首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Scientific Theories In science, a theory is a reasonable explanation of observed events that are related. A theory often inv
Scientific Theories In science, a theory is a reasonable explanation of observed events that are related. A theory often inv
admin
2015-01-13
31
问题
选项
答案
Scientific Theories 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 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 scientist’s 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. 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.
解析
转载请注明原文地址:https://kaotiyun.com/show/FIHK777K
0
专业英语四级
相关试题推荐
Televisioncanbeawonderfullearningtool.Thirty-oddyearsago,"SesameStreet,""TheElectricCompany"and"Mr.Rogers’Neig
Thefirstdayofschooloneofmyclassmatesbeganatalkwithmethatchangedmylife.Shesaid,"Hi,handsome.Mynameis
IfoursolarsystemhasaHell,it’sVenus.Theairischokedwithfoulandcorrosivesulfur,heavedfromancientvolcanoesand
Manygenerationsago,theIroquoispeoplelivedinastateofperpetualwarthroughouttheirhomelandsinwhatisnowNewYorkS
AProfessorstoodbeforehisphilosophyclassandhadsomeitemsinfrontofhim.Whentheclassbegan,wordlessly,hepickedup
Logistically,itworkedoutbestformetoflyeastfromBostonLogantoLondonHeathrowtoTokyoNarita,atripwhichinvolves
Prolongedsleepdeprivationincreasestheriskofsufferingfromastrokeorheartdisease,accordingtoamajorlong-termstudy
Toerrishumanandtoforgivedivine,accordingtotheoldadage.Humanswhoforgiveare(1)______toexperiencesignificantphys
Itisrareforataleofacademicmismanagementinasmallinstitutiontograbnationalattention.ButSciences-Poisnoordinar
______thattheenvironmentcontinuestobedamagedatthecurrentrate,itwillnotbelongbeforetheearthistotallydestroy
随机试题
下面有关颈前静脉的描述正确的是()
EveryonewasinvitedtothepartyexceptJack,,whichcausedmuch______(suspect).
A、急性腹痛B、休克C、两者均有D、两者均无胃十二指肠溃疡穿孔()
A.膝关节B.肘关节C.前臂D.上臂E.大腿最容易发生骨筋膜室综合征的是
垃圾填埋场泥质防水层施工中,应检查进场的膨润土进货质量,核验产品三证。三证不包括()。
下列()、()、()、()是绘制竣工图的依据。
在期货交易中,任何交易者必须按照其所买卖期货合约价值的一定比例(5%~10%)缴纳资金,用于结算和保证履约,这是期货交易的()
金融市场的微观经济功能包括()。
社会监督是一种()。
在面向对象方法中,不属于"对象"基本特点的是( )。
最新回复
(
0
)