Câu hỏi:
25/03/2020 378Read 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 following questions
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 observation, 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 hyphthesis 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.Which of the following is the main subject of the passage?
Đáp án chính xác
Câu hỏi trong đề:
Tổng hợp đề thi thử Tiếng Anh có lời giải !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Đáp án là D. The place of theory and hypothesis in scientiíic investigation: Vị trí của lý thuyết và giả thuyết trong nghiên cứu khoa học.
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
It can be an amazing experience for those who have the x to leave their family and friend and live in a new place
Xem đáp án »
25/03/2020
13,861
Câu 2:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
x TV for the last four hours? Turn it off and get some exercise
Xem đáp án »
25/03/2020
11,351
Câu 3:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
It took Ted a long time to get x the breakup of his marriage
Xem đáp án »
25/03/2020
10,198
Câu 4:
There are very large rooms with beautiful decorated walls in her new house
Xem đáp án »
25/03/2020
9,952
Câu 5:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Make sure you x your assignment before you go to bed
Xem đáp án »
25/03/2020
9,890
Câu 6:
A lot needs be done to the house before anyone can start living in
Xem đáp án »
05/06/2024
9,599
Câu 7:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Of course an encyclopedia is not a book you read x
Xem đáp án »
25/03/2020
8,890
về câu hỏi!