{"id":8449,"date":"2021-11-21T11:59:34","date_gmt":"2021-11-21T04:59:34","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=8449"},"modified":"2021-11-21T12:31:36","modified_gmt":"2021-11-21T05:31:36","slug":"tai-sao-rong-co-canh-than-hinh-to-lon-nhu-vay-lai-co-the-bay-luon-tren-khong-trung","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/tai-sao-rong-co-canh-than-hinh-to-lon-nhu-vay-lai-co-the-bay-luon-tren-khong-trung\/","title":{"rendered":"T\u1ea1i sao r\u1ed3ng c\u00f3 c\u00e1nh th\u00e2n h\u00ecnh to l\u1edbn nh\u01b0 v\u1eady l\u1ea1i c\u00f3 th\u1ec3 bay l\u01b0\u1ee3n tr\u00ean kh\u00f4ng trung?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Khi kh\u1ee7ng long \u1edf tr\u00ean Tr\u00e1i \u0110\u1ea5t c\u00f2n x\u01b0ng v\u01b0\u01a1ng x\u01b0ng b\u00e1, c\u00f3 m\u1ed9t lo\u00e0i \u0111\u1ed9ng v\u1eadt b\u00f2 s\u00e1t g\u1ecdi l\u00e0 r\u1ed3ng c\u00f3 c\u00e1nh \u0111\u00e3 chi\u1ebfm gi\u1eef m\u1ed9t kh\u00f4ng gian r\u1ed9ng l\u1edbn. Trong t\u01b0\u1edfng t\u01b0\u1ee3ng c\u1ee7a ch\u00fang ta, c\u01a1 th\u1ec3 c\u1ee7a kh\u1ee7ng long r\u1ea5t to l\u1edbn, cho d\u00f9 l\u00e0 b\u00f2 tr\u00ean m\u1eb7t \u0111\u1ea5t c\u0169ng kh\u00f4ng d\u1ec5 d\u00e0ng, th\u00ec l\u00e0m sao l\u1ea1i c\u00f3 th\u1ec3 bay l\u01b0\u1ee3n nh\u1eb9 nh\u00e0ng tr\u00ean kh\u00f4ng trung gi\u1ed1ng nh\u01b0 chim \u0111\u01b0\u1ee3c?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u00e0 sinh v\u1eadt c\u1ed5 h\u1ecdc cho r\u1eb1ng, nguy\u00ean nh\u00e2n ch\u1ee7 y\u1ebfu nh\u1ea5t d\u1eabn \u0111\u1ebfn r\u1ed3ng c\u00f3 c\u00e1nh c\u00f3 th\u1ec3 bay \u0111\u01b0\u1ee3c l\u00e0 ch\u00fang c\u00f3 c\u00e1nh. C\u00e1nh c\u1ee7a r\u1ed3ng c\u00f3 c\u00e1nh do m\u00e0ng c\u1ee7a da c\u1ea5u th\u00e0nh, lo\u1ea1i m\u00e0ng n\u00e0y g\u1ecdi l\u00e0 m\u00e0ng bay. M\u00e0ng bay do x\u01b0\u01a1ng c\u00e1nh tay, \u0111\u1ed1t ng\u00f3n tay th\u1ee9 t\u01b0 v\u1eeba to v\u1eeba d\u00e0i (\u0111\u1ed1t c\u00e1nh) v\u00e0 x\u01b0\u01a1ng c\u00e1nh c\u00f9ng ch\u1ed1ng \u0111\u1ee1, \u0111\u1ed1t tr\u01b0\u1edbc v\u1eeba nh\u1ecdn v\u1eeba nh\u1ecf, nh\u00ecn t\u1eeb g\u00f3c \u0111\u1ed9 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">thi\u1ebft k\u1ebf<\/a> bay th\u00ec h\u00ecnh d\u00e1ng n\u00e0y r\u1ea5t c\u00f3 l\u1ee3i cho vi\u1ec7c bay tr\u00ean kh\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i nh\u1eefng \u0111i\u1ec1u \u0111\u00f3 ra, c\u1ea5u t\u1ea1o c\u1ee7a x\u01b0\u01a1ng ng\u1ef1c v\u00e0 kh\u1edbp vai c\u1ee7a r\u1ed3ng c\u00f3 l\u1ee3i