[Catalist] Professional Learning Session - Managing our recreational fisheries

[rsskinner at optusnet.com.au]

Catalystians - and especially the physicsy-type ones.

 

I am struggling to explain the topic of Greenhouse effect with my year 12s.
Absorption spectra are on the syllabus - where certain wavelengths of
radiation passthrough a gas and certain lines are absorbed due to electron
level transitions. But with molecules, electrons are not promoted - the
absorption there is due to the uptake of energy mainly from the molecular
bonds.

When we focus on the gas carbon dioxide I have found that the absorption
only takes place at the wavelengths 2.7, 4.3 and 15 micrometres, the latter
line being a bit broader that the others. These energy levels account for
about 8% of the total IR spectrum. Water vapour accounts for about 60%
absorption of IR.

 

The question is: How can I explain to my year 12 physics students that by
removing all the carbon dioxide from the atmosphere (apart from killing most
of the life on Earth) this will significantly lower the temperature of the
Earth.

Roy

 

From: Catalist <catalist-bounces at lists.stawa.net> On Behalf Of Nicole
Lehmann
Sent: Friday, 23 April 2021 7:36 AM
To: catalist at lists.stawa.net
Subject: [Catalist] Professional Learning Session - Managing our
recreational fisheries

 

Professional Learning Session: Managing our recreational fisheries

Thursday 13 May 2021

4:00pm - 5.30pm

FREE

Presented by: Fisheries Education Team, 39 Northside Drive, Hillarys WA 6025

Come and gain an insight into the fishery management tools the Department of
Primary Industries and Regional Development uses to maintain the
sustainability of WA's fish resources. In this Professional Learning session
for teachers, we will explore why we need fishing rules and the ways in
which the different types of rules work.

Numbers are strictly limited.

https://www.eventbrite.com.au/e/professional-learning-session-managing-our-r
ecreational-fisheries-tickets-150684012939



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DPIRD acknowledges the Traditional Owners of Country, the Aboriginal people
of the many lands that we work on and their language groups throughout
Western Australia and recognise their continuing connection to the land and
waters.

We respect their continuing culture and the contribution they make to the
life of our regions and we pay our respects to their Elders past, present
and emerging.

Artwork: "Kangaroos going to the Waterhole" by Willarra Barker.


 

 


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where possible. Wash hands regularly. Stay home if unwell. Get tested if
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