We have observed and analysed cakes and chocolates to investigate if they resemble rocks which are sedimentary - have bits of rock merged together, metamorphic - layers of rock squashed down or changed by heat or igneous rocks which have been melted and are pitted with air holes.

What do you think about a Mars Bar? Sedimentary or metamorphic?

What do you think about Mr Kipling's Angel Slice. Metamorphic or igneous?

What do you think about Malteasers. Igneous or sedimentary?