首页
登录
职称英语
In science, a theory is a reasonable explanation of observed events that are
In science, a theory is a reasonable explanation of observed events that are
游客
2025-04-24
22
管理
问题
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 re-vised 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. (296 words) [br] What does Jules Henri Poincare mean in the third paragraph?
选项
A、A science is difficult to form.
B、Building a house is like performing experiments.
C、Science is more than a collection of facts.
D、Scientific experiments have led to improved technology.
答案
C
解析
正如数学家Jules Henri Poincare说的,房屋由砖头建成.科学由事实构成。但是,正如一堆砖不能称作为房屋那样,事实堆砌并不能叫做科学。
转载请注明原文地址:http://tihaiku.com/zcyy/4051601.html
相关试题推荐
Themediacanimpactcurrentevents.AsagraduatestudentatBerkeleyinth
IhaveobservedthattheAmericansshowalessdecidedtasteforgeneralide
Itishardtopredicthowscienceisgoingtoturnout,andifitisreallyg
Itishardtopredicthowscienceisgoingtoturnout,andifitisreallyg
Itishardtopredicthowscienceisgoingtoturnout,andifitisreallyg
Itishardtopredicthowscienceisgoingtoturnout,andifitisreallyg
Itishardtopredicthowscienceisgoingtoturnout,andifitisreallyg
Sciencewritersmust21informationregardingscientificevents.Inthisc
Sciencewritersmust21informationregardingscientificevents.Inthisc
Sciencewritersmust21informationregardingscientificevents.Inthisc
随机试题
Whatjobdidthemangetfirst?Hegotthefirstjobas______.[originaltext]
Thereisnodoubt______heisaaoodemployee.A、asB、whoC、thatD、whatCThereis
IthasbeenmonthssinceTinaMoorelastbitintoabagelorasliceoftoas
下列选项中,不属于商业银行附属资本的是()。A.非公开储备 B.实收资本
注射剂中慎用附加剂:()。A.pH调节剂B.氯化钠C.增溶剂D.卵磷脂E.助悬
按照企业创造顾客价值方式的不同,关系营销可以分为()。A:一级关系营销 B:二
以下哪种心律失常禁用强心苷()A.心房颤动 B.心房扑动 C.室性心动
(2020年真题)依据企业所得税的有关规定,下列行为应视同销售确认收入的有()
在某工程网络计划中,已知工作M的总时差和自由时差分别为5天和2天,监理工程师检查
把150个观察单位先编号,然后每隔若干个单位抽取一个单位进行调查,例如对尾数为7
最新回复
(
0
)