Tshuaj kev - Mount Vesuvius rau lub rooj

Yuav ua li cas siv ib entertaining zaj lus qhia nyob rau hauv Science News for KIDS nyob rau hauv lub chav ua noj thiab ua rau nws muaj kev ruaj ntseg thiab kev lom zem rau koj tus me nyuam? Peb yuav ua tiag los tuav ib tug tiag tiag tshuaj kev - Roob hluav taws rau hauv ib ncua rooj phaj. Rau qhov no, koj yuav tsum tau qhov nram qab no ntaub ntawv thiab cov tshuaj:

- ib daim ntawm cov av nplaum (los ntawm nws peb yuav ua kom cov roob hluav taws nws tus kheej);

- ib lub phaj;

- acetic acid;

- ci dej qab zib;

- cav ntxuav tais diav kua;

- zas xim.

Qhov saum toj no Cheebtsam yuav nrhiav tau yooj yim nyob rau hauv txhua txhua lub tsev los yog nyob rau hauv lub economic department ntawm ib tug nyob ze khw. Lawv yog cov heev kev ruaj ntseg, tab sis zoo li tej thwmsim nyob rau hauv Science News for KIDS, qhov no yuav tseem yuav tsum tau ua raws li kev ruaj ntseg cov kev cai.

Txoj hauj lwm cov lus piav qhia:

1. Plasticine thiab ua lub hauv paus ntawm lub roob hluav taws lub khob hliav qab nrog ib lub qhov. Txuas lawv ua tib zoo ntaus ntug. Peb tau txais plasticine roob hluav taws layout rau lub chaw siab tshaj. Puab luaj li cas ntawm peb tsim yuav tsum tau muaj ib lub voj voog nrog ib lub cheeb ntawm txog 100 - 200 mm. Ua ntej yuav txhim kho tau qhov layout nyob rau hauv ib lub phaj los yog tais mus saib peb lub roob hluav taws nyob rau hauv los: peb sau nws nrog dej thiab saib yog hais tias nws kis tau nws. Yog hais tias txhua yam yog tag nrho cov cai - muab cov layout ntawm lub roob hluav taws ntawm lub phaj.
2. Peb tam sim no tsiv mus rau lub tom ntej no yog ib feem - ua noj ua haus lava. Peb poob pw tsaug zog nyob rau hauv peb mock roob hluav taws los ntawm cov av nplaum ib diav ntawm ci dej qab zib, cav ntxuav tais diav kua nyob rau hauv tib lub volume thiab ib tug zas xim uas yuav tsuas rau yav tom ntej kev tawg ntawm lava nyob rau hauv lub sib nug xov tiag tiag xim. Yuav kom ua tau lub siab tshaj plaws kev zoo sib thooj, koj muaj peev xwm siv xim rau khoom noj, cov me nyuam xim pleev xim thiab txawm zoo tib yam beetroot kua txiv. Qhov no tshuaj yog mus recreate qhov kev paub ntawm ib tug me nyuam nyob rau hauv lub qhov muag ntawm tus volcanic uas nyob rau hauv cov xwm.
3. Yuav pib qhov uas yog tsim nyog los sau cov kev ua qab yias-plaub ntawm ib khob ntawm vinegar. Thaum lub sij hawm lub tshuaj cov tshuaj tiv thaiv ib tug compound ntawm dej qab zib thiab acetic acid ua rau cov tsim ntawm ntsev ntawm carbonic acid, uas koom rau lub tebchaw tsis ruaj tsis khov thiab tam sim ntawd decomposes rau dej thiab carbon dioxide. Nws yog ib qhov txheej txheem ntawm ua npuas ncauj thiab muab peb saib ntawm lub tawg ntawm lub roob hluav taws nrog rau cov lava tsev nyob rau hauv qhov chaw siab tshaj. Tshuaj kev tiav.

Ua qauv qhia ntawm ib tug active lub roob hluav taws nyob rau hauv lub tsev kawm ntawv

Nyob rau hauv tas li ntawd mus rau saum toj-piav hom qauv qhia kev ruaj ntseg uas, muaj cov tseem ntau txoj kev kom tau qhov lub roob hluav taws rau hauv lub rooj. Tab sis cov no thwmsim yog zoo tshaj plaws ua nyob rau hauv ib tug qhia tshwj xeeb uas npaj thaj chaw - tsev kawm ntawv Science News for KIDS laboratories. Qhov tseem zoo-paub rau tag nrho cov hauv tsev kawm ntawv Roob hluav taws Boettger. Rau nws tus cwj pwm uas yuav tsum tau ammonium dichromate, uas yog poured rau ib lub toj, nyob rau sab saum toj ntawm nws ua si nraum zoov. Cov kev ua qab yias yog muab tso rau ib daim ntawm paj rwb soaked nyob rau hauv dej cawv, uas yog nroj cig cuag. Thaum lub sij hawm cov tshuaj tiv thaiv ib tug nitrogen, dej thiab chromium oxide. Cov tshuaj tiv thaiv hais zoo heev rau cov tawg ntawm ib tug active lub roob hluav taws.

Yuav kom cim, raws li zoo raws li rau qhov kev loj hlob ntawm scholarship nyob rau hauv cov me nyuam yog zoo kev cob cog rua ntawm ib tug tshuaj xyaum ua tej yam nrog ib co zoo tshaj plaws-paub cov piv txwv ntawm qhov uas nyob rau hauv lub keeb kwm ntawm tib neeg kev vam meej, piv txwv li, nrog cov tawg ntawm Mount Vesuvius nyob rau hauv ltalis, tshwj xeeb tshaj yog vim hais tias ntawm nws cov zoo thiab rau cov kev pab ntawm lub qab ntug yuav los ua piv txwv los ntawm reproductions ntawm kuj zoo kawg painting Karla Bryullova "Lub Xeem hnub ntawm Pompeii" (1827-1833 biennium).

Tsis muaj kev txaus siab rau cov me nyuam kuj yuav zaj dab neeg txog ib tug es tsis tshua muaj thiab muaj nqi profession volcanologist. Cov tub txawg lossi saib xyuas twb tu noob thiab active volcanoes hnub no, ua cov kev xav txog tej lub sij hawm thiab lub dag lub zog rau yav tom ntej eruptions.