Assessment Cover Sheet
Student: Disha Rabari Teacher: Miss Fletcher Class: 9B
LUI Subject Details
Unit/Topic: Unit 1 & 2
Date Issued: Week 4 Draft Date: Week 6 Due Date: Week 8
You must adhere to the School Assessment Policy.
This cover sheet must be attached to your assessment tasks.
Conditions Common Curriculum Elements
Reaching a conclusion which is necessarily true provided a given set of assumptions is true
Using vocabulary appropriate to a context
Compiling results in a tabular form
600 – 800 words
Assessment Conditions Calculators Allowed
Assessed Dimensions Standard Awarded
Understanding Dimension Science Understanding Science as a Human Endeavour Skills Dimension Communicating Student Declaration
No part of this assessment has been copied from any other person’s work, except where due acknowledgement is made in the text.
If any of the above statement is found to be false it will be regarded as misconduct and will be subject to disciplinary action.
Late work will not be accepted without an approved extension from the relevant HOD. No extension to due dates will be granted on the due date. In Cases where students do not submit a response to an assessment instrument by the due date, judgement will be made using evidence available on or before the due date (i.e. Draft)
No grade can be awarded in cases of non-submission of an assessment instrument. These will be identified as Not Rated. Students must consult with the HOD. Non-submission must be accompanied by a Medical Certificate to be awarded a grade.
Student Signature: ___________________________ Date: __________
Year 9 Science standard elaborations
d A B C D E
The folio of student work has the following characteristics:
Skills Understanding dimension Science Understanding
(PART A) Integration of analysis, explanation and description of phenomena with science knowledge
Application of science knowledge to generate justified solutions in simple and complex situations Linking of analysis, explanation and description of phenomena with science knowledge
Application of science knowledge to generate informed solutions in simple situations, with progress towards some that are complex Analysis, explanation and description of phenomena
Application of science knowledge to generate solutions in simple situations
Partial explanations, description, identification, definition and recall of science knowledge
Application of science knowledge to generate partial solutions in simple situations
Recall of science facts
Science as a Human Endeavour
(PART B AND C) Description and explanation of how social and technological factors have influenced scientific developments
Justified prediction of how future applications of science and technology may affect peoples’ lives Informed description of social and technological factors that have influenced scientific developments
Informed prediction of how future applications of science and technology may affect peoples’ lives Description of social and technological factors that have influenced scientific developments
Prediction of how future applications of science and technology may affect people’s lives Identification of applications of science and its effects on peoples’ lives
Prediction of future applications of science and technology Statements about the use of science
(PART A, B AND C) Concise and coherent use of appropriate language and representations when communicating findings and ideas to specific audiences
Coherent use of appropriate language and representations when communicating findings and ideas to specific audiences Use of appropriate language and representations when communicating findings and ideas to specific audiences Use of everyday language and representations when communicating findings and ideas to audiences Fragmented use of language and representations
This assessment will assess your understanding of the topics studied in first term. You will have 4 weeks to complete the task. Your teacher will set deadlines for you to complete each section within that 4-week period.
Your Science Understanding will be assessed in Part A, Science as a Human Endeavour will be assessed from Part B and C, Communication will be assessed from all Parts.
Part A: You will be able to demonstrate your understanding of how heat moves by focussing on the features of energy efficient houses. In class you will have studied energy, conduction, convection, reflection, absorption and looked at energy efficient homes. Your teacher will use an interactive to help you identify energy efficient features of homes and then you will choose to focus on 3 specific strategies on your own. You may choose to use this interactive to help you to complete this task.
Part B: This is a research task where you have to answer some questions about how the materials have changed in fire-resistant clothing. You will need to do your own research to answer these questions although you may already have some knowledge about the materials or clothing.
Part C: This is also a research task but instead of answering some questions you will need to write a report. You will be comparing copper wire and optic fibre technology in the context of the NBN rollout. In this task we expect that you will think about how technology impacts on society.
Part A: Explaining Energy-Efficient Features
Select three features from the list below and explain how they work.
Position of windows
Colour of house exterior
Trees around house
House raised above ground
Shade for windows
Position of house
You should make use of some of the key words below.
For each feature you will need to provide a:
Definition: Give a one or two sentence definition of your feature.
Example: Draw a labelled diagram or describe an example of your feature in use.
Explanation: Explain how your feature is working the above example using the applicable keywords listed above.
**Be sure to use the following key words in your explanations
Energy (transfer and transformations)
Feature 1: Wall Insulation
Wall insulation are used to diminish heat through filling the walls with materials that prevent a house or building from getting heated.
Window insulation are designed to reduce heat flow through convection. Heat does not travel through air. For example, people wear several layers of clothing to keep their body warm this is due to the air being trapped between them. Wall insulation work in similar way. This is because, wall insulation is made up of wool-like material which insulates your house trapping hot air in between the walls and preventing it from coming inside the .house. Insulation materials include cellulose fibre, polystyrene and glass or rock wool. This creates an air matrix. This effectively retains heat in houses than empty walls.
