C\u00e2u 1 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0H\u1ec7 m\u1eb7t tr\u1eddi bao g\u1ea7m c\u00e1c lo\u1ea1i thi\u00ean th\u1ec3 n\u00e0o?<\/span><\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n H\u1ec7 m\u1eb7t tr\u1eddi bao g\u1ea7m: m\u1eb7t tr\u1eddi, 8 h\u00e0nh tinh v\u00e0 v\u1ec7 tinh, c\u00e1c ti\u1ec3u h\u00e0nh tinh, thi\u00ean th\u1ea1ch, sao ch\u1ed5i.<\/p>\n C\u00e2u 2 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0N\u00eau v\u1eafn t\u1eaft c\u1ea5u tr\u00fac c\u1ee7a m\u1eb7t tr\u1eddi.<\/span><\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n M\u1eb7t tr\u1eddi bao g\u1ed3m hai ph\u1ea7n ch\u00ednh:<\/p>\n + Quang c\u1ea7u: l\u00f5i c\u1ee7a m\u1eb7t tr\u1eddi l\u00e0 kh\u1ed1i c\u1ea7u n\u00f3ng s\u00e1ng, b\u00e1n k\u00ednh 7.105<\/sup>\u00a0km, kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang 1400kg\/m3<\/sup>, nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t 60000<\/sup>\u00a0K.<\/p>\n + Kh\u00ed quy\u1ec3n M\u1eb7t tr\u1eddi: c\u1ea5u t\u1ea1o ch\u1ee7 y\u1ebft t\u1eeb hidro, heli \u0111\u01b0\u1ee3c ph\u00e2n ra hai l\u1edbp l\u00e0 s\u1eafc c\u1ea7u v\u00e0 nh\u1eadt hoa.<\/p>\n C\u00e2u 3 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0N\u00eau v\u1eafn t\u1eaft s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1eb7t tr\u1eddi v\u00e0 c\u00e1c t\u00e1c \u0111\u1ed9ng ch\u00ednh c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi Tr\u00e1i \u0110\u1ea5t.<\/span><\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n S\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1eb7t tr\u1eddi v\u00e0 c\u00e1c t\u00e1c \u0111\u1ed9ng ch\u00ednh c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi Tr\u00e1i \u0110\u1ea5t.<\/p>\n + M\u1eb7t Tr\u1eddi s\u00e1ng kh\u00f4ng \u0111\u1ec1u, do s\u1ef1 \u0111\u1ed1i l\u01b0u t\u1eeb trong l\u00f2ng m\u1eb7t tr\u1eddi m\u00e0 th\u00e0nh nh\u01b0: V\u1ebft \u0111en, b\u00f9ng s\u00e1ng, tai l\u1eeda.<\/p>\n + T\u00f9y theo s\u1ef1 xu\u1ea5t hi\u1ec7n nhi\u1ec1u hay \u00edt v\u1ebft \u0111en m\u00e0 chia th\u00e0nh : N\u0103m m\u1eb7t tr\u1eddi ho\u1ea1t \u0111\u1ed9ng hay n\u0103m M\u1eb7t Tr\u1eddi t\u0129nh, c\u00f3 chu k\u00ec kho\u1ea3ng 11 n\u0103m.<\/p>\n C\u00e2u 4 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0N\u00eau m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a Tr\u00e1i \u0110\u1ea5t v\u00e0 M\u1eb7t Tr\u0103ng.<\/span><\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n a) Tr\u00e1i \u0110\u1ea5t<\/p>\n Tr\u00e1i \u0111\u1ea5t chuy\u1ec3n \u0111\u1ed9ng quanh M\u1eb7t Tr\u1eddi theo m\u1ed9t qu\u1ef9 \u0111\u1ea1o g\u1ea7n tr\u00f2n, tr\u1ee5c quay c\u1ee7a Tr\u00e1i \u0110\u1ea5t quanh m\u00ecnh n\u00f3 nghi\u00eang tr\u00ean m\u1eb7t ph\u1eb3ng qu\u1ef9 \u0111\u1ea1o m\u1ed9t g\u00f3c 230<\/sup>\u00a027′.