Sites2See are great info packages on all sorts of topics (eg. Volcanoes). They contain images, evaluated links and more - they're put together by CLI (Centre for Learning Innovation, part of the NSW DET) and published on TALE (Teaching and Learning Exchange). Some TALE content is DET intranet only, but the Sites2See are freely available on the internet.
For yourself, try browsing the range of available Sites2See (note their size is neatly optimised for netbook-sized screens).
You know the way some kids just go to Wikipedia because they know it and it's familiar? Try suggesting they add Sites2see to their searches, to land on these excellent information packages.