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Year 12 HSC Physics Assessment Task 4:
Astrophysics Research, Oral Presentation & Summary

Aim

Working individually, you are to identify data sources, gather, process and
present information from secondary sources on a specified type of stellar
object or stage in a star's life, discuss some of its properties and
characteristics and explain how it fits into the model of stellar
evolution. You must identify and discuss current or recent observations of
the object and their implications. Your findings will be presented in the
form of a short illustrated talk to the class and a two-page summary for
distribution.

This task comprises 17% of your HSC assessment.

Outcomes assessed in this task:

A student

HI evaluates how major advances in scientific understanding and
technology have changed the direction or nature of scientific thinking
H4 assesses the impacts of applications of physics on society and the
environment
H5 identifies possible future directions of research in physics
H13 uses reporting styles and terminology appropriately and successfully to
communicate information and understanding
H15 explains why an investigation is best undertaken individually or by a
team

Syllabus points covered:

You will address the following specific dot points but feel free to cover
any others in the option as required:

. Describe the processes involved in stellar formation

. Outline the key stages in star's life in terms of the physical
processes involved

. Describe the types of nuclear reactions involved in Main-Sequence and
post Main Sequence stars

. Discuss the synthesis of elements in stars by fusion

. Identify data sources, gather, process and present information to
assess the impact of improvements in measurement technologies on our
understanding of the celestial objects

. Explain the concept of star death in relation to:

- planetary nebula

- supernovae

- white dwarfs

- neutron stars/pulsars

- black holes

These will be discussed with respect to a specific stage in stellar
evolution. In doing so, then, you will also explore one or more celestial
objects in some depth.


Research
. Two periods will be allocated for you to spend in the Library. During
these periods you are to identify data sources, gather and process
information on your selected stellar object.
. You are to locate information about the state of current research on
your stellar object. You are required to access information from at
least three different sources such as popular scientific journals, CD
ROMs, newspaper articles, books and the Internet and include full
details in a bibliography in the correct format.


Stellar Objects
One of the following stellar objects will be selected randomly in class and
assigned to you:
1. Pre-Main Sequence stars (including T Tauri types)
2. Main Sequence stars
3. Red Giants/Supergiants
4. Planetary nebulae/white dwarfs
5. Supernovae
6. Neutron stars/pulsars
7. Stellar mass black holes


Preparation of the Presentation


A. Oral presentation

The first part of your presentation will be a ten minute (( 2 minutes)
illustrated talk to the class about your designated class of object. In it,
you must;

1. Provide a description of the class of stellar object, its, size and
physical properties and where this type of object is typically located.

2. Explain where the class fits into the model of stellar evolution.

3. Describe the physical processes that provide the energy in the object.

4. Discuss which wavebands it is observed at and why, with respect to the
information obtained at different wavebands.

5. Discuss at least two recent observations (ie within the last five years)
made by astronomers from two separate teams or institutions. Outline how
they made their observations, what they found and how their findings
helped develop the model of stellar evolution. You should make specific
mention of the value or otherwise of any collaborations between
individual astronomers or groups in planning and conducting observations.

6. Evaluate how discoveries about this type of object have contributed to
the development of scientific knowledge and what, if any has been the
impact on society.

7. Outline any outstanding questions still to be answered about the type of
object and what observations are planned for the future.

Your talk must be supported by use of relevant diagrams or illustrations.
These can be on overhead transparencies, Power Point presentation, slides,
charts, and drawings on the board or books using a document camera.

Basic resources for illustrations will be provided but you will have to
plan ahead and use the two allocated periods wisely. If you require any
special equipment or needs, notify me early on so plans can be made.




B Summary for distribution

In addition to your talk you must submit a two-page (A4) summary of your
research. This must be suitable for distribution to your peers and should
act as a useful set of notes when combined with the others. These summaries
will be copied and distributed. Use relevant diagrams to supplement your
notes.


C Bibliography

You are to submit a complete bibliography of all sources used. The
bibliography is to be annotated; that is, it should contain a brief outline
of each source, its intended audience, value, currency and relevance.

