{"id":8491,"date":"2021-11-21T12:04:33","date_gmt":"2021-11-21T05:04:33","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=8491"},"modified":"2021-11-21T12:31:34","modified_gmt":"2021-11-21T05:31:34","slug":"tai-sao-ngong-troi-khi-bay-xa-thuong-xep-thanh-hinh-mui-ten-hoac-dan-hang-ngang","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/tai-sao-ngong-troi-khi-bay-xa-thuong-xep-thanh-hinh-mui-ten-hoac-dan-hang-ngang\/","title":{"rendered":"T\u1ea1i sao ng\u1ed7ng tr\u1eddi khi bay xa th\u01b0\u1eddng x\u1ebfp th\u00e0nh h\u00ecnh m\u0169i t\u00ean ho\u1eb7c d\u00e0n h\u00e0ng ngang?"},"content":{"rendered":"\n<p>Ng\u1ed7ng tr\u1eddi l\u00e0 lo\u00e0i chim di c\u01b0 tr\u00fa \u0111\u00f4ng, m\u1ed7i khi \u0111\u1ebfn m\u00f9a thu \u0111\u00f4ng, t\u1eeb v\u00f9ng Sib\u00earia, qu\u00ea h\u01b0\u01a1ng c\u1ee7a ch\u00fang, k\u1ebft th\u00e0nh \u0111\u00e0n, bay \u0111\u1ebfn mi\u1ec1n Nam \u1ea5m \u00e1p \u0111\u1ec3 tr\u00fa \u0111\u00f4ng.<\/p>\n\n\n\n<p>Trong chuy\u1ebfn du l\u1ecbch \u0111\u01b0\u1eddng d\u00e0i, \u0111\u1ed9i h\u00ecnh c\u1ee7a \u0111\u00e0n ng\u1ed7ng t\u1ed5 ch\u1ee9c r\u1ea5t ch\u1eb7t ch\u1ebd, ch\u00fang th\u01b0\u1eddng x\u1ebfp th\u00e0nh h\u00ecnh m\u0169i t\u00ean ho\u1eb7c d\u00e0n h\u00e0ng ngang, khi ch\u00fang bay c\u00f2n kh\u00f4ng ng\u1eebng ph\u00e1t ra ti\u1ebfng k\u00eau &#8220;c\u1ea1c, c\u1ea1c&#8221;. Ch\u00fang d\u00f9ng t\u00edn bi\u1ec7u \u0111\u00f3 \u0111\u1ec3 ch\u0103m s\u00f3c l\u1eabn nhau, k\u00eau g\u1ecdi nhau, c\u1ea5t c\u00e1nh bay v\u00e0 h\u1ea1 c\u00e1nh ngh\u1ec9 ng\u01a1i.<\/p>\n\n\n\n<p>T\u1ed1c \u0111\u1ed9 bay c\u1ee7a ng\u1ed7ng tr\u1eddi r\u1ea5t nhanh, m\u1ed7i gi\u1edd c\u00f3 th\u1ec3 bay \u0111\u01b0\u1ee3c 69 &#8211; 90 km\/h, nh\u01b0ng do l\u1ed9 tr\u00ecnh bay di chuy\u1ec3n qu\u00e1 d\u00e0i, v\u00ec v\u1eady c\u1ea7n 1 &#8211; 2 th\u00e1ng m\u1edbi c\u00f3 th\u1ec3 ho\u00e0n th\u00e0nh xong chuy\u1ebfn \u0111i. Trong chuy\u1ebfn phi h\u00e0nh \u0111\u01b0\u1eddng d\u00e0i, ng\u1ed7ng tr\u1eddi ngo\u00e0i vi\u1ec7c v\u1ed7 c\u00e1nh ra c\u00f2n bi\u1ebft l\u1ee3i d\u1ee5ng lu\u1ed3ng kh\u00f4ng kh\u00ed tr\u00ean cao \u0111\u1ec3 bay l\u01b0\u1ee3n tr\u00ean kh\u00f4ng trung, v\u00ec nh\u01b0 v\u1eady ch\u00fang c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c s\u1ee9c l\u1ef1c. Khi con ng\u1ed7ng bay \u1edf ph\u00eda tr\u01b0\u1edbc ph\u00e1t ra lu\u1ed3ng kh\u00f4ng kh\u00ed