what’s the best radio stationPPT教学课件

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So I decide on …
Homework:
Choose a topic and write an article according to the pictures given about the places in your town.
Topic 1
Topic 2
Welcome to Shangtang.It’s a good place to go shopping.All the supermarkets are good,but …… As for restaurants……
如右图(b),将铁
架台倾斜一个角度,
观两察图勾中码细静线止都时处竖细于直线向
的明位什置么。?

(a) (b) 位置,这说
FANGXIAN
2.重力方向:总是竖直向下。
DALOU
你可以用什么方 法判断大楼是否 竖直呢?
YUANLI
重垂线的工作 原理是什么? 重力的方向总 是竖直向下。
SHUIPINGYI
SHIZHONG
5、如果没有重力,下列哪种现象不
会发生(
)
A、就不会有“人往高处走,水往低
处流”这一谚语
B、玻璃杯掷到地上不会破碎
C、传统的体育比赛都失去了意义
D、“登天”不再是一件难事
6、月球对它表面的物体也有引力,并 且这个引力是地球的1/6,一个在地球 上能搬动600N重的物体的人,在月球 上能搬动( ) A、大于600N重的物体 B、小于600N重的物体 C、等于600N重的物体 D、无法确定
G= mg=50千克×9.8牛/千克=490牛 答:该物体所受的重力为490牛。
TUSHI
1、宇宙间任何两个物体之间都存在着互相吸引
的力,这个力就是( ),月亮能绕地球运
动而不跑掉就是受到( )作用的结果。
2、苹果从树上下落,是因为受到( )力的作
用,它的运动方向就是( )力的方向,我们
把这个方向叫( )。
What do you think of these fast food restaurants in Shangtang?
Changyun Restaurant
10 minutes on foot
Make a report
There are three fast food restaurants near our school . ..
friendly The first cinema
has friendly service.
The second cinema has friendlier service.
The third cinema has the friendliest service.
popular The first cinema is popular.
7.plays the most interesting music
播放最有趣的音乐
Memory check
Say something about each place in the article. 1.Screen City 2.Jason’s 3.Jazz 107.9 FM
Group 1
Group 2 3
物体为什么会下落
苹 果 为 什 么 会 往 下 掉 ?
水 为 什 么 会 往 低 处 流 ?
GAINIAN
重力
1、概念: 物体由于地球的吸引而受到的力。
重力的施力物体地是球 重力的受力物体物是体本
______,
_______

SHIYAN
如右图(a) ,将勾 码悬挂在铁架台的横 杆上,待勾码静止时 观察细线的位置。
Unit 12 What’s the best radio station? Period 2
What does the cat look like? bigger taller
The cat is faster than the mouse. stronger heavier
big
The first cinema has a big screen.
Read the article more slowly and fill in the chart:
The best
movie theater
Name
Screen City
Because
It has the biggest screens and the most comfortable seats.
给我最多主意的那一组可以得到一张50元的 大田园购物券.
Teen World
Bargain House
Guessing game Which supermarket I am not /am going to?Why not/Why?
---I think you aren’t going to …,because… ---I think you are going to …,because…
Group 4
clothes store shoe store
book shop supermarket
Best shopping guides
The group which gives the most ideas is the winner,if you’re the winners you can get a ¥50 shopping ticket from Datianyuan Supermarket.
What do young people think about places in town?We did a survey of our readers and this is what we learned. All the movie theaters are good, but the Screen City is the best in our t—o—w—n.—I—t h—a—s —the biggest screens and the most comfortable seats. However, Town Cinema is the cheapest, and it has the friendliest service. The most popular clothing store is Jason’s. It has the best quality clothing. It’s al—so—th—e—c—he—a—pe—st. Funky Fashions is the worst. It has really bad service. As for radio stations, most people think Jazz 107.9 FM is really gre—at—. I—t p—la—y—s t—he most interesting music.
The third cinema is the cheapest.
comfortable The first cinema
has comfortable seats.
The second cinema has more comfortable seats.
The third cinema has the most comfortable seats.
1.think about
认为
2.did a survey of
做调查
3.what we learned
我们所了解到的
4.has the biggest screens 有最大的银幕 5.has the friendliest service 有最友好的服务 6.has the best quality clothing 有质量最好的衣物
SHIYAN
钩码数(只)
1
2
3
质量(千克)
重力(牛)
重力 质量(牛/千克)
结论: 1、物体受到的重力跟质正量
成 。 9.8

4
GONGSHE
G/m=g
G=mg
G表示重力 m表示质量 g代表9.8牛/千克
g的含义:在地球附近质量为1千克的物 体受到的重力为9.8牛.
JISHUAN
•某水平面上物体的质量为50千克,它 所解受:的根重据力G=是m多g,少可牛得?:
讨论
你能用它来制作一个水平仪吗?
ZHONGXIN
3.重力的作用点是物体的重心:
1、质量分布均匀、形状
规则的物体:几何中心。
2、课后探究如何确定形 状不规则的物体的重心。
TANJIU
4.实验探究:影响重力的大小因素
提出问题 重力的大小究竟跟什么因素有关?
作出假设重力的大小可能跟物体的质量有关。
设计实验 得出结论
The second cinema is more popular.
The third cinema is the most popular.
3a Read silently and underline three kinds of places mentioned(被提到的)in the article .
XIAOJIE
•重力的含义 •重力的方向 •重力的作用点 •重力的大小
重力的图示
飞机坠落
3、通过把物体所受重力的大小叫( ),它
与物体的( )有关系,这个关系用公式表示
为( ),用文字叙述
为:

练习:
4、下面关于重力的说法中错误的是( ) A、地球上的所有物体都受重力的作用 B、重力作用不需要地球与物体相互接触 C、玩具“不倒翁”不倒就是重力作用的结 果 D、走钢丝的运动员,手中都握有一根长杆 是表演的需要
The second cinema has a bigger screen.
The third cinema has the biggest screen.
cheap The first cinema is cheap.
¥30
¥25 ¥20
The second cinema is cheaper.
clothing store
Jason’s
radio station Jazz 107.9 FM
It has the best quality clothing and is also the cheapest.
It plays the most interesting music.
Pay attention to these useful expressions while you’re reading
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