woodchurch science

here’s a two page document download of all the important ‘how science works’ key words and phrases.

this link takes you straight to the aqa site and the latest updated past papers (and mark schemes). march 2007 now included. why not try a few for your revision. tests next week!

the year 10 separate science group visited stanlow refinery today. here’s some interesting information about it, as well as some aerial photos. someone asked what will happen when all the oil runs out and stanlow has nothing to do. here’s shell’s answer - shellrenewables.com. here’s a handy flow chart showing how stanlow works.

here’s the link to the science uncovered resources. you’ll need the username and password. see your science teacher.

a united nations expert has condemned the growing use of crops to produce biofuels as a replacement for petrol as a ‘crime against humanity’. the un special rapporteur on the right to food, jean ziegler, said he feared biofuels would bring more hunger. just because we’re running out of oil is it right that we should ‘grow fuel’ at the expense of feeding poorer nations?

here’s a quick guide to biofuels.

apparently it is now legal to make up to 2,500 litres of your own biodiesel, enough to run the average family car, without having to pay any tax. “home brewers” can convert chip fat from pubs and restaurants, which would otherwise go straight to landfill. companies who make the kits needed to convert this unwanted oil are reporting a steady rise in sales. some folks are also buying up supplies of vegetable oil to add to their fuel tanks.

gareth earnden of 10yz has asked how the sugar particles are held together in sugar lumps. suppliers of sugar cubes make them by mixing sugar crystals with sugar syrup. they were invented in 1841 by jakub kryštof rad.

at last the problem of discarded chewing gum may soon be over. chemists have invented a completely biodegradable type of chewing gum that washes away within a week. revolymer claims its product is easier to remove from pavements, shoes and carpets than gums currently on sale.

this link goes straight to the aqa page for science modular tests commencing in 2006. all the answer sheets and mark schemes are available too. can be slow during the day (aqa very busy) but definitely works, just tried it 7pm.

here’s the link for this mindmap