t\u0103ng l\u00ean r\u1ea5t nh\u1eb9, con ng\u1ed7ng \u1edf ph\u00eda sau s\u1ebd l\u1ee3i d\u1ee5ng xung l\u1ef1c c\u1ee7a lu\u1ed3ng kh\u00f4ng kh\u00ed n\u00e0y \u0111\u1ec3 bay l\u01b0\u1ee3n tr\u00ean kh\u00f4ng trung. Nh\u01b0 v\u1eady, t\u1eebng con t\u1eebng con n\u1ed1i \u0111u\u00f4i nhau x\u1ebfp th\u00e0nh \u0111\u1ed9i h\u00ecnh m\u0169i t\u00ean v\u00e0 x\u1ebfp th\u00e0nh h\u00e0ng ngang ch\u1ec9nh t\u1ec1.<\/p>\n\n\n\n<p>Ngo\u00e0i ra, ng\u1ed7ng tr\u1eddi x\u1ebfp th\u00e0nh \u0111\u1ed9i h\u00ecnh m\u0169i t\u00ean ho\u1eb7c h\u00e0ng ngang c\u0169ng l\u00e0 bi\u1ec3u hi\u1ec7n b\u1ea3n n\u0103ng h\u1ee3p \u0111\u00e0n, b\u1edfi v\u00ec nh\u01b0 v\u1eady s\u1ebd c\u00f3 l\u1ee3i cho vi\u1ec7c ph\u00f2ng ng\u1ef1 k\u1ebb \u0111\u1ecbch. \u0110\u00e0n ng\u1ed7ng tr\u1eddi th\u01b0\u1eddng do m\u1ed9t con ng\u1ed7ng gi\u00e0 c\u00f3 kinh nghi\u1ec7m l\u00e0m \u0111\u1ed9i tr\u01b0\u1edfng, bay ph\u00eda tr\u01b0\u1edbc, \u0111a s\u1ed1 nh\u1eefng con ng\u1ed7ng non y\u1ebfu \u1edbt \u0111\u1ec1u xen v\u00e0o gi\u1eefa h\u00e0ng. Khi ngh\u1ec9 ng\u01a1i b\u00ean d\u00f2ng n\u01b0\u1edbc \u0111\u1ec3 \u0103n c\u1ecf n\u01b0\u1edbc, th\u01b0\u1eddng c\u00f3 m\u1ed9t con ng\u1ed7ng gi\u00e0 c\u00f3 kinh nghi\u1ec7m gi\u1eef vai tr\u00f2 &#8220;l\u00ednh g\u00e1c&#8221;. N\u1ebfu ng\u1ed7ng tr\u1eddi bay \u0111\u01a1n l\u1ebb v\u1ec1 ph\u00eda nam th\u00ec r\u1ea5t d\u1ec5 g\u1eb7p nguy hi\u1ec3m b\u1ecb k\u1ebb \u0111\u1ecbch \u0103n th\u1ecbt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ng\u1ed7ng tr\u1eddi l\u00e0 lo\u00e0i chim di c\u01b0 tr\u00fa \u0111\u00f4ng, m\u1ed7i khi \u0111\u1ebfn m\u00f9a thu \u0111\u00f4ng, t\u1eeb v\u00f9ng Sib\u00earia, qu\u00ea h\u01b0\u01a1ng c\u1ee7a ch\u00fang, k\u1ebft th\u00e0nh \u0111\u00e0n, bay \u0111\u1ebfn mi\u1ec1n Nam \u1ea5m \u00e1p \u0111\u1ec3 tr\u00fa \u0111\u00f4ng. Trong chuy\u1ebfn du l\u1ecbch \u0111\u01b0\u1eddng d\u00e0i, \u0111\u1ed9i h\u00ecnh c\u1ee7a \u0111\u00e0n ng\u1ed7ng t\u1ed5 ch\u1ee9c r\u1ea5t ch\u1eb7t ch\u1ebd, ch\u00fang th\u01b0\u1eddng x\u1ebfp th\u00e0nh h\u00ecnh [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,10],"tags":[],"class_list":["post-8491","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-sinh-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=8491"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8491\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}