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

1、Lesson 25 Lets Do an ExperimentAn experiment shows what happens.A theory is an idea.Please fill the jar with water.Lets do an experiment and prove whos right.Please observe carefully what I do.Thats called the scientific method.experiment 实验；试验实验；试验theory 理论；学理论；学说说jar 广口瓶；广口瓶；罐子罐子fill 装满装满upside 上部

2、；上边上部；上边prove 证实；证证实；证明明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”.xperim

3、entheoryrovepsidebserve1.Whats Dannys theory? 2.Whats Brians theory? Danny thinks the floor will get wet. Brian thinks the floor wont get wet.Fill 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 theor

4、y 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