英语25课ppt.ppt

L/O/G/O Unit 5 Look into Science Chemistry Biology Weather Physics Technology Space Unit introduction What is science? Science is about physics, chemistry, biology, geography, space and so on. Lesson 25 Lets Do an Experiment science 科学 experiment 实验;试验 jar 广口瓶; 罐子 upside 上部;上边 pour 倒出；倾倒 correct 正确的；恰当 scientific 科学的　 method 方法; 办法 raincoat 雨衣 force n.力量 pressure 压力 v.迫使；强迫 conclude 得出结论 Step 1: preparation Some pieces of cardboard; A jar; Some water; A basin Guess what we will do next? Step 2 do the experiment: 1. fill the jar full with water; 2. cover the top with a piece of cardboard and turn the upside down; 3. hold the cardboard for some seconds and then take off your hand; 4. observe what happens (result: the water stays in the jar for some time) Step 3 conclude: Conclusion: The force of air is strong enough to hold the water. Or the air pressure is around us. 1. cover … with 用……覆盖 eg: Please cover the table with the cloth! be covered with 被…….覆盖 eg: The ground is covered with snow . 2. be sure of 确信某事 eg: Are you sure of the matter? be sure that 确信做……. eg: He is sure that he will pass the exam. 3. enough(adj.) adj.+enough to do sth. 足够…….做某事 He is old enough to go to school. enough time/ money L/O/G/O