Science

13th February 2004 at 00:00
KS34:set up an experiment to mirror global warming. Following safety procedures take a tank and put water in the bottom to about a depth of half way. Colour some very concentrated salt water with red food colouring and very carefully drip it onto the normal water making sure that it stays in a layer above, being less dense than water. Set up a similar control with just normal water. Shine a UV lamp onto both tanks of water. The water with the layer on top gets warmer far more quickly showing that the energy re-radiated at a longer wavelength, lower frequency is bounced back into the water from the salt and can't escape, as it can from the control.

KS4:set up an ideas and evidence debate. Should economic concerns justify procrastination in the understanding and action needed on global warming? How do opposing sides use evidence to justify their argument? Can any scientific theory be accepted as an ultimate truth?

www.eurekalert.orgpub_releases2003-01dlnl-sdg010303.php www.arl.noaa.govpubspressFeb222000.html

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number

Comments

The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now