1) which energy resource releases carbon dioxide when burnt? a) crude oil b) hydroelectric c) solar d) uranium 2) which 2 energy resources are non-renewable a) coal b) nuclear c) wind d) wave e) tidal f) solar 3) what happens to wasted energy? a) it cools the surroundings b) it heats the surroundings 4) which gas contributes most to global warming? a) oxygen b) carbon dioxide 5) which of the following are renewable? a) coal b) natural gas c) solar d) wind 6) what is an advantage of using a solar panel? a) it’s really expensive b) renewable 7) what is a disadvantage if using a solar panel? a) sun is not reliable it is not always sunny b) it is non-renewable 8) when we remove oxygen from aluminium oxide, what type of reaction is this? a) neutralisation b) reduction

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