4 Work with a partner. Answer the quiz questions about energy sources. 1 How much of the energy used by TVs is used while they're on standby? A 10% C 60% B 35% D 85% 2 How long can a game console run for if you recycle one aluminium can? A 30 minutes C 2 hours B 1 hour D 10 hours 3 Biodiesel is a kind of biofuel used in diesel engines. Which of these things CAN'T it be made from? A coconuts c potatoes B used cooking oil D sunflower seeds How much of the world's electricity does the Sun provide every 15 minutes? A Enough for three years. c Enough for a day. B Enough for a year. D Enough for a month.​