cho s\u1ee9c b\u00e1m c\u1ee7a c\u01a1 th\u1ecbt, c\u01a1 th\u1ecbt kho\u1ebb l\u00e0m cho ch\u00fang khi bay l\u01b0\u1ee3n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ed1ng d\u1ee1 m\u1ea1nh m\u1ebd. Theo t\u00ednh to\u00e1n, r\u1ed3ng c\u00f3 c\u00e1nh lo\u1ea1i l\u1edbn c\u00f3 th\u1ec3 bay l\u01b0\u1ee3n ch\u1eadm r\u00e3i gi\u1ed1ng nh\u01b0 chim qu\u00e2n h\u1ea1m, r\u1ed3ng c\u00f3 c\u00e1nh lo\u1ea1i trung b\u00ecnh l\u1ea1i t\u01b0\u01a1ng t\u1ef1 nh\u01b0 chim h\u1ea3i \u00e2u, c\u00f2n r\u1ed3ng c\u00f3 c\u00e1nh lo\u1ea1i nh\u1ecf linh ho\u1ea1t g\u1ea7n gi\u1ed1ng nh\u01b0 c\u00e1c lo\u00e0i chim nh\u1ecf. Do v\u1eady c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng, r\u1ed3ng c\u00f3 c\u00e1nh kh\u00f4ng ch\u1ec9 l\u1edbn b\u00e9 kh\u00e1c nhau, h\u00ecnh d\u00e1ng \u0111a d\u1ea1ng, m\u00e0 c\u00f2n c\u00e1ch th\u1ee9c bay l\u01b0\u1ee3n c\u0169ng c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3i ph\u1eabu h\u1ecdc c\u00f2n cho th\u1ea5y, b\u1ed9 x\u01b0\u01a1ng c\u1ee7a r\u1ed3ng c\u00f3 c\u00e1nh ch\u1ed1ng \u0111\u1ee1 \u0111\u00f4i c\u00e1nh c\u00f3 tr\u1ea1ng th\u00e1i r\u1ed7ng trong, b\u1ed9 x\u01b0\u01a1ng nh\u01b0 v\u1eady kh\u00f4ng ch\u1ec9 c\u00f3 \u0111\u1ed9 kho\u1ebb, m\u00e0 c\u00f2n gi\u1ea3m b\u1edbt tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a c\u01a1 th\u1ec3. Ngo\u00e0i ra, c\u00f3 m\u1ed9t s\u1ed1 r\u1ed3ng c\u00f3 c\u00e1nh to\u00e0n th\u00e2n kho\u00e1c b\u1ed9 l\u00f4ng, c\u00f3 \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n c\u00e1ch nhi\u1ec7t, v\u00ec v\u1eady, h\u1ea7u nh\u01b0 t\u1ea5t c\u1ea3 nh\u1eefng ng\u01b0\u1eddi nghi\u00ean c\u1ee9u v\u1ec1 r\u1ed3ng c\u00f3 c\u00e1nh \u0111\u1ec1u cho r\u1eb1ng, r\u1ed3ng c\u00f3 c\u00e1nh c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t lo\u00e0i \u0111\u1ed9ng v\u1eadt th\u00e2n nhi\u1ec7t \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u0103m 1984, c\u00e1c nh\u00e0 khoa h\u1ecdc \u1edf M\u0129 v\u00e0 Anh l\u1ea7n l\u01b0\u1ee3t m\u00f4 ph\u1ecfng ch\u1ebf t\u1ea1o m\u1ed9t con r\u1ed3ng c\u00f3 c\u00e1nh, v\u00e0 \u0111\u00e3 \u0111\u01b0a n\u00f3 bay l\u01b0\u1ee3n tr\u00ean b\u1ea7u tr\u1eddi m\u1ed9t c\u00e1ch th\u00e0nh c\u00f4ng, l\u1ea7n th\u1eed nghi\u1ec7m n\u00e0y \u0111\u00e3 ch\u1ee9ng minh r\u1ed3ng c\u00f3 c\u00e1nh tuy th\u00e2n h\u00ecnh to l\u1edbn, nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 bay l\u01b0\u1ee3n t\u1ef1 do tr\u00ean kh\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c nh\u00e0 khoa