[3중급] Nova science NOW
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| in the process,4 it releases the oxygen 12 that we need to survive 6 Klaus's tree also pulls co2 out of the air 123 not for its own survival,12 but to help us to live 23 it sound's incradible 12 well, 2 so is the way 12 he came up with this idea 6 it all started with the advice 123 when his 11 year old daugher,12 Claire 1 came to him for advice 23 when i started to think about this 123 i was searching for the ways 123 doing experiments 23 and right at time 2 Claire came to me 123 in the study 4 at home 4 and said she is looking for an experiment 6 to do 3 for her science fair 3 i was in middle school 123 and i had to do 123 a science fair 3 but how (can they) just pull co2 (from) the air (hi) (Clara) had an (perfect) idea l (came) to the (normal) pet shop and (l) bought a fish (food) (okay) (here) you go Have a (nice) day (thanks) you, too l (put the sodium hidroxide) (in the aest tude) (then) l (sticked) the fish pump (at the tude) turned (that) on and (run) air through (that) all (day) when Claire (is doing other thing) her experiment was (keep working) the fish pump was forcing air containing a small (bubbles) of co2 into the (tube) pull cardon dioxide 23 out of the air?4 a tall order for a little girl 23 but,2 as the daughter of a renowned scientist6 Claire already knew about global warming 123 she understood 12 that when sunlight enters the atmosphere 6 and strike the Earth's surface 23 some of it is reflected bact 12 towards space 4 in the form of heat 4 greenhouse gases like co2 123 cardon dioxide 1 work 2 like a chemical blanket 4 to trap heat 3 and keep the planet 23 nice and warm 2 but the increased burning of fossil fuels 12 was generating 2 so much 4 carbon dioxide 1 that our planet's temperature appeared 12 to be rising 3 at an alarming rate 4 A delicate balancing act begins for every cioce the team makes there is a price to pay an energy penalty can they somehow reduce the amount of energy they use? we needed to come up with a shape where you don't have to have an aquarium fish pump driving all the air thought the system but to have the wind just deliver the air and pass it through the collector it all comes down to geometry what is the size and shape of the perfect synthetic leaf one that can remove the most co2 from the air? to from out they construct a wind tunnel to study how air moves around and through a variety of surfaces the easier it is to get air through the more co2 we can collect we tried an array of strings we tried an screens we tried vertical plates of solid material that was smooth we tried vertical plates that had a knobby surface with each attempt they measure the air pressure in the wind tunnel but how (can they) just pull co2 12 (from) the air4 (hi)1 (Clara) had an (perfect) idea123 l (came) to the (normal) pet shop 123 and (l) bought a fish (food)6 (okay) 2 (here) you go 2 Have a (nice) day 23 (thanks)2 you, too12 l (put the sodium hidroxide)123 (in the aest tude) 4 (then)6 l (sticked) the fish pump123 (at the tude)4 turned (that) on23 and (run) air23 through (that)4 all (day)4 when Claire (is doing other thing)123 her experiment was (keep working)123 the fish pump was forcing air12 containing a small (bubbles) of co2 23 into the (tube) 4 |
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