Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic molecular theory, in which gases are pictured as being made up of many small particles that are in ...
Đặng Bảo Trâm | Chat Online | |
03/09 18:47:01 (Tiếng Anh - Lớp 12) |
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42
In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion.
A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed. After a theory has been publicized, scientists design experiments to test the theory. If observations confirm the scientists' predictions, the theory is supported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected.
Science involves imagination and creative thinking as well as collecting information and performing experiments. Facts by themselves are not science. As the mathematician Jules Henri Poincare said: "Science is built with facts just as a house is built with bricks, but a collection of facts cannot be called science any more than a pile of bricks can be called a house."
Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible solutions to the problem are formulated. These possible solutions are called hypotheses. In a way, any hypothesis is a leap into the unknown. It extends the scientist's thinking beyond the known facts. The scientist plans experiments, performs calculations and makes observations to test hypotheses. For without hypotheses, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories
The word "supported" is closest in meaning to _______.
Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. upheld 0 % | 0 phiếu |
B. investigated 0 % | 0 phiếu |
C. finished 0 % | 0 phiếu |
D. adjusted 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42In science, a theory is a reasonable explanation of observed events that are related. A theory ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42In science, a theory is a reasonable explanation of observed events that are related. A theory ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42In science, a theory is a reasonable explanation of observed events that are related. A theory ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42In science, a theory is a reasonable explanation of observed events that are related. A theory ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35GIRLS' EDUCATION Improving girls' educational levels has been demonstrated to have clear ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35GIRLS' EDUCATION Improving girls' educational levels has been demonstrated to have clear ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35GIRLS' EDUCATION Improving girls' educational levels has been demonstrated to have clear ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35GIRLS' EDUCATION Improving girls' educational levels has been demonstrated to have clear ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35GIRLS' EDUCATION Improving girls' educational levels has been demonstrated to have clear ... (Tiếng Anh - Lớp 12)
- Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 26 to 30The United States of America, due to its immense size and diverse ... (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Cho hai đường tròn \[\left( {O;4{\rm{\;cm}}} \right)\] và \[\left( {O';3{\rm{\;cm}}} \right)\] biết \[OO' = 5{\rm{\;cm}}.\] Hai đường tròn trên cắt nhau tại \[A\] và \[B.\] Độ dài \[AB\] là (Toán học - Lớp 9)
- Trong một trò chơi, hai bạn Thủy và Tiến cùng chạy trên một đường tròn tâm \[O\] có bán kính \[20{\rm{\;m}}\] (hình vẽ).Độ dài dây \[AB\] nối vị trí của hai bạn đó không thể bằng bao nhiêu mét? (Toán học - Lớp 9)
- Cho đường tròn \[\left( {O;R} \right)\] có hai dây \[AB,CD\] vuông góc với nhau tại \[M.\] Giả sử \[AB = 16{\rm{\;cm}},CD = 12{\rm{\;cm}},MC = 2{\rm{\;cm}}.\] Kẻ \[OH \bot AB\] tại \[H,\] \[OK \bot CD\] tại \[K.\] Khi đó diện tích tứ giác \[OHMK\] ... (Toán học - Lớp 9)
- Cho đường tròn \(\left( {I;R} \right)\) có đường kính \[12{\rm{\;dm}}\] và đường tròn \(\left( {J;R'} \right)\) có đường kính \[18{\rm{\;dm}}.\] Nếu \(IJ = 15{\rm{\;dm}}\) thì hai đường tròn \[\left( I \right),\,\,\left( J \right)\] có vị trí tương ... (Toán học - Lớp 9)
- Cho hai đường tròn \[\left( {O;5{\rm{\;cm}}} \right)\] và \(\left( {I;R} \right)\). Biết \(OI = 7{\rm{\;cm}},\) giá trị của \(R\) để hai đường tròn ở ngoài nhau là (Toán học - Lớp 9)
- Cho hai đường tròn \[\left( {O;5{\rm{\;cm}}} \right)\] và \(\left( {I;R} \right)\) với \(R < 5{\rm{\;cm}}.\) Biết \(OI = 3{\rm{\;cm}},\) giá trị của \(R\) để hai đường tròn tiếp xúc trong là (Toán học - Lớp 9)
- Cho hai đường tròn \(\left( {O;1{\rm{\;cm}}} \right)\) và \(\left( {I;3{\rm{\;cm}}} \right)\) cắt nhau, đoạn thẳng \(OI\) có độ dài là (Toán học - Lớp 9)
- Cho hai đường tròn \(\left( O \right)\) đường kính \(7{\rm{\;cm}}\) và \(\left( {I;\,4{\rm{\;cm}}} \right).\) Biết \(OI = 1{\rm{\;cm,}}\) vị trí tương đối của hai đường tròn \(\left( O \right)\) và \(\left( I \right)\) là (Toán học - Lớp 9)
- Cho đường tròn \[\left( O \right)\] có bán kính \[R = 5{\rm{\;cm}}.\] Khoảng cách từ tâm đến dây \[AB\] là \[3{\rm{\;cm}}.\] Độ dài dây \[AB\] bằng (Toán học - Lớp 9)
- Cho hình chữ nhật \[ABCD\] có \[AC = 16{\rm{\;cm}}.\] Biết rằng bốn điểm \[A,B,C,D\] cùng thuộc một đường tròn. Gọi \[O\] là giao điểm của hai đường chéo \[AC\] và \[BD.\] Tâm và bán kính của đường tròn đó là (Toán học - Lớp 9)