The bibliography is in addition to your two-page summary (ie does count in
the two A4 pages).



Date for Talks






This set of marking sheets must be submitted at the time of your talk.


Oral Presentation Marking Sheet

Name/Number: _______________________________ Topic:
_____________________________


Structure: Introduction: 0 _____________ 1

Conclusion: 0 _____________ 1
Use of Notes:
0____________ 1 ___________ 2 _____________3
consistent
frequently spoke
reading
without notes
Delivery:
0 ____________ 1 ____________ 2
no eye
regular eye
contact
contact

0 _____________ 1 ____________ 2
lack of
good vocal
expression
intonation

Language:
0 _____________ 1 ____________ 2

appropriate scientific

language used
Support Media:

0 _____________ 1 ____________ 2
no support
good support
media
media provided


0 _____________ 1 ____________ 2
support media
effective use of
not well used
support media

Timing
0 __________ 1 Presentation
Total /16, divided by 2 = /8
allocated time
+ or - 2 minutes

Content of talk

1. Description/properties of object 0_______1_______2
2. Fit in model of stellar evolution 0_______1_______2
3. Physical processes/energy source 0_______1
4. Wavebands for observations 0_______1
5. Two recent observations
0_______1_______2________3________4
6. Contribution to scientific knowledge 0_______1_______2
7. Questions/future observations 0_______1_______2





Content Total / 14
Astrophysics Research, Summary & Bibliography MARKING SCHEME


|Summary for Distribution |6-8 | |
|A student will: | | |
|Extract relevant information from diagrams | | |
|and/or numerical data in graphs and tables | | |
|as well as from written text; | | |
|Synthesise and summarise information from | | |
|sources in a logical, concise, coherent and | | |
|organised manner; | | |
|Present an effective and useful summary of | | |
|the required length and format (two A4 | | |
|pages); | | |
|Utilise one or more relevant diagrams or | | |
|illustrations in the summary to aid in the | | |
|presentation of information; | | |
|Address the required content areas and | | |
|questions. | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | |Total/8 |
| | |__________|
|A student will: |3-5 | |
|Extract some relevant information from | | |
|numerical data in graphs or tables and from | | |
|written text; | | |
|Synthesise or summarises information from | | |
|sources such that the information has been | | |
|processed, not just reproduced; | | |
|Present a summary of the required length and| | |
|format; | | |
|Utilise one or more diagrams or | | |
|illustrations that relate to the telescope; | | |
|Address many of the required content areas | | |
|and questions. | | |
|A student will: |0-2 | |
|Extract some information from data in graphs| | |
|or tables and from written text; | | |
|Presents a summary that shows poor synthesis| | |
|of information. | | |
|Present a summary of between one to three A4| | |
|pages; | | |
|Use one or more diagrams or illustrations; | | |
|Address a few of the required content areas | | |
|and questions. | | |
|Bibliography |3-4 | |
|A student will: | | |
|Select at least three relevant sources from | | |
|which to collect information; | | |
|Construct a brief, accurate outline of each | | |
|information source which includes the main | | |
|points; | | |
|Correctly assess the accuracy of the | | |
|scientific information in each source; | | |
|Select and use an appropriate method to | | |
|acknowledge the sources of information; | | |
|Evaluate each information source for its | | |
|value, currency relevance and identify the | | |
|intended audience. | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | |Total/4 |
|A student will: |0-2 | |
|Select fewer than three relevant sources | | |
|from which to collect information; | | |
|Construct an outline of each information | | |
|source including some of the main points; | | |
|Attempts to discuss the accuracy of the | | |
|scientific information in each source; | | |
|Acknowledge the sources of information; | | |
|Describe some of the following aspects of | | |
|each source: the value, currency relevance | | |
|and identify the intended audience. | | |
| | | |
| | | |
| | |Total/12 |
| | | |

Additional marker's comments:
|Oral | |/8 |
|presentation | | |
|Content of | |/14 |
|talk | | |
|Summary | |/8 |
|Bibliography | |/4 |
| | | |
|TOTAL | |/34 |