6 đề thi kỳ 2 lý 8(Tự luận)
Chia sẻ bởi Trần Văn Mạnh |
Ngày 14/10/2018 |
41
Chia sẻ tài liệu: 6 đề thi kỳ 2 lý 8(Tự luận) thuộc Vật lí 8
Nội dung tài liệu:
KIỂM TRA CHẤT LƯỢNG HỌC KỲ II
NĂM HỌC 2011-2012 (Đề 1)
Họ và Tên : ...................................................................Lớp: ........................
Câu 1:
lượng là gì ? Viết công thức ?Nêu tên và đơn vị của từng đại lượng có trong công thức ?(2 điểm ).
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Một ấm đun nước bằng nhôm có khối lượng 0,5 kg chứa 2 lít nước ở 25oC .Muốn đun sôi ấm nước này cần một nhiệt lượng bằng bao nhiêu ?( cho biết nhiệt dung riêng của nhôm 880J/kg.K, của nước là 4200 J/kg.K (2 điểm ).
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Câu 2 : (2 điểm )
Nung một miếng đồng rồi thả vào cốc nước lạnh .Hỏi nhiệt năng của miếng đồng và
của nước thay đổi như thế nào ?Đây là thực hiện công hay truyền nhiệt ?
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Câu 3 : (4 điểm ).
Dẫn nhiệt là gì ? Tính dẫn nhiệt của các chất ? (3 điểm )
Tại sao nồi, xoong thường làm bằng kim loại ,còn bát đĩa thường làm bằng sứ ?
(1 điểm )
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KIỂM TRA CHẤT LƯỢNG HỌC KỲ II
NĂM HỌC 2011-2012 (Đề 2)
Họ và Tên : ...................................................................Lớp: ........................
Câu 1:
Đối lưu là gì ? Đối là hình thức truyền nhiệt chủ yếu trong các môi trường nào ? Nêu cách làm giảm sự đối lưu trong các môi trường (2 điểm ).
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Một ấm đun nước bằng nhôm có khối lượng 300g chứa 3,5 lít nước ở 24 oC .Khi đun ấm bằng nhiệt lượng 912804J thì nhiệt độ của nước tăng lên bao nhiêu độ C ?( cho biết nhiệt dung riêng của nhôm 880J/kg.K, của nước là 4200 J/kg.K (2 điểm ).
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Câu 2 : (2 điểm )
Đổ một cốc nước nóng vào cốc nước lạnh .Hỏi nhiệt năng của cốc nước nóng và cốc nước lạnh thay đổi như thế nào ?Đây là thực hiện công hay truyền nhiệt ?
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Câu 3 : (4 điểm ).
Bức xạ nhiệt là gì ? Bức xạ nhiệt không xảy ra ở môi trường nào ? Nêu các cách ngăn cản bức xạ nhiệt ? (3 điểm )
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KIỂM TRA CHẤT LƯỢNG HỌC KỲ II
NĂM HỌC 2011-2012 (Đề 3)
Họ và Tên : ..............................................................................................................................Lớp: ........................
Câu 1:
a) Đối lưu là gì ? Giải thích sự tạo thành gió trong khí quyển (2 điểm ).
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b) Một ấm đun nước bằng Đồng có khối lượng 0,7g chứa 3,2 lít nước ở 21 oC .Khi đun ấm bằng nhiệt lượng 1055362J thì nhiệt độ của nước tăng lên bao nhiêu độ C ?( cho biết nhiệt dung riêng của nhôm 380J/kg.K, của nước là 4200 J/kg.K (2 điểm ).
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Câu 2 : (2 điểm )
Để một cốc nước nóng trên bàn, sau một thời gian cốc nước nguội dần. Hãy giải thích hiện tượng trên bằng truyền nhiệt ?
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Câu 3 : (4 điểm ).
Bức xạ nhiệt là gì ? Những vật có đặc điểm như thế nào thì nóng nhanh nhờ bức xạ nhiệt ? (3 điểm )
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KIỂM TRA CHẤT LƯỢNG HỌC KỲ II
NĂM HỌC 2011-2012 (Đề 4)
Họ và Tên : ...................................................................Lớp: ........................
