http://www.primaryschool.com.au/science.php
Go to the 'Hot or Cold' link near the top of this page for a list of links to information on many topics including clothing, animals, and energy efficiency. Suitable for junior primary and up.
http://www.physics4kids.com/files/thermo_intro.html
This section of the physics4kids site covers a wide range of sub-topics. Lower level reading age but some concepts are quite sophisticated. Mostly text based.
http://www.explainthatstuff.com
Find out how fridges, thermos, and heat pumps work on the explainthatstuff website. Clear explanations with illustrations. Also includes general information about heating and cooling. Suitable for primary level.