Heat is transferred from houses by conduction through walls. Insulating wall insulation into the gaps between bricks in walls will reduce heat loss by conduction. The insulating material will circulate the air inside the walls which will reduce heat by convection. Heat will leave the house by radiation through the walls which are insulated.
Anon, 2018. The Science of Insulation Explained. Knauf Insulation. Available at: http://www.knaufinsulation.com.au/science-insulation-explained Accessed February 16, 2018
Zeven, 2012. Cavity Wall Insulation: Everything You Need To Know. Cavity Wall Insulation: Everything You Need To Know – Go Greena Blog. Available at: http://gogreena.co.uk/cavity-wall-insulation-everything-you-need-to-know/ Accessed February 16, 2018.
Anon, 2014. GCSE Bitesize: Reducing heat loss. BBC. Available at: http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/energy/heatrev3.shtml Accessed February 16, 2018.
Feature 2: Door Seals
Door seals are used to fill the gap between the door, side walls and floor preventing anything from passing through one side to the other.
Door seals are one of the best way to keep a house energy efficient. Door seals prevent air leaks and prevent heat transfer by preventing heat movement through convection. Convection streams are the way that warmth travels through fluids and gases. Door seals lessen the heat movement in the home since they stop the air particles moving from one side to the other.
Exploring Science Year 9
Ravencomau. (2018). Door Bottom Seals. Retrieved 19 February 2018, from http://www.raven.com.au/domino/raven/ravenweb.nsf/prod2-v/010
Feature 3: Ceiling Insulation
Ceiling insulation is material that is placed between the ceiling joints to reduce thermal conductivity.
Ceiling insulation keeps a house or building warmer in winter and cooler in summer. Ceiling insulation can save up to 45% on heating and cooling energy. The most common way for heat to escape from a home is through the ceiling. Insulation beneath the roof increases resistance to radiant heat. This may be useful in hot climates. Foil backed blankets are mainly used to reduce condensation in the roof space, reduce noise from metal roofing and provide a vapour barrier. They are sometimes used as thermal insulation, but it is better to have thicker ceiling insulation for thermal control. Sources:
Ecowhocom. (2018). Ceiling Insulation. Retrieved 19 February 2018, from https://www.ecowho.com/defn/c/ceiling+insulation/9e6cb
Higginsinsulationcomau. (2018). Ceiling Insulation. Retrieved 19 February 2018, from http://higginsinsulation.com.au/ceiling-insulation/
Mosher M. (2013). Insulation Installation. Retrieved 04 February 2018, from HYPERLINK “http://www.yourhome.gov.au/passive-design/insulation-installation” http://www.yourhome.gov.au/passive-design/insulation-installation Part B: The Scientific Development of Insulators
In 1820, Italian scientist Giovanni Aldini crafted fireproof clothing from asbestos. Why is asbestos no longer used for this purpose?
Asbestos refers to six natural fibrous mineral which can resist heat, fire and electricity. This encouraged the use of asbestos properties in commercial and industrial area. Asbestos is no longer used as it is made up of microscopic fibre which can easily be spread in the air and be inhaled. The particles cam sticks to the tissue in the lungs and other area in respiratory system which can lead to number of health problems. One of the main health problem asbestos has caused is a deadly cancer known as Mesothelioma. Mesothelioma is a type of cancer which develops in lungs, abdomen and heart. Investigate other materials used in modern fireproof clothing and compare their suitability to that of asbestos?
Peter has decided to learn how to play the drums, however, his mother is worried about the amount of noise he will make. Suggest and explain a way that Peter could soundproof the room so that it won’t bother the other people in his house.
Peter could soundproof his room many ways. In many cases, a completely soundproof drum room is not required, however, reducing the amount of sound from the practice room can also help. The amount of sound that is produced from a drum set or a band is usually measured in decibels also known as dB. It has been estimated that normally drummers generate 110-120dB when playing hard. However, if the drummer hits the drums softly it generates 10dB less. This will prevent other people living in the house from getting disturbed as they will only hear them playing half as loudly. However, it will affect his practice since he may need to play louder in some cases. The sound goes where the air goes. If the room is soundproof the air can’t get in or out. This will help Peter in a way so that it won’t bother the other people in his house and his neighbours. However, air-tightness room from the inside isn’t practical, so it is recommended to find major air leaks to the outside the room and seal them with caulk or tape. Peter could also apply an acoustic seal to the bottom of the door and other sealing areas. Another way to stop a loud music from escaping the room is to apply the sound-absorbing material to the walls. e.g. Absorption sheets. The absorption sheets attach to the walls and reduce sound levels up to 60 percent. This is because absorption sheets have NRC (Noise Reduction Coefficient) which is scalar representation which absorbs sound energy upon striking a particular surface. environmental friendly material. This could be done in a building soundproof room or to an existing room. The Absorption material minimizes the air leaks, which will help Peter as his practice room will function more like a soundproof drum room. This is highly recommended for Peter because even a heavy metal band practice won’t disturb the rest of the family and neighbours.
