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IELTS PRACTtCETASK

Staying cool naturally

With        0t the Sianet every                 . •ctroty wary that                be abe to                enough   to meet demand &urng the wanE5t          use a tremendous Of enegy Of torvvad•thnkng                 may be find the answe by studwng the war'     a              ttEy use desiçns inspired the to            human is that Over billions Of      nature     has          to            that lunanity faces today, In systems. IS             Human manufacturers. the other hand. use     o              as byOO(iEtS and    ship         across globe. Natue                 what •t   It

               The lolbvvtnq des'•gns are               Of                                                     to               Ot

1  Ventilation inspired by termites

Perhaps the most exanWe Of              it              to            S ventiat.on Osoied by termites A few years                scientists obseved tut termte nug•ds   ccx* :nsde.

blister.nq heat. The insects that 'eat by creatoq ag gxx*ets 'n suateoc •n the nnnds they nhabit This ck'ver design creates a natua ventilaton system. c'ivtoq aig tte gyœess of convection Ald•itect Ma Pearce and enqrneennq tim that dea to tRAd the Fast9ate a large of lice and shopping centre sn Zimbat»ve that 's cc•d with the cx,tsoe 8. The system uses as much as convenional aiFcondluomnq

2  Countercurrent heat exchange inspired by birds

Penguns that live 'n have an that heOs them s.vtve tn frigid watg The vens at teries their feet have a countercurent confim_raton. whcn up that •s doser to the anima'S core the Nood at Its extremtes. By keepnqco•r bbod cbser to srww and water. such bilds Ose less body heat overall. Heat exòanqas n ndustn*scaeheatng coong systems use a similar type of princOte to maximize efhcia•cy.

3  Moisttwe             inspired by ticks

A system called a liquid des:ccant dehumiditer desemed to from the ai insede a b."ng (traditional also reduces hunvóty), It uses a [O.jd sat so:auton - somettvng simiar to the Equid that a parasitic nsect called the tyown dog ta secretes to õsorb wate from the ai 4 Efficient fans inspired by whales

In another t eke on better fan design. a cmwany fan t*acÞs that Iyo-chice greater hit. therefore move mote ail thmks to desol ot a hunvba:k whEs fhppg. WhalePo•.vey says its tals move 25% nue than using 20% Ess enegy. cmwany ts asc working more wirx]

Ouestions

Answer the Questions below

Choose NO MORETHAN THRËEWORDS from the passage for eæh answer

What name given ta tlæ idea of taking ideas from nature to sEve human needs?

2                   What do industrial processes consume a wasteful way?

3                   What do termites create order to coo their mounds?

4                   In which pæt of a pengu.n•s does warmer bood circulate?

5                   What mechanism used by air-conditioning units S inspired by penguins? 6 Which c:eature produces a fluid that take moisture from air7 7 Which feature ot one species at whde do Wha'ePowB copy?  much more effective are Whale%we ans?