KT ly 6 hk 2

Đề kiểm tra chất lợng học kỳ II Năm học 2006 2007
Môn : Vật lý lớp 6 Thời gian 45
Họ và tên : Lớp .
I ) Trắc nghiệm ( 6 điểm )
Câu 1 ) Khoanh tròn chữ cái đứng trớc câu trả lời đúng :
1) Hiện tợng nào sau đây sẽ xảy ra khi nung nóng một vật rắn ?
A / Khối lợng của vật tăng C / Khối lợng riêng của vật tăng
B / Khối lợng của vật giảm D / Khối lợng riêng của vật giảm
2 ) Một lọ thuỷ tinh đợc đậy bằng nút thuỷ tinh ( nút trùm ra ngoài cổ lọ ) . Nút bị kẹt . Hỏi phải mở
nút bằng cách nào trong các cách sau đây ?
A / Hơ nóng đáy lọ C / Hơ nóng cổ lọ
B / Hơ nóng cả nút và cổ lọ D / Hơ nóng nút
3 ) Trong các cách sắp xếp các chất nở vì nhiệt từ nhiều tới ít sau đây , cách sắp xếp nào là đúng ?
A / Khí , lỏng , rắn C / Rắn , khí , lỏng
B / Khí , rắn , lỏng D / Rắn , lỏng , khí
4 ) Nhiệt kế nào trong các nhiệt kế sau đây có thể dùng để đo nhiệt độ của hơi nớc đang sôi ?
A / Nhiệt kế y tế C / Nhiệt kế thuỷ ngân
B / Nhiệt kế rợu D / Cả ba loại trên đều đúng
Câu 2 ) Điền từ thích hợp vào chỗ (.)
1 ) Tên gọi của các sự chuyển thể của các chất ứng với các chiều mũi tên
(1) (2)...
(3) (4)...
2 ) Các chất rắn , lỏng , khí (5) .khi nóng lên , co lại khi (6) .
3 ) Trong thời gian nóng chảy ( hay đông đặc ) nhiệt độ của vật (7) ..
II ) Tự luận ( 4 điểm )
Câu 1 ) Sử dụng số liệu trong bảng để trả lời các câu hỏi sau đây :
A ) Chất nào có nhiệt độ nóng chảy cao nhất ?
B / Chất nào có nhiệt độ nóng chảy thấp nhất ?
C / ở nhiệt độ 28
0C
, các chất nào có trong bảng trên tồn tại ở thể rắn ?

D / ở nhiệt độ 2
0C
các chất nào có trong bảng trên tồn tại ở thể lỏng ?
Câu 2 ) Hình vẽ sau vẽ đờng biểu diễn sự thay đổi nhiệt độ theo thời gian của một chất (A)
Nhiệt độ (

o
C
)

100 - - - - - - - - - --
Chất Nhiệt độ nóng chảy (0
0
)
Nhôm 660
Nớc đá 0
Rợu - 117
Sắt 1535
Đồng 1083
Thuỷ ngân - 39
Muối ăn 801
Thể rắn
Thể lỏng
Thể khí
50
0 B H
C G Thời gian
- 50 I
A / Chất ( A ) là chất gì ?
B / ở nhiệt độ nào thì chất ( A ) bắt đầu nóng chảy ?

C / Chất ( A ) sôi ở nhiệt độ nào ?
D / Các đoạn BC , DE , GH , ứng với các quá trình nào ?
E / Trong các đoạn AB , DE , GH , HI , chất đó tồn tại ở những thể nào ?
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