Part C: Comparing Copper Wire and Optic Fibre
The National Broadband Network (NBN) was originally designed as a national telecommunications infrastructure project to replace the existing copper cable telephony infrastructure that was approaching the end of its lifetime.
In class you will have discussed the advantages and disadvantages of copper wire and optic fibre used for internet access and other services. Use the Venn diagram on the next page to help you organise your ideas.
Your report should include the following sections and be between 200 and 300 words:
Predictions of the NBN
What positive impacts has the NBN had on people’s lives?
NBN offers many things other than just fast internet. Some of the positive impacts of NBN had on people’s lives are flexible working, online health consultation, education and connecting with others. The optical fibre is a wire like structure made of glass or high strength transparent plastic. The fibres are used in networking and telecommunication as a base from transmittance of data and voice signal. It acts as the traditional copper wire but with more capabilities under its belt (Nextgenadmin12, 2012). The new fibre-optic cables are better suited to the Australian environment, as data speeds aren’t affected by rain and extreme heat like some other networks (Optus.com, 2018). The cables are additionally lighter in weight contrasted with the metal cables and slenderer. This makes them more productive as they convey more information with minimal obstruction. The information passed on through them are passed on carefully. The strands are likewise free in work, in that they can convey distinctive appointed information in various filaments. This empowers office structures make their own correspondence arrange. The local and rural area network can connect through phone line and radio waves (Nextgenadmin12, 2012). These enables the firms conduct interactive features such as the video conferencing.
What negative impacts has it had?
NBN has many positive impacts however it has also impacted the society negatively. Even though fibre installation costs are dropping by as much as 60% a year, installing fibre optic cabling is still relatively higher than copper cables. This is because copper cable installation does not need like fibre cables. Optic fibre cables are made of glass, which means they are more fragile than electrical wires. In addition, glass can be affected by various chemicals including hydrogen gas, making them need more cares when installing underground. It is very difficult to install them as fibre cable is highly vulnerable to becoming cut or damaged during installation or construction activities. To ensure the quality of fibre optic transmission, some unique hardware is required. For instance, hardware such as OTDR is required and costly, optical test gear, for example, optical tests and power meter are required at most fibre endpoints to appropriately give testing of optical fibre. There are many wildlife damages to fibre optic cables. Numerous birds, for instance, discover the Kevlar strengthening material of fibre cable coats especially engaging as settling material, so they peck at the fibre cable coats to use bits of that material. Beavers and different rodents utilize presented fibre cable to hone their teeth and bugs, for example, ants want the plastic protecting in their eating routine, so they can frequently be discovered snacking at the fibre optic cabling. Sharks have likewise been known to harm fibre optic cabling by biting on it when laid submerged, particularly at the rehashing focuses. There is a plant called the Christmas tree plant that regards fibre optic cable as a tree root and wraps itself around the cable so firmly that the light driving forces going down the fibre are interfered with.
What faster connection might mean in education, health, communication, shopping, etc.
Faster connection in education, health, communication and shopping mean that people will be more advance since the technology has a great impact on everyday life. This might also mean that people will communicate less in person since they all have new and faster technology which means they will lack communication skills. Being connected the online world has impacted education since students have a lack focus and concentration in academics.
Does the evidence support optic fibre as a better alternative to copper cables?
The evidence supports optic fibre as a better alternative to copper cables. Fiber has various unmistakable points of interest over copper. It is less influenced by outside impedance, which means it can be laid nearer to existing cables than copper cabling can. It is likewise equipped for exchanging a lot of information over bigger data transmissions than copper, making it perfect for conditions where data must be exchanged rapidly, or over long separations. Fiber has been viewed as both costlier and harder to introduce than copper cabling. Both may have been valid previously, yet this distinction is winding up subtler at this point. The crude materials to make fiber-optic cables are significantly less demanding to acquire than copper and will remain so later. This is probably going to make fiber the less expensive choice not long from now. Fiber is currently considerably less demanding to introduce than it at any point was, with on location joining and terminations having been a reality for quite a while.
Optus.com. (2018). What is the difference between the copper and NBN Fibre network? Retrieved: 04 March 2018. From: https://www.optus.com.au/shop/broadband/nbn/nbn-articles/what-is-nbn-fibre
Nextgenadmin12. (2012). The Fibre Optic Innovation Impact to Society. Retrieved: 04 March 2018. From: https://nextgentechnologies12.wordpress.com/2012/04/11/hello-world/