GIẢI SGK KHTN 6 bộ KNTT VỚI CUỘC SỐNG

["C\u00e1c h\u00ecnh d\u1ea1ng c\u1ee7a M\u1eb7t Tr\u0103ng v\u00e0o ban \u0111\u00eam: Tr\u0103ng tr\u00f2n, Tr\u0103ng khuy\u1ebft, Tr\u0103ng b\u00e1n nguy\u1ec7t, Tr\u0103ng l\u01b0\u1ee1i li\u1ec1m, Kh\u00f4ng tr\u0103ng. Ch\u00fang ta nh\u00ecn th\u1ea5y M\u1eb7t Tr\u0103ng c\u00f3 h\u00ecnh d\u1ea1ng kh\u00e1c nhau do ph\u1ea7n b\u1ec1 m\u1eb7t M\u1eb7t Tr\u0103ng h\u01b0\u1edbng v\u1ec1 ph\u00eda Tr\u00e1i \u0110\u1ea5t m\u00e0 \u1edf Tr\u00e1i \u0110\u1ea5t nh\u00ecn th\u1ea5y, \u0111\u01b0\u1ee3c m\u1eb7t tr\u1eddi chi\u1ebfu s\u00e1ng c\u00f3 di\u1ec7n t\u00edch kh\u00e1c nhau m\u1ed7i khi \u0111\u01b0\u1ee3c chi\u1ebfc s\u00e1ng. I. M\u1eb7t Tr\u0103ng v\u00e0 c\u00e1c h\u00ecnh d\u1ea1ng nh\u00ecn th\u1ea5y 1. Em c\u00f3 nh\u1eadn x\u00e9t g\u00ec v\u1ec1 Tr\u0103ng khuy\u1ebft \u1edf n\u1eeda \u0111\u1ea7u th\u00e1ng v\u00e0 \u1edf n\u1eeda cu\u1ed1i th\u00e1ng. 2. Gi\u1eefa hai l\u1ea7n Tr\u0103ng tr\u00f2n li\u00ean ti\u1ebfp c\u00e1ch nhau bao nhi\u00eau tu\u1ea7n? B\u00e0i l\u00e0m: 1. Gi\u1ed1ng nhau: H\u00ecnh d\u1ea1ng \u0111\u1ec1u l\u00e0 Tr\u0103ng khuy\u1ebft Kh\u00e1c nhau: Tr\u00ean h\u00e0nh tr\u00ecnh \u0111\u1ebfn tr\u0103ng tr\u00f2n, ch\u00fang ta s\u1ebd th\u1ea5y t\u1ef7 l\u1ec7 l\u1edbn d\u1ea7n l\u00ean t\u1eeb tr\u0103ng khuy\u1ebft \u0111\u1ea7u th\u00e1ng \u1edf n\u1eeda \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng c\u1ee7a m\u1eb7t tr\u0103ng, v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tr\u0103ng tr\u00f2n d\u1ea7n. Khi chuy\u1ec3n t\u1eeb tr\u0103ng tr\u00f2n \u0111\u1ebfn tr\u0103ng khuy\u1ebft cu\u1ed1i th\u00e1ng, ch\u00fang ta s\u1ebd nh\u00ecn th\u1ea5y t\u1ef7 l\u1ec7 nh\u1ecf d\u1ea7n \u0111i \u1edf ph\u1ea7n \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng c\u1ee7a m\u1eb7t tr\u0103ng; hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tr\u0103ng khuy\u1ebft d\u1ea7n. 2. Gi\u1eefa hai l\u1ea7n Tr\u0103ng tr\u00f2n li\u00ean ti\u1ebfp c\u00e1ch nhau 4 tu\u1ea7n. B\u00e0i l\u00e0m: 1. Gi\u1ed1ng nhau: H\u00ecnh d\u1ea1ng \u0111\u1ec1u l\u00e0 Tr\u0103ng khuy\u1ebft Kh\u00e1c nhau: Tr\u00ean h\u00e0nh tr\u00ecnh \u0111\u1ebfn tr\u0103ng tr\u00f2n, ch\u00fang ta s\u1ebd th\u1ea5y t\u1ef7 l\u1ec7 l\u1edbn d\u1ea7n l\u00ean t\u1eeb tr\u0103ng khuy\u1ebft \u0111\u1ea7u th\u00e1ng \u1edf n\u1eeda \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng