Unit 2 Sailing the oceans Warming up &Reading课件（30张PPT）
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| 名称 | Unit 2 Sailing the oceans Warming up &Reading课件（30张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 2.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2019-10-26 11:26:32 | ||
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(共30张PPT)
人教2003课标版选修9
Unit2 Sailing the Oceans
Warming up,Pre-reading, Reading,Comprehending
He made seven voyages during his lifetime and contributed greatly to the science of navigation in China.
navigators
Zheng He
Marco Polo
James Cook
What instruments did they use in the sailing?
compass
astrolabe(星盘)
sextant(六分仪)
sea/nautical chart （航海图）
early navigational instruments
Read about what navigation was like before modern instruments were used.
Q1: What is the type of this writing?
Q2: How many instruments are used to find latitude?
It's an expository writing.
Four.
Sailing the oceans
Fast-reading
to get the general idea.
Page 1
Using nature
Keeping alongside the coastline
Using celestial bodies
Using wildlife
Using the weather
Using the sea
Using nature
Keeping alongside the coastline
Using celestial bodies
Using wildlife
Using the weather
Using the sea
Using celestial bodies
to plot the positions
to work out the latitude
Using wildlife
If seaweed was fresh and smelled strongly, the ship was close to land.
Sea birds could be used to show the way to land when it was nowhere to be seen.
a special cloud formation indicates there is land close by
Using the weather
To help identify the position of a stream or river when they were close to land.
To direct their sailing.
. Use the information to analyze the navigational skills and write the answers in your own words.
To find the ship’s position at sea a sailor used _______________________.
A sailor knew that land was nearby if he saw__________________________ __________________________.
Sailors used ____________________ ______ to increase their speed.
the North Star and the sun.
sea currents or tides and
winds
Using nature
clouds , fresh seaweed,
nesting birds or fog
( summary )
Fast-reading
to get the general idea.
then answer the questions.
Page 2
Using navigational instruments
1. Finding longitude
2. Finding latitude
the compass
the bearing circle (方位圆)
the astrolabe (星盘)
the quadrant (象限仪,四分仪)
the sextant (六分仪)
What would you do if you came across the following problems during your voyage?
Read the passage and answer the following questions.
What is the use of a bearing circle, astrolabe, quadrant or sextant? ( ) What is the use of a compass? ( ) A. to set the course of the ship B. to measure the position of the ship C. to measure the speed of the ship D. to tell the time
B
A
Using instruments
Fill in the blanks.
There were two methods to find longitude: 1. __________________________
2.___________________________
using time and speed
compass and complicated
mathematical tables
Using instruments
Write down the working principles of the following instruments :
Bearing circle:
Astrolabe:
Quadrant:
Sextant:
to compare the height of the sun now with the position of the sun at midday.
to compare the position of the ship in relation to some stars or the sun.
a more precise form of the astrolabe, to measure how high stars are above the horizon, and compare that measurement with previous measurements.
an updated version of the quadrant and so it was more accurate, to measure the angle between two fixed points outside the ship.
horizon
Sun height
A Bearing Circle
Bearing the sun--- height and azimuth
(方位)
What would you do if you came across the following problems during your voyage?
Suppose you were a sea captain aiming to sail round Africa.
1. What skills would you seek in your sailors?
2.What problems would you anticipate for this journey?
The sailors would need to be excellent navigators,able to cope with both hot and cold weather, experienced in sailing through very bad weather and able to co-operate in a team.
I would anticipate the extreme weather, very hot weather around the equator,cold weather around the Cape of Good Hope,very storm seas around the Cape, and problems with food and water, etc.
summary
Past:
Now:
?
科技是国之利器。国家赖之以强，人民生活赖之以好。 ---习近平
Homework
1. Review this passage.
2. Preview Learning about language.
What would you do if you came across the following problems during your voyage?
人教2003课标版选修9
Unit2 Sailing the Oceans
Warming up,Pre-reading, Reading,Comprehending
He made seven voyages during his lifetime and contributed greatly to the science of navigation in China.
navigators
Zheng He
Marco Polo
James Cook
What instruments did they use in the sailing?
compass
astrolabe(星盘)
sextant(六分仪)
sea/nautical chart （航海图）
early navigational instruments
Read about what navigation was like before modern instruments were used.
Q1: What is the type of this writing?
Q2: How many instruments are used to find latitude?
It's an expository writing.
Four.
Sailing the oceans
Fast-reading
to get the general idea.
Page 1
Using nature
Keeping alongside the coastline
Using celestial bodies
Using wildlife
Using the weather
Using the sea
Using nature
Keeping alongside the coastline
Using celestial bodies
Using wildlife
Using the weather
Using the sea
Using celestial bodies
to plot the positions
to work out the latitude
Using wildlife
If seaweed was fresh and smelled strongly, the ship was close to land.
Sea birds could be used to show the way to land when it was nowhere to be seen.
a special cloud formation indicates there is land close by
Using the weather
To help identify the position of a stream or river when they were close to land.
To direct their sailing.
. Use the information to analyze the navigational skills and write the answers in your own words.
To find the ship’s position at sea a sailor used _______________________.
A sailor knew that land was nearby if he saw__________________________ __________________________.
Sailors used ____________________ ______ to increase their speed.
the North Star and the sun.
sea currents or tides and
winds
Using nature
clouds , fresh seaweed,
nesting birds or fog
( summary )
Fast-reading
to get the general idea.
then answer the questions.
Page 2
Using navigational instruments
1. Finding longitude
2. Finding latitude
the compass
the bearing circle (方位圆)
the astrolabe (星盘)
the quadrant (象限仪,四分仪)
the sextant (六分仪)
What would you do if you came across the following problems during your voyage?
Read the passage and answer the following questions.
What is the use of a bearing circle, astrolabe, quadrant or sextant? ( ) What is the use of a compass? ( ) A. to set the course of the ship B. to measure the position of the ship C. to measure the speed of the ship D. to tell the time
B
A
Using instruments
Fill in the blanks.
There were two methods to find longitude: 1. __________________________
2.___________________________
using time and speed
compass and complicated
mathematical tables
Using instruments
Write down the working principles of the following instruments :
Bearing circle:
Astrolabe:
Quadrant:
Sextant:
to compare the height of the sun now with the position of the sun at midday.
to compare the position of the ship in relation to some stars or the sun.
a more precise form of the astrolabe, to measure how high stars are above the horizon, and compare that measurement with previous measurements.
an updated version of the quadrant and so it was more accurate, to measure the angle between two fixed points outside the ship.
horizon
Sun height
A Bearing Circle
Bearing the sun--- height and azimuth
(方位)
What would you do if you came across the following problems during your voyage?
Suppose you were a sea captain aiming to sail round Africa.
1. What skills would you seek in your sailors?
2.What problems would you anticipate for this journey?
The sailors would need to be excellent navigators,able to cope with both hot and cold weather, experienced in sailing through very bad weather and able to co-operate in a team.
I would anticipate the extreme weather, very hot weather around the equator,cold weather around the Cape of Good Hope,very storm seas around the Cape, and problems with food and water, etc.
summary
Past:
Now:
?
科技是国之利器。国家赖之以强，人民生活赖之以好。 ---习近平
Homework
1. Review this passage.
2. Preview Learning about language.
What would you do if you came across the following problems during your voyage?