introductory unit gr 6 ppt lesson 6

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SPACESHIP EARTH: A New Journey Each Day and Year Lesson 6

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Unit 1 lesson 6 PPT "Global Streets"

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Page 1: Introductory Unit GR 6    PPT lesson 6

SPACESHIP EARTH:

A New Journey Each Day and Year

Lesson 6

Page 2: Introductory Unit GR 6    PPT lesson 6

Léon Foucault

What did this experiment prove?

Page 3: Introductory Unit GR 6    PPT lesson 6

Earth Rotation

地球的自转

Page 4: Introductory Unit GR 6    PPT lesson 6

Direction:

From West

To East Counterclockwise 逆时针

Page 5: Introductory Unit GR 6    PPT lesson 6

Night and Day

Page 6: Introductory Unit GR 6    PPT lesson 6

Different places have timeDifferent We call the difference

time difference 时差

时区

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MAP-READING

longitude difference: 1°, time difference: 4min

longitude difference: 15°, time difference: 1 h

Page 8: Introductory Unit GR 6    PPT lesson 6

Time Zones 时区

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时区的划分东时区西时区

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东十二区和西十二区各跨经度 7.5°合为一个时区,称为东西十二区。

Time Zones

How to set time zones?

以本初子午线为基准,划为 ,或叫 。

在中时区以东,依次划分为 区至 区;

在中时区以西,依次划分为 区至 区。

中时区 零时区

东一 东十二

西一 西十二

全球共划分 个时区,每个时区跨经度 。24 15°

Page 11: Introductory Unit GR 6    PPT lesson 6

相邻两时区相差 小时 东边的时间比西边的时间要

1

东八

Beijing 我国采用 区的区时

( Time )

Page 12: Introductory Unit GR 6    PPT lesson 6

1.Calculate the (时差 ): If the two places are both in the same eastern or western time zones ,we use to find the time difference ;If one place is in the eastern time zone, and the other is in the western time zone ,we use .

time difference

subtraction

addition

ConclusionHow to calculate the time in different places

同减异加

Page 13: Introductory Unit GR 6    PPT lesson 6

2.Calculate the time in one zone: The time in the east is than the time in the west .If we want to calculate the time in the ,we should add the time difference; if we want to calculate the time in the west ,we should the time difference.

earlier

east

subtract

东加西减

Page 14: Introductory Unit GR 6    PPT lesson 6

Do you know why?

1519年麦哲伦船队向西作环球航行,于 1522年完成环球航行一周回到西班牙时,当地的日历上是9月 8日,而水手们每天记录的航海日记上却是 9月 7日。怎么会丢失一天呢?The International Date Line

Page 15: Introductory Unit GR 6    PPT lesson 6

加一天

减一天

Page 16: Introductory Unit GR 6    PPT lesson 6

算时差两地相差几个时区,区时就相差几个小时

计算时东正西负,东边的时区减去西边的时区

计算西五区与东二区的时差

2-(- 5)= 7两地时差为 7小时

Practice

Page 17: Introductory Unit GR 6    PPT lesson 6

算具体时刻(已知一个时区的区时,求另一个时区的区时)

1. 计算两个时区的时差

2. 根据东加西减(右加左减,和数轴一样)时差已知东京时间(东九区)为5月1日12: 00,求伦敦(中时区)的区时?时差: 9- 0= 9

区时: ∵伦敦在东京的西面

∴12- 9= 3

Page 18: Introductory Unit GR 6    PPT lesson 6

当美国纽约(西五区)是 10月 27日19: 15时,东八区的区时是多少?

时差: 8-(- 5)= 13

区时:(东加西减)

19+ 13=32

所以东八区的区时是 10月 28日 8:15

Page 19: Introductory Unit GR 6    PPT lesson 6

The Earth is one of nine planets that orbit the Sun. Together they make up our Solar System.

Page 20: Introductory Unit GR 6    PPT lesson 6

地球的公转

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January

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July

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SUMMARY

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Answers

Page 27: Introductory Unit GR 6    PPT lesson 6

The X shows where SPIDERMAN lives. Is it day or night?

Explain your answer_____________________________________________

This part of the

Earth is facing the direct

light of the sun.

Page 28: Introductory Unit GR 6    PPT lesson 6

New Words Coming Up!

时区

时差

国际日期变更线(日界线)

加法

减法

time zones

time difference

The International Date Line

addition

subtraction