c\u1ee7a m\u1eb7t tr\u0103ng, v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tr\u0103ng tr\u00f2n d\u1ea7n. Khi chuy\u1ec3n t\u1eeb tr\u0103ng tr\u00f2n \u0111\u1ebfn tr\u0103ng khuy\u1ebft cu\u1ed1i th\u00e1ng, ch\u00fang ta s\u1ebd nh\u00ecn th\u1ea5y t\u1ef7 l\u1ec7 nh\u1ecf d\u1ea7n \u0111i \u1edf ph\u1ea7n \u0111\u01b0\u1ee3c chi\u1ebfu s\u00e1ng c\u1ee7a m\u1eb7t tr\u0103ng; hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 tr\u0103ng khuy\u1ebft d\u1ea7n. 2. Gi\u1eefa hai l\u1ea7n Tr\u0103ng tr\u00f2n li\u00ean ti\u1ebfp c\u00e1ch nhau 4 tu\u1ea7n. II. Gi\u1ea3i th\u00edch s\u1ef1 kh\u00e1c nhau v\u1ec1 h\u00ecnh d\u1ea1ng nh\u00ecn th\u1ea5y c\u1ee7a M\u1eb7t Tr\u0103ng (c\u00e1c pha c\u1ee7a M\u1eb7t Tr\u0103ng) M\u1eb7t Tr\u0103ng quay quanh Tr\u00e1i \u0110\u1ea5t, m\u1ea5t kho\u1ea3ng m\u1ed9t th\u00e1ng \u0111\u1ec3 \u0111i h\u1ebft m\u1ed9t v\u00f2ng. ? V\u1ebd m\u1ed9t s\u01a1 \u0111\u1ed3 cho th\u1ea5y v\u1ecb tr\u00ed c\u1ee7a M\u1eb7t Tr\u1eddi, M\u1eb7t Tr\u0103ng v\u00e0 Tr\u00e1i \u0110\u1ea5t khi ta quan s\u00e1t th\u1ea5y b\u00e1n nguy\u1ec7t. B\u00e0i l\u00e0m: H\u1ecdc sinh t\u1ef1 v\u1ebd. H\u01b0\u1edbng d\u1eabn gi\u1ea3i b\u00e0i 54: H\u1ec7 M\u1eb7t Tr\u1eddi M\u1edf \u0111\u1ea7u Em \u0111\u00e3 bi\u1ebft Tr\u00e1i \u0110\u1ea5t quay quanh M\u1eb7t Tr\u1eddi, M\u1eb7t Tr\u0103ng quay quanh Tr\u00e1i \u0110\u1ea5t. V\u1eady c\u00f2n nh\u1eefng thi\u00ean th\u1ec3 n\u00e0o kh\u00e1c quay quanh M\u1eb7t Tr\u1eddi kh\u00f4ng? Tr\u1ea3 l\u1eddi: C\u00f2n nhi\u1ec1u thi\u00ean th\u1ec3 quay quanh M\u1eb7t Tr\u1eddi: Th\u1ee7y Tinh, Kim Tinh, H\u1ecfa Tinh, ... I. H\u1ec7 M\u1eb7t Tr\u1eddi 1. H\u00e0nh tinh n\u00e0o g\u1ea7n M\u1eb7t Tr\u1eddi nh\u1ea5t, h\u00e0nh tinh n\u00e0o xa M\u1eb7t Tr\u1eddi nh\u1ea5t? 2. L\u1ef1c h\u1ea5p d\u1eabn g\u00e2y ra chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a t\u00e1m h\u00e0nh tinh xung quanh M\u1eb7t Tr\u1eddi ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 kho\u1ea3ng c\u00e1ch \u0111\u1ebfn M\u1eb7t Tr\u1eddi c\u1ee7a c\u00e1c h\u00e0nh tinh. Theo em d\u1ef1 \u0111o\u00e1n, th\u1eddi gian quay quanh M\u1eb7t Tr\u1eddi c\u1ee7a c\u00e1c h\u00e0nh tinh c\u00f3 gi\u1ed1ng nhau kh\u00f4ng? B\u00e0i l\u00e0m: TR\u1ea2 L\u1edcI C\u00c2U H\u1eceI SGK KHTN6 KNTT 101","1. Th\u1ee7y tinh g\u1ea7n M\u1eb7t Tr\u1eddi nh\u1ea5t, H\u1ea3i