Năng lượng nhiệt và nội năng

Home Lớp 8 Khoa học tự nhiên 8 - sách Kết nối tri thức Bài 26: Năng lượng nhiệt và nội năngBài tập trung bình

{"common":{"save":0,"post_id":"9230","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9797","post_id":"9230","mon_id":"1159539","chapter_id":"1160023","question":"Khi \u0111un n\u01b0\u1edbc trong \u1ea5m, nhi\u1ec7t \u0111\u1ed9 n\u01b0\u1edbc t\u0103ng lên. Hi\u1ec7n t\u01b0\u1ee3ng này ch\u1ee9ng t\u1ecf \u0111i\u1ec1u gì?<\/p>","options":["A. Nhi\u1ec7t l\u01b0\u1ee3ng không làm thay \u0111\u1ed5i n\u1ed9i n\u0103ng","B. Truy\u1ec1n nhi\u1ec7t làm t\u0103ng n\u1ed9i n\u0103ng c\u1ee7a n\u01b0\u1edbc","C. Nhi\u1ec7t ch\u1ec9 làm t\u0103ng kh\u1ed1i l\u01b0\u1ee3ng n\u01b0\u1edbc","D. Nhi\u1ec7t làm gi\u1ea3m chuy\u1ec3n \u0111\u1ed9ng phân t\u1eed n\u01b0\u1edbc"],"correct":"2","level":"2","hint":"Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng → phân t\u1eed chuy\u1ec3n \u0111\u1ed9ng m\u1ea1nh h\u01a1n.<\/p>","answer":"\u0110áp án \u0111úng là: B. Truy\u1ec1n nhi\u1ec7t làm t\u0103ng n\u1ed9i n\u0103ng c\u1ee7a n\u01b0\u1edbc<\/strong> Gi\u1ea3i thích:<\/strong><\/p>Nhi\u1ec7t truy\u1ec1n t\u1eeb b\u1ebfp sang n\u01b0\u1edbc → phân t\u1eed n\u01b0\u1edbc chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n → n\u1ed9i n\u0103ng t\u0103ng.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"0","date":"2025-05-11 10:36:13","option_type":"txt","len":3},{"id":"9798","post_id":"9230","mon_id":"1159539","chapter_id":"1160023","question":"Hai v\u1eadt có cùng kh\u1ed1i l\u01b0\u1ee3ng và ch\u1ea5t li\u1ec7u, nh\u01b0ng v\u1eadt A có nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n v\u1eadt B. K\u1ebft lu\u1eadn nào sau \u0111ây \u0111úng?<\/p>","options":["A. V\u1eadt A có n\u1ed9i n\u0103ng th\u1ea5p h\u01a1n v\u1eadt B","B. V\u1eadt A có n\u1ed9i n\u0103ng b\u1eb1ng v\u1eadt B","C. V\u1eadt A có n\u1ed9i n\u0103ng cao h\u01a1n v\u1eadt B","D. Không th\u1ec3 so sánh n\u1ed9i n\u0103ng c\u1ee7a hai v\u1eadt"],"correct":"3","level":"2","hint":"N\u1ed9i n\u0103ng ph\u1ee5 thu\u1ed9c nhi\u1ec7t \u0111\u1ed9 và kh\u1ed1i l\u01b0\u1ee3ng.<\/p>","answer":"\u0110áp án \u0111úng là: C. V\u1eadt A có n\u1ed9i n\u0103ng cao h\u01a1n v\u1eadt B<\/strong> Gi\u1ea3i thích:<\/strong><\/p>Cùng ch\u1ea5t, cùng kh\u1ed1i l\u01b0\u1ee3ng → nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n → n\u1ed9i n\u0103ng l\u1edbn h\u01a1n.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"0","date":"2025-05-11 10:37:20","option_type":"txt","len":3},{"id":"9799","post_id":"9230","mon_id":"1159539","chapter_id":"1160023","question":"M\u1ed9t mi\u1ebfng kim lo\u1ea1i \u0111\u01b0\u1ee3c nung nóng. K\u1ebft lu\u1eadn nào sau \u0111ây là \u0111úng v\u1ec1 n\u1ed9i n\u0103ng c\u1ee7a nó?<\/p>","options":["A. Không \u0111\u1ed5i vì kh\u1ed1i l\u01b0\u1ee3ng không \u0111\u1ed5i","B. Gi\u1ea3m vì kh\u1ed1i l\u01b0\u1ee3ng gi\u1ea3m","C. T\u0103ng do phân t\u1eed chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n","D. Gi\u1ea3m do nhi\u1ec7t thoát ra ngoài"],"correct":"3","level":"2","hint":"N\u1ed9i n\u0103ng thay \u0111\u1ed5i khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i.<\/p>","answer":"\u0110áp án \u0111úng là: C. T\u0103ng do phân t\u1eed chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n<\/strong> Gi\u1ea3i thích:<\/strong><\/p>Nhi\u1ec7t \u0111\u1ed9 t\u0103ng → \u0111\u1ed9ng n\u0103ng phân t\u1eed t\u0103ng → n\u1ed9i n\u0103ng t\u0103ng.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"0","date":"2025-05-11 10:38:16","option_type":"txt","len":3}]}