<\/p>\n Tr\u00e1i \u0110\u1ea5t c\u00f3 d\u1ea1ng ph\u1ecfng c\u1ea7u ( h\u01a1i d\u1eb9t \u1edf hai c\u1ef1c), b\u00e1n k\u00ednh \u1edf x\u00edch \u0111\u1ea1o bang 6378 km. b\u00e1n k\u00ednh \u1edf hai c\u1ef1c bang 6357 km. Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang trung b\u00ecnh l\u00e0 5520 kg\/m3<\/sup>.<\/p>\n b) M\u1eb7t Tr\u0103ng<\/p>\n M\u1eb7t Tr\u0103ng l\u00e0 v\u1ec7 tinh c\u1ee7a Tr\u00e1i \u0110\u1ea5t c\u00e1ch Tr\u00e1i \u0110\u1ea5t 384000 km c\u00f3 b\u00e1n k\u00ednh 1738 km, c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng 7,35.1022<\/sup>\u00a0kg. Gia t\u1ed1c tr\u1ecdng tr\u01b0\u1eddng tr\u00ean M\u1eb7t Tr\u0103ng l\u00e0 1,63 m\/s2<\/sup>. M\u1eb7t Tr\u0103ng chuy\u1ec3n \u0111\u1ed9ng quanh Tr\u00e1i \u0110\u1ea5t v\u1edbi chu k\u00ec 27,32 ng\u00e0y.<\/p>\n Do l\u1ef1c h\u1ea5p d\u1eabn b\u00e9 n\u00ean M\u1eb7t Tr\u0103ng kh\u00f4ng gi\u1eef \u0111\u01b0\u1ee3c kh\u00ed quy\u1ec3n. N\u00f3i c\u00e1ch kh\u00e1c, tr\u00ean M\u1eb7t Tr\u0103ng kh\u00f4ng c\u00f3 kh\u00ed quy\u1ec3n.<\/p>\n B\u00c0I T\u1eacP<\/strong><\/p>\n B\u00e0i 1 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0\u0110\u01b0\u1eddng k\u00ednh Tr\u00e1i \u0110\u1ea5t \u1edf x\u00edch \u0111\u1ea1o c\u00f3 gi\u00e1 tr\u1ecb n\u00e0o sau \u0111\u00e2y?<\/span><\/p>\n A. 1600 km<\/p>\n B. 3200 km<\/p>\n C. 6400 km<\/p>\n D. 12756 km<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n Ch\u1ecdn D.<\/p>\n B\u00e0i 2 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):<\/b>\u00a0Tr\u00e1i \u0110\u1ea5t chuy\u1ec3n \u0111\u1ed9ng quanh M\u1eb7t Tr\u1eddi theo qu\u1ef9 \u0111\u1ea1o g\u1ea7n tr\u00f2n c\u00f3 b\u00e1n k\u00ednh v\u00e0o kho\u1ea3ng.<\/span><\/p>\n A. 5.105<\/sup>\u00a0km.<\/p>\n B. 15.107<\/sup>\u00a0km.<\/p>\n C. 15.108<\/sup>\u00a0km.<\/p>\n D. 15.109<\/sup>\u00a0km.<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n Ch\u1ecdn D.<\/p>\n","protected":false},"excerpt":{"rendered":" C\u00e2u 1 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):\u00a0H\u1ec7 m\u1eb7t tr\u1eddi bao g\u1ea7m c\u00e1c lo\u1ea1i thi\u00ean th\u1ec3 n\u00e0o? L\u1eddi gi\u1ea3i: H\u1ec7 m\u1eb7t tr\u1eddi bao g\u1ea7m: m\u1eb7t tr\u1eddi, 8 h\u00e0nh tinh v\u00e0 v\u1ec7 tinh, c\u00e1c ti\u1ec3u h\u00e0nh tinh, thi\u00ean th\u1ea1ch, sao ch\u1ed5i. C\u00e2u 2 (trang 305 sgk V\u1eadt L\u00ed 12 n\u00e2ng cao):\u00a0N\u00eau v\u1eafn t\u1eaft c\u1ea5u […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1304],"tags":[1432,1431],"yoast_head":"\n