V\u01b0\u01a1ng tinh xa M\u1eb7t Tr\u1eddi nh\u1ea5t. 2. Th\u1eddi gian quay quanh M\u1eb7t Tr\u1eddi c\u1ee7a c\u00e1c h\u00e0nh tinh kh\u00f4ng gi\u1ed1ng nhau. II. C\u00e1c h\u00e0nh tinh c\u1ee7a H\u1ec7 M\u1eb7t Tr\u1eddi 1. C\u00e1c h\u00e0nh tinh v\u00f2ng trong c\u1ee7a h\u1ec7 M\u1eb7t Tr\u1eddi * C\u00e2u h\u1ecfi: Trong b\u1ed1n h\u00e0nh tinh v\u00f2ng trong c\u1ee7a h\u1ec7 M\u1eb7t Tr\u1eddi, m\u1ed9t ng\u00e0y c\u1ee7a h\u00e0nh tinh n\u00e0o c\u00f3 th\u1eddi gian g\u1ea7n b\u1eb1ng m\u1ed9t ng\u00e0y c\u1ee7a Tr\u00e1i \u0110\u1ea5t? B\u00e0i l\u00e0m: Trong b\u1ed1n h\u00e0nh tinh v\u00f2ng trong c\u1ee7a h\u1ec7 M\u1eb7t Tr\u1eddi, m\u1ed9t ng\u00e0y c\u1ee7a h\u1ecfa tinh c\u00f3 th\u1eddi gian g\u1ea7n b\u1eb1ng m\u1ed9t ng\u00e0y c\u1ee7a Tr\u00e1i \u0110\u1ea5t. 2. C\u00e1c h\u00e0nh tinh v\u00f2ng ngo\u00e0i c\u1ee7a h\u1ec7 M\u1eb7t Tr\u1eddi * C\u00e2u h\u1ecfi: C\u00e2u 1. Ng\u01b0\u1eddi ta v\u1eabn n\u00f3i sao H\u1ecfa, sao Kim sao Th\u1ed5, ... \u0111\u1ec1u l\u00e0 c\u00e1c ng\u00f4i sao trong h\u1ec7 M\u1eb7t Tr\u1eddi. N\u00f3i nh\u01b0 th\u1ebf \u0111\u00fang hay sai? T\u1ea1i sao? C\u00e2u 2. V\u00ec sao ta nh\u00ecn th\u1ea5y c\u00e1c h\u00e0nh tinh trong h\u1ec7 M\u1eb7t Tr\u1eddi? Em h\u00e3y gi\u1ea3i th\u00edch b\u1eb1ng h\u00ecnh v\u1ebd. C\u00e2u 3. N\u1ebfu nh\u01b0 em \u0111\u1ee9ng tr\u00ean H\u1ea3i V\u01b0\u01a1ng tinh, s\u1ebd nh\u00ecn th\u1ea5y M\u1eb7t Tr\u1eddi l\u1edbn h\u01a1n hay nh\u1ecf h\u01a1n so v\u1edbi khi \u1edf Tr\u00e1i \u0110\u1ea5t? B\u00e0i l\u00e0m: C\u00e2u 1. Ng\u01b0\u1eddi ta v\u1eabn n\u00f3i sao H\u1ecfa, sao Kim, sao Th\u1ed5, ... \u0111\u1ec1u l\u00e0 c\u00e1c ng\u00f4i sao trong h\u1ec7 M\u1eb7t Tr\u1eddi. N\u00f3i nh\u01b0 th\u1ebf l\u00e0 sai. V\u00ec ch\u00fang l\u00e0 c\u00e1c h\u00e0nh tinh ch\u1ee9 kh\u00f4ng ph\u1ea3i sao. C\u00e2u 2. Ta nh\u00ecn th\u1ea5y c\u00e1c h\u00e0nh tinh trong h\u1ec7 M\u1eb7t Tr\u1eddi v\u00ec ch\u00fang kh\u00f4ng th\u1ec3 t\u1ef1 ph\u00e1t s\u00e1ng nh\u01b0ng ch\u00fang nh\u1eadn \u0111\u01b0\u1ee3c \u00e1nh s\u00e1ng t\u1eeb M\u1eb7t Tr\u1eddi v\u00e0 ph\u1ea3n x\u1ea1 l\u1ea1i n\u00ean ta c\u00f3 th\u1ec3 th\u1ea5y ch\u00fang. C\u00e2u 3. N\u1ebfu nh\u01b0 em \u0111\u1ee9ng tr\u00ean H\u1ea3i V\u01b0\u01a1ng tinh, s\u1ebd nh\u00ecn th\u1ea5y M\u1eb7t Tr\u1eddi nh\u1ecf h\u01a1n so v\u1edbi khi \u1edf Tr\u00e1i \u0110\u1ea5t. V\u00ec