Energy Trivia Question: 1 Which colour light has the most energy? Red, orange, yellow, green, blue, indigo or violet? View the answerHide answer Violet. Violet light has about 1.5x as much energy as red light. Question: 2 True or False: Some plants get their energy from eating bugs. View the answerHide answer False. There are plants that eat bugs, but they do it to get vitamins, minerals and other nutrients. Those plants still get their energy from the light of the sun. Question: 3 If you could gather all the energy in a lightning bolt how much would it be? View the answerHide answer The average lightning bolt contains about 5,000,000,000 joules. Scientists usually say this number as 5 gigajoules. This is equivalent to exploding 1000kg of TNT! Question: 4 Energy cannot be created or destroyed. What do scientists call this rule? View the answerHide answer The Law of Conservation of Energy. Question: 5 Which organ in your body uses the most chemical energy? View the answerHide answer Brain. About 20%! And about ⅔ of it goes towards firing and receiving signals through neurons and nerves. Question: 6 True or False: you can cook food using sound View the answerHide answer True. Remember that sound is another kind of energy and can transform into heat. You'll need a lot of sound for a very long time though! Question: 7 True or False: Sydney was the first town in Australia to have electric street lights. View the answerHide answer False Tamworth in NSW switched on arc and incandescent street lights in 1888. Question: 8 The longest human electrical circuit ever made had how many people in it? View the answerHide answer 1315. The longest human electrical circuit was achieved by Presbyterian Ladies College in Sydney, New South Wales, Australia, on 20 August 2015. The attempt took place as part of National Science Week. Question: 9 What’s the highest voltage ever recorded from an electric eel? View the answerHide answer 860 volts. That’s the equivalent of 575 AA batteries! It comes from a species discovered in 2019, Electrophorus voltai. One of the scientists, speaking from personal experience, said that a person probably wouldn’t feel a difference between a shock of 500 volts and anything higher. “It just hurts,” he says. High voltage but low amperage. Question: 10 True or false: The word “electrocute” comes from the English words “electricity” and “execute”. View the answerHide answer True. So you’ve only been electrocuted if you die. Otherwise, you’ve just been shocked. Question: 11 The word “electric” comes from the Greek word elektron, which means... View the answerHide answer Amber. William Gilbert, an English physician, physicist and natural philosopher, used amber to study static electricity. Question: 12 In 1752, American Benjamin Franklin proved that lightning is an electrical phenomenon. His experiment used: View the answerHide answer A kite, a key, a silk ribbon, a metal wire, and a special jar for storing electricity. Question: 13 A pacemaker is a small device some people have installed in their chest or abdomen. It uses electrical pulses to do what? View the answerHide answer Keep your heartbeat regular. Question: 14 True or false: Electric cars have been around for over 100 years. View the answerHide answer True. William Morrison of Des Moines, Iowa built the first successful electric automobile in the United States in 1891. In 1900 about one-third of all cars found on the roads of New York City, Boston, and Chicago were electric. Question: 15 Can cockroaches sense electrical fields? View the answerHide answer Yes! Question: 16 Which scientist first measured the speed of light? View the answerHide answer Ole Rømer. He used planets to help him calculate the speed of light. His methods were so accurate that the only reasons his measurements were not closer was because other people’s calculations of planet sizes/distances were a bit off. Question: 17 What is the speed of light (in vacuum)? View the answerHide answer 300 million metres per second (that’s 8 zeros after the 3!) Question: 18 A rainbow has the colours red, orange, yellow, green, blue, indigo and violet (ROYGBIV) in that order from outside to inside. What is the colour order of the secondary rainbow from a double rainbow? View the answerHide answer VIBGYOR Love Science? Subscribe! Join our newsletter Receive more lesson plans and fun science ideas. Calendar of Events Chemical Concoctions, Sydney Olympic Park Sept 29 Sep 29, 2020 9AM - 12PM Price: $45 - $49 Book Now! Creative Coding Online, Sept 29 & 30 Sep 29, 2020 - Sep 30, 2020 9AM - 12PM Price: $100 Book Now! CSI Forensics, Sydney Olympic Park Sept 29 Sep 29, 2020 1PM - 4PM Price: $45 - $49 Book Now! 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