Planet Science | Wired | November Autumnal Brown

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The seasons have ticked over and now we are well and truly into Autumn we thought we'd celebrate that most autumnal of colours, brown. It gets about, does brown, as you'll see from the ten questions below, but one of its most popular manifestations is of course chocolate, which is why we've chosen it for your prize! 20 lucky (well, clever) winners will receive a tooth decaying plethora of the stuff to cheer them up through the long evenings ahead.

Chocs away!

01	Which green chemical in tree leaves disappears in autumn and allows the brown, orange and red colours to become visible?
		Chlorophyll
		Polyfill
		Grant'n'Phil
		Reveal answer

02	Which of these is not a type of trout?
		Brown trout
		Rainbow trout
		Golden-furred trout
		Reveal answer

03	Which is the brown wire in an electrical plug?
		Live
		Neutral
		Earth
		Reveal answer

04	What is absent from white chocolate which stops it being brown?
		There are no cocoa solids in it.
		There is no milk in it.
		There is no sugar in it.
		Reveal answer

05	Which of these is a brown gas?
		Iron
		Oxygen
		Bromine
		Reveal answer

06	What is rust?
		Iron oxide
		Sodium chloride
		Sodium bicarbonate
		Reveal answer

07	Botanist Robert Brown discovered that pollen grains move around randomly in water. Einstein used this as the final evidence that atoms existed. What is the random motion called?
		Einsteinian motion
		Brownian motion
		Atomian motion
		Reveal answer

08	How long will a brown bear generally live for in the wild?
		5 years
		30 years
		160 years
		Reveal answer

09	What is a brown dwarf?
		The Pilot Episode of Red Dwarf
		A failed star – one without enough hydrogen fuel to burn effectively
		The core of any Earth-like planet
		Reveal answer

10	Why do cut apples turn brown in the air?
		An enzyme is released from the cut apple cells which reacts oxygen with other chemicals in the fruit turning it brown.
		Brown juice from the core seeps out turning the whole fruit brown.
		A fungus is released from the pips and this covers the fruit in a brown fungus layer.
		Reveal answer

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