimental design component)
2 Hour paper Multiple choice Short Answer (6 questions) Extended Answer (2 parts with an
environmental problem and experimental design component)
propertiesproperties
Covalent bonding Hydrogen bonding Polarity Soluble, insoluble,
immiscible Cohesive Adhesive Capillary action
Covalent bonding Hydrogen bonding Polarity Soluble, insoluble,
immiscible Cohesive Adhesive Capillary action
Surface tension Density Salinity
Surface tension Density Salinity
ecosystemsecosystems
Osmosis Hypertonic,
hypotonic, isotonic Osmoconformer
and osmoregulator Eutrophication Bioaccumulation Non biodegradable Biomass
Osmosis Hypertonic,
hypotonic, isotonic Osmoconformer
and osmoregulator Eutrophication Bioaccumulation Non biodegradable Biomass
Food pyramids and webs
Turbidity Photosynthesis Respiration Plankton Trophic
Food pyramids and webs
Turbidity Photosynthesis Respiration Plankton Trophic
water resources & treatment
water resources & treatment
Sedimentation Aeration Coagulation Flocculation alum Disinfection B.O.D Reverse osmosis
Sedimentation Aeration Coagulation Flocculation alum Disinfection B.O.D Reverse osmosis
Distillation Deionisation
Distillation Deionisation
Skills Graphing (LUST) Calculations solution concentrations Explaining scientific concepts
Skills Graphing (LUST) Calculations solution concentrations Explaining scientific concepts
Experimental designExperimental design
Independent Variable : manipulated variable being investigated. It is changed in the experimental setup
Dependent Variable : responds to the changes made to the independent variable
Controlled Variables : specify (quantitate) all variables being controlled to prevent an effect
Hypothesis : states how the dependent variable will change in response to the independent variable
Independent Variable : manipulated variable being investigated. It is changed in the experimental setup
Dependent Variable : responds to the changes made to the independent variable
Controlled Variables : specify (quantitate) all variables being controlled to prevent an effect
Hypothesis : states how the dependent variable will change in response to the independent variable
Design an experiment…Design an experiment…
Write a method which states specifically how to conduct the experiment.
The method describes what to change, what to measure and record for results and how to control all other variables.
You will not get sufficient marks if you just list the different types of variables. This is a planning tool for you to write the method.
Write a method which states specifically how to conduct the experiment.
The method describes what to change, what to measure and record for results and how to control all other variables.
You will not get sufficient marks if you just list the different types of variables. This is a planning tool for you to write the method.
EXAMPLEEXAMPLE
Design an experiment to investigate if diameter affects capillary action…
Design an experiment to investigate if diameter affects capillary action…
methodmethod
1. Add 1cm of coloured water at room temperature to a petri dish.
2. Hold a hollow glass tube with a 1mm diameter in the water and measure the maximum height the water level reaches inside the tube. Record the measurement.
3. Conduct 2 more trials with the 1mm tube4. Repeat the steps 2 and 3 with tubes of
diameter 2mm and 5mm.
1. Add 1cm of coloured water at room temperature to a petri dish.
2. Hold a hollow glass tube with a 1mm diameter in the water and measure the maximum height the water level reaches inside the tube. Record the measurement.
3. Conduct 2 more trials with the 1mm tube4. Repeat the steps 2 and 3 with tubes of
diameter 2mm and 5mm.
expected resultsexpected results
Height of the water inside the tube decreases as the tube gets larger
Height of the water inside the tube decreases as the tube gets larger
Tube diameter Maximum height of water (mm)
Trial 1 Trial 2 Trial 3 Average
1mm
2mm
5mm
EutrophicationEutrophication
Excess nutrients (phosphates and nitrates)
Sources Fertilisers in runoff Detergents Sewage Organic matter
Promote plant growth, especially algae Increased population of algae
Excess nutrients (phosphates and nitrates)
Sources Fertilisers in runoff Detergents Sewage Organic matter
Promote plant growth, especially algae Increased population of algae
……
Large numbers of dead algae Dead organisms are broken down
by bacteria Increase in bacterial population -
excess food source Bacteria need to respire, therefore
require oxygen
Large numbers of dead algae Dead organisms are broken down
by bacteria Increase in bacterial population -
excess food source Bacteria need to respire, therefore
require oxygen
……
Lots of bacteria, lots of respiration, lots of oxygen used, oxygen obtained from the water
Decrease in dissolved oxygen content of water
Fish kills due to chocking of waterway (chocking = removal of oxygen)
Lots of bacteria, lots of respiration, lots of oxygen used, oxygen obtained from the water
Decrease in dissolved oxygen content of water
Fish kills due to chocking of waterway (chocking = removal of oxygen)
What causes the reduction in dissolved oxygen in eutrophication?
What causes the reduction in dissolved oxygen in eutrophication?
BioaccumulationBioaccumulation
Higher trophic levels can accumulate heavy metals, insecticides and pesticides … why does this occur?
Higher trophic levels can accumulate heavy metals, insecticides and pesticides … why does this occur?
……
Compounds are not biodegradable They do not breakdown but are
retained in the organisms body Higher trophic level organisms
consume many of the organisms below them
In doing so they retain all of the non-biodegradable material within that organism and it builds up
Compounds are not biodegradable They do not breakdown but are
retained in the organisms body Higher trophic level organisms
consume many of the organisms below them
In doing so they retain all of the non-biodegradable material within that organism and it builds up
Exam PreparationExam Preparation
Review syllabus (unit handout) Review classwork and seek
additional information (internet) Write study notes, prepare
summaries, concept maps, flash cards
Memorize relevant material Practice questions
Review syllabus (unit handout) Review classwork and seek
additional information (internet) Write study notes, prepare
summaries, concept maps, flash cards
Memorize relevant material Practice questions