英语：Unit4LookintoScienceLesson25课件2（冀教版八年级下）.ppt

Lesson 25 Lets Do an Experimentexperimentexperiment n.n.实验；试验实验；试验An experiment shows what happens.theorytheory n.理论；学说理论；学说A theory is an idea.jar n.广口瓶；罐子广口瓶；罐子fill v.装满装满Please fill the jar with water.upsideupside n.n.上部；上边上部；上边proveprove v.v.证实；证明证实；证明Lets do an experiment and prove whos right.observeobserve v.v.观察；监视观察；监视Please observe carefully what I do.scientificscientific adj.adj.科学的科学的methodmethod n.n.方法；办法方法；办法Thats called the scientific method.experiment 实验；试验实验；试验theory 理论；学说理论；学说jar 广口瓶；罐子广口瓶；罐子fill 装满装满upside 上部；上边上部；上边prove 证实；证明证实；证明observe 观察；监视观察；监视scientific 科学的科学的method 方法；办法方法；办法Fill in the blank with the proper word.The first letter is given.1.Lets do the e and see what happens.2.A“t ”is an idea and predicts what will happen.3.We can p whos right.4.Turn the jar u down and we can see what will happen.5.“O ”is another way of saying “watch carefully”.xperimentheoryrovepsidebserveListen to the tape and answer the Listen to the tape and answer the following questions.following questions.1.Whats Dannys theory?2.Whats Brians theory?Danny thinks the floor will get wet.Brian thinks the floor wont get wet.ExerciseExerciseFill in the blanks with the right words:Danny:What are you doing,Jenny?Jenny:I am doing an experiment.Danny:An experiment?What is it about?Jenny:A theory about air force(大气压力）大气压力）.I a jar water.I the jar a piece of cardboard.Then I the jar .Can you guess what .Danny:Im sure that the floor will .Jenny:No,I dont think so.Danny:Why?The cardboard cant keep the water in the jar.Because the air hold the water.Thats called the .fillwithcoverwithturnupsidedownwill happenget wetscientific method 1 2 3 4 5 6 7 8 9 10111213Homework:Do the experiment with your friends inyour home.