h\u1ecdc c\u0103n c\u1ee9 v\u00e0o ho\u00e1 th\u1ea1ch \u0111\u00e3 \u0111\u01b0\u1ee3c khai qu\u1eadt, ph\u00e1t hi\u1ec7n ra, r\u1ed3ng c\u00f3 c\u00e1nh c\u1ed5 x\u01b0a nh\u1ea5t l\u00e0 r\u1ed3ng c\u00f3 r\u0103ng h\u00ecnh ch\u1ea5n song, sinh s\u1ed1ng v\u00e0o giai \u0111o\u1ea1n cu\u1ed1i k\u1ec9 Tam \u0111i\u1ec7p trong \u0111\u1ea1i Trung sinh 200 tri\u1ec7u n\u0103m tr\u01b0\u1edbc, ch\u00fang c\u00f3 \u0111u\u00f4i d\u00e0i. \u0110\u1ebfn th\u1eddi k\u00ec gi\u1eefa k\u1ec9 Jura, m\u1ed9t lo\u1ea1i r\u1ed3ng c\u00f3 c\u00e1nh m\u1edbi kh\u00f4ng c\u00f3 \u0111u\u00f4i xu\u1ea5t hi\u1ec7n &#8211; \u0111\u00f3 l\u00e0 d\u1ef1c th\u1ee7 long (r\u1ed3ng c\u00e1nh bay). Hai lo\u1ea1i r\u1ed3ng c\u00f3 c\u00e1nh n\u00e0y c\u00f9ng t\u1ed3n t\u1ea1i \u0111\u1ebfn giai \u0111o\u1ea1n cu\u1ed1i k\u1ec9 Jura, r\u1ed3ng c\u00f3 r\u0103ng h\u00ecnh ch\u1ea5n song d\u1ea7n d\u1ea7n b\u1ecb tuy\u1ec7t ch\u1ee7ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ec9 Kr\u00eata ti\u1ebfp theo \u0111\u00e3 tr\u1edf th\u00e0nh th\u1ebf gi\u1edbi c\u1ee7a d\u1ef1c th\u1ee7 long. Nh\u01b0ng d\u1ef1c th\u1ee7 long c\u0169ng ch\u1eb3ng t\u1ed3n t\u1ea1i tr\u00ean th\u1ebf gi\u1edbi n\u00e0y \u0111\u01b0\u1ee3c bao l\u00e2u, \u0111\u1ebfn th\u1eddi k\u00ec cu\u1ed1i k\u1ec9<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kr\u00eata (65 tri\u1ec7u n\u0103m tr\u01b0\u1edbc), to\u00e0n b\u1ed9 lo\u1ea1i r\u1ed3ng c\u00f3 c\u00e1nh \u0111\u1ec1u bi\u1ebfn m\u1ea5t, v\u00e0 \u0111\u1ec3 l\u1ea1i cho kh\u00f4ng gian r\u1ed9ng l\u1edbn nh\u1eefng lo\u1ea1i c\u00f4n tr\u00f9ng v\u00e0 sau \u0111\u00f3 l\u00e0 lo\u00e0i chim xu\u1ea5t hi\u1ec7n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi kh\u1ee7ng long \u1edf tr\u00ean Tr\u00e1i \u0110\u1ea5t c\u00f2n x\u01b0ng v\u01b0\u01a1ng x\u01b0ng b\u00e1, c\u00f3 m\u1ed9t lo\u00e0i \u0111\u1ed9ng v\u1eadt b\u00f2 s\u00e1t g\u1ecdi l\u00e0 r\u1ed3ng c\u00f3 c\u00e1nh \u0111\u00e3 chi\u1ebfm gi\u1eef m\u1ed9t kh\u00f4ng gian r\u1ed9ng l\u1edbn. Trong t\u01b0\u1edfng t\u01b0\u1ee3ng c\u1ee7a ch\u00fang ta, c\u01a1 th\u1ec3 c\u1ee7a kh\u1ee7ng long r\u1ea5t to l\u1edbn, cho d\u00f9 l\u00e0 b\u00f2 tr\u00ean m\u1eb7t \u0111\u1ea5t c\u0169ng kh\u00f4ng [&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-8449","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\/8449","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=8449"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8449\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}