Lub tshuab sib ntswg yog ib hom khoom siv sib ntswg. Nws yog qhov tseem ceeb tshaj tawm ntawm cov khoom siv sib txuas (cov tshuab hluav taws xob ntau sib xyaw), hu ua lub tshuab ua ke. Tsis muaj lub npe ntawm Suav thiab lus Askiv. Nws muaj peev xwm paub ib zaug thiab tig thib ob, thiab cov kev ua haujlwm siab dua li ib txwm. Cov khoom siv tau siv tau ob npaug. Lub pob ntim muaj peev xwm tau nce ntxiv, qhov sib koom tes yog 10,000 meters, qhov kev sib ntswg yog zoo heev, thiab qis dua txheej qhov siab yog qhov tshwj xeeb rau kev ua haujlwm.
Lub tshuab nqa ob npaug tuaj yeem khi ob lossis ntau dua ib cov xov mus rau hauv ib txoj hlua los ntawm kev sib ntswg, thiab txhim kho kev ua haujlwm ntawm cov xov paj qub kom tau raws li qhov xav tau ntawm cov neeg siv khoom.