人教版高中英语精品课件 选修九 Unit2 Sailing the oceans-Reading
The navigator can then see two images, the horizon and the sun side by side. He can then measure the angle between them on a scale at the bottom of the instrument. The scale goes from 0 to 120 degrees. An earlier instrument, called a quadrant, measured innly measure angles from 0 to 90 degrees.
2. Which do you think was easier to work
out: latitude or longitude?
Latitude, because it was used to
measure how far you had traveled from
land on a straight line. It was
sextant
The sextant is a navigational instrument for measuring the angle between the horizon and some object in the sky. First a sailor looks at the horizon through an eyepiece. At the same time he can see light from the sun or a star reflected off a small mirror on top of the instrument, onto a second mirror and into the eyepiece.
It has 17 stars listed as well as a map of the sky overhead (for 37 degrees) and the ecliptic (黄道). The time of day or night is on the outside edge with noon at the top of astrolabe the Astrolabe and midnight at the bottom. It comes with a carrying chain, a pouch, and