Câu 1:
a) lượng là gì ? Viết công thức ?Nêu tên và đơn vị của từng đại lượng có trong công thức ?(2 điểm ).
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b) Một ấm đun nước bằng nhôm có khối lượng 550 g
NĂM HỌC 2011-2012 (Đề 1)
Họ và Tên : ...................................................................Lớp: ........................
Câu 1:
lượng là gì ? Viết công thức ?Nêu tên và đơn vị của từng đại lượng có trong công thức ?(2 điểm ).
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Một ấm đun nước bằng nhôm có khối lượng 0,5 kg chứa 2 lít nước ở 25oC .Muốn đun sôi ấm nước này cần một nhiệt lượng bằng bao nhiêu ?( cho biết nhiệt dung riêng của nhôm 880J/kg.K, của nước là 4200 J/kg.K (2 điểm ).
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Câu 2 : (2 điểm )
Nung một miếng đồng rồi thả vào cốc nước lạnh .Hỏi nhiệt năng của miếng đồng và
của nước thay đổi như thế nào ?Đây là thực hiện công hay truyền nhiệt ?
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Câu 3 : (4 điểm ).
Dẫn nhiệt là gì ? Tính dẫn nhiệt của các chất ? (3 điểm )
Tại sao nồi, xoong thường làm bằng kim loại ,còn bát đĩa thường làm bằng sứ ?
(1 điểm )
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KIỂM TRA CHẤT LƯỢNG HỌC KỲ II
NĂM HỌC 2011-2012 (Đề 2)
Họ và Tên : ...................................................................Lớp: ........................
Câu 1:
Đối lưu là gì ? Đối là hình thức truyền nhiệt chủ yếu trong các môi trường nào ? Nêu cách làm giảm sự đối lưu trong các môi trường (2 điểm ).
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Một ấm đun nước bằng nhôm có khối lượng 300g chứa 3,5 lít nước ở 24 oC .Khi đun ấm bằng nhiệt lượng 912804J thì nhiệt độ của nước tăng lên bao nhiêu độ C ?( cho biết nhiệt dung riêng của nhôm 880J/kg.K, của nước là 4200 J/kg.K (2 điểm ).
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Câu 2 : (2 điểm )
Đổ một cốc nước nóng vào cốc nước lạnh .Hỏi nhiệt năng của cốc nước nóng và cốc nước lạnh thay đổi như thế nào ?Đây là thực hiện công hay truyền nhiệt ?
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Câu 3 : (4 điểm ).
Bức xạ nhiệt là gì ? Bức xạ nhiệt không xảy ra ở môi trường nào ? Nêu các cách ngăn cản bức xạ nhiệt ? (3 điểm )
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KIỂM TRA CHẤT LƯỢNG HỌC KỲ II
NĂM HỌC 2011-2012 (Đề 3)
Họ và Tên : ..............................................................................................................................Lớp: ........................
Câu 1:
a) Đối lưu là gì ? Giải thích sự tạo thành gió trong khí quyển (2 điểm ).
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b) Một ấm đun nước bằng Đồng có khối lượng 0,7g chứa 3,2 lít nước ở 21 oC .Khi đun ấm bằng nhiệt lượng 1055362J thì nhiệt độ của nước tăng lên bao nhiêu độ C ?( cho biết nhiệt dung riêng của nhôm 380J/kg.K, của nước là 4200 J/kg.K (2 điểm ).
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Câu 2 : (2 điểm )
Để một cốc nước nóng trên bàn, sau một thời gian cốc nước nguội dần. Hãy giải thích hiện tượng trên bằng truyền nhiệt ?
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Câu 3 : (4 điểm ).
Bức xạ nhiệt là gì ? Những vật có đặc điểm như thế nào thì nóng nhanh nhờ bức xạ nhiệt ? (3 điểm )
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KIỂM TRA CHẤT LƯỢNG HỌC KỲ II
NĂM HỌC 2011-2012 (Đề 4)
Họ và Tên : ...................................................................Lớp: ........................
Câu 1:
a) lượng là gì ? Viết công thức ?Nêu tên và đơn vị của từng đại lượng có trong công thức ?(2 điểm ).
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b) Một ấm đun nước bằng nhôm có khối lượng 550 g
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