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Celestial Wanderers: Difference between revisions
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|resourcenumber=SC0021 | |resourcenumber=SC0021 | ||
|age= Secondary, Year 10. | |age= Secondary, Year 10. | ||
|content= | |content=This third session looks at the geology of solar system and the fleet of robotic explorers that have provided much of the information we have. This is session 3 of a series of 6 entitled 'Astronomy masterclass' (SC0018). | ||
|strategy= | |strategy= | ||
|Learning Objectives= | |Learning Objectives= | ||
* Appreciate the vast differences between the bodies in the solar system and some of the reasons for these differences<br /> | |||
* Understand why robots are used to explore these distant worlds<br /> | |||
* Understand how asteroid cratering can be used to date surfaces on rocky bodies and how is leads to evidence of water flows on mars and Europa | |||
|additional resources= | |additional resources= | ||
|useful information= | |useful information= | ||
|related resources=[[Astronomy Masterclass]], [[It's full of stars]], [[From Earth to Moon]], [[Recreating the Big Bang]], [[88 Miles per hour]], [[88 Miles per hour]] | |related resources=[[Astronomy Masterclass]], [[It's full of stars]], [[From Earth to Moon]], [[Recreating the Big Bang]], [[88 Miles per hour]], [[88 Miles per hour]] | ||
|other= | |other= | ||
|format= | |format=An 30 minute narrated screencast which is part of the full, six hour 'Astronomy Masterclass'. Also supplied as a Prezi and a Acrobat file should you wish to do the presentation yourself. The [[Astronomy Masterclass]] overview tells how the resource was used. | ||
|resources=Choice of formats: | |||
* Narrated video - 30 mins http://www.youtube.com/watch?v=AVBU4SrVNvU&feature=relmfu <br /> | |||
* Astronomy Masterclass - Prezi Slide presentation - http://prezi.com/2hk390sfkqjh/the-astronomy-masterclass/ <br /> | |||
* Acrobat PDF document - for session 3, use pages 69-97 of Astronomy masterclass.pdf at https://www.box.com/shared/aqnk3lvr09 (241Mb) | |||
* TES Resources link - http://www.tes.co.uk/teaching-resource/The-Astronomy-Masterclass-6070303/ This also includes links to other YouTube videos. | |||
Title page graphic only: | |||
[[File:astronomymasterclasstitlepage.png]] | |||
}} | |||
[[Category:Secondary]] [[Category:Science]] | [[Category:Secondary]] [[Category:Science]] | ||
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'''Session 3 – Celestial Wanderers''' | '''Session 3 – Celestial Wanderers''' | ||
Having looked at the moon last | Having looked at the moon last session we turn our attention to the rest of the solar system – specifically focusing on the geology and evolution of these rocky bodies.<br /> | ||
* The voyager probes were the first close up look at the outer solar system – taking advantage of a rare “lining up” of the gas giants allowing one probe to flyby them all. Video – The story of Voyager 2. Music is NOT Bach but I doubt any student will notice.<br /> | |||
- http://www.nasa.gov/mission_pages/voyager/index.html<br /> | :- http://www.nasa.gov/mission_pages/voyager/index.html<br /> | ||
- http://en.wikipedia.org/wiki/Voyager_2<br /> | :- http://en.wikipedia.org/wiki/Voyager_2<br /> | ||
* Feb 14th 1991 Voyager took a departing valentine of the solar system – 6 of the 8 planets would prove visible in its final image before its cameras were shut down.<br /> | |||
- http://www.nasa.gov/mission_pages/voyager/voyager-20100212.html<br /> | :- http://www.nasa.gov/mission_pages/voyager/voyager-20100212.html<br /> | ||
* The outer planets<br /> | |||
- http://en.wikipedia.org/wiki/Jupiter<br /> | :- http://en.wikipedia.org/wiki/Jupiter<br /> | ||
- http://en.wikipedia.org/wiki/Saturn<br /> | :- http://en.wikipedia.org/wiki/Saturn<br /> | ||
- http://en.wikipedia.org/wiki/Uranus<br /> | :- http://en.wikipedia.org/wiki/Uranus<br /> | ||
- http://en.wikipedia.org/wiki/Neptune<br /> | :- http://en.wikipedia.org/wiki/Neptune<br /> | ||
* Rocky bodies more interesting as we can see their surfaces.<br /> | |||
* Mimas has a Massive Crater http://en.wikipedia.org/wiki/Mimas_(moon)<br /> | |||
* Such craters also exist on Earth<br /> | |||
- Manicouagan is clearly visible to astronauts<br /> | :- Manicouagan is clearly visible to astronauts<br /> | ||
- http://earthobservatory.nasa.gov/IOTD/view.php?id=3325<br /> | :- http://earthobservatory.nasa.gov/IOTD/view.php?id=3325<br /> | ||
* The moon also has many craters – although lava flows in the “seas” have covered over many of them.<br /> | |||
- Image taken by Apollo 8<br /> | :- Image taken by Apollo 8<br /> | ||
- Dating surfaces possible by looking at crater counts. No craters = young surface<br /> | :- Dating surfaces possible by looking at crater counts. No craters = young surface<br /> | ||
* Tycho crater can be seen unaided from the earth. The lines of ejecta cover ¼ of the near side of the moon.<br /> | |||
- Craters can be dated by the layering of the ejecta’s over older craters.<br /> | :- Craters can be dated by the layering of the ejecta’s over older craters.<br /> | ||
- Possible that the asteroid that formed tycho was linked to the asteroid that caused the K-T boundary extinction.<br /> | :- Possible that the asteroid that formed tycho was linked to the asteroid that caused the K-T boundary extinction.<br /> | ||
http://en.wikipedia.org/wiki/Tycho_(crater) <br /> | :- http://en.wikipedia.org/wiki/Tycho_(crater) <br /> | ||
http://en.wikipedia.org/wiki/Baptistina_family<br /> | :- http://en.wikipedia.org/wiki/Baptistina_family<br /> | ||
* Olympus Mons – Not a crater but the biggest volcano in the solar system.<br /> | |||
- http://en.wikipedia.org/wiki/Olympus_Mons<br /> | :- http://en.wikipedia.org/wiki/Olympus_Mons<br /> | ||
* The moons of the gas giants are also rich with surface geology<br /> | |||
* Io – Jovian System – extremely volcanically active (notice no craters) due to extreme tidal heating from its close orbit with Jupiter<br /> | |||
- http://en.wikipedia.org/wiki/Io_(moon)<br /> | :- http://en.wikipedia.org/wiki/Io_(moon)<br /> | ||
- http://en.wikipedia.org/wiki/Tidal_force<br /> | :- http://en.wikipedia.org/wiki/Tidal_force<br /> | ||
* Europa – Jovian System – Surface also new – but made of water Ice. Theorised to be an ocean of liquid water beneath – kept liquid by the heat generated from radioactivity and tidal energies. http://en.wikipedia.org/wiki/Europa_(moon) | |||
:- http://en.wikipedia.org/wiki/R%C3%B8mer%27s_determination_of_the_speed_of_light<br /> | |||
* Titan is the biggest moon in the solar system – all 3 phases of Methane appear to be present on Titan. http://en.wikipedia.org/wiki/Titan_(moon)<br /> | |||
* The two stacked images are taken from Mars (top) and from Earth (bottom) only noticeable difference is the more red coloration in the sky.<br /> | |||
- http://en.wikipedia.org/wiki/Venus<br /> | * Venus – covered in cloud – need Radar (next image) to see the surface<br /> | ||
:- http://en.wikipedia.org/wiki/Venus<br /> | |||
- No atmosphere as it has been lost due to excessive heat, lack of a magnetic field and low gravity.<br /> | * Mercury – a planet smaller than titan... <br /> | ||
- http://en.wikipedia.org/wiki/Mercury_planet<br /> | :- No atmosphere as it has been lost due to excessive heat, lack of a magnetic field and low gravity.<br /> | ||
:- http://en.wikipedia.org/wiki/Mercury_planet<br /> | |||
- There are plenty of craters however also evidence of water flowing over this surface. <br /> | * The final image is one of the surface Mars showing evidence of the Martian Past.<br /> | ||
- http://en.wikipedia.org/wiki/Water_on_Mars<br /> | :- There are plenty of craters however also evidence of water flowing over this surface. <br /> | ||
:- http://en.wikipedia.org/wiki/Water_on_Mars<br /> | |||
End of session 3<br /> | End of session 3<br /> | ||