Tr\u00e1i \u0110\u1ea5t g\u1ea7n M\u1eb7t Tr\u1eddi h\u01a1n H\u1ea3i V\u01b0\u01a1ng tinh H\u01b0\u1edbng d\u1eabn gi\u1ea3i b\u00e0i 55: Ng\u00e2n h\u00e0 M\u1edf \u0111\u1ea7u Em \u0111\u00e3 t\u1eebng nghe k\u1ec3 chuy\u1ec7n v\u1ec1 d\u1ea3i Ng\u00e2n H\u00e0 ch\u01b0a? Em nh\u00ecn th\u1ea5y d\u1ea3i Ng\u00e2n H\u00e0 khi n\u00e0o? Em c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 v\u1ec1 n\u00f3 kh\u00f4ng? Tr\u1ea3 l\u1eddi: Em \u0111\u00e3 t\u1eebng \u0111\u01b0\u1ee3c nghe chuy\u1ec7n v\u1ec1 d\u1ea3i Ng\u00e2n H\u00e0, em nh\u00ecn th\u1ea5y n\u00f3 tr\u00ean b\u00e1o v\u00e0 m\u1ea1ng internet. Ng\u00e2n H\u00e0 g\u1ed3m h\u00e0ng tr\u0103m t\u1ec9 thi\u00ean th\u1ec3 li\u00ean k\u1ebft v\u1edbi nhau b\u1eb1ng l\u1ef1c h\u1ea5p d\u1eabn. I. Ng\u00e2n H\u00e0 l\u00e0 g\u00ec? Theo em, d\u00f9ng t\u00ean Ng\u00e2n H\u00e0 \u0111\u1ec3 g\u1ecdi t\u1eadp h\u1ee3p c\u00e1c thi\u00ean th\u1ec3 trong \u0111\u00f3 c\u00f3 H\u1ec7 M\u1eb7t Tr\u1eddi c\u1ee7a ch\u00fang ta c\u00f3 ho\u00e0n to\u00e0n ch\u00ednh x\u00e1c kh\u00f4ng? T\u1ea1i sao? B\u00e0i l\u00e0m: D\u00f9ng t\u00ean Ng\u00e2n H\u00e0 \u0111\u1ec3 g\u1ecdi t\u1eadp h\u1ee3p c\u00e1c thi\u00ean th\u1ec3 trong \u0111\u00f3 c\u00f3 H\u1ec7 M\u1eb7t Tr\u1eddi c\u1ee7a ch\u00fang ta kh\u00f4ng ho\u00e0n to\u00e0n ch\u00ednh x\u00e1c. V\u00ec h\u1ec7 M\u1eb7t Tr\u1eddi c\u1ee7a ch\u00fang ta n\u1eb1m \u1edf g\u1ea7n r\u00eca c\u1ee7a m\u1ed9t trong 4 v\u00f2ng xo\u1eafn c\u1ee7a Ng\u00e2n H\u00e0 n\u00ean t\u1eeb Tr\u00e1i \u0110\u1ea5t ta ch\u1ec9 nh\u00ecn th\u1ea5y m\u1ed9t m\u1ea9u c\u1ee7a v\u00f2ng xo\u1eafn n\u00e0y v\u00e0 th\u1ea5y n\u00f3 gi\u1ed1ng m\u1ed9t d\u00f2ng s\u00f4ng. II. Ng\u00e2n H\u00e0 v\u00e0 H\u1ec7 M\u1eb7t Tr\u1eddi Theo em d\u1ea3i Ng\u00e2n H\u00e0 c\u00f3 chuy\u1ec3n \u0111\u1ed9ng tr\u00ean b\u1ea7u tr\u1eddi \u0111\u00eam nh\u01b0 c\u00e1c sao m\u00e0 ta nh\u00ecn th\u1ea5y kh\u00f4ng? B\u00e0i l\u00e0m: TR\u1ea2 L\u1edcI C\u00c2U H\u1eceI SGK KHTN6 KNTT 102","D\u1ea3i Ng\u00e2n H\u00e0 kh\u00f4ng chuy\u1ec3n \u0111\u1ed9ng tr\u00ean b\u1ea7u tr\u1eddi \u0111\u00eam nh\u01b0 c\u00e1c sao m\u00e0 ta nh\u00ecn th\u1ea5y. V\u00ec H\u1ec7 M\u1eb7t Tr\u1eddi c\u00f3 k\u00edch th\u01b0\u1edbc v\u00f4 c\u00f9ng nh\u1ecf b\u00e9 so v\u1edbi k\u00edch th\u01b0\u1edbc c\u1ee7a Ng\u00e2n H\u00e0. TR\u1ea2 L\u1edcI C\u00c2U H\u1eceI SGK KHTN6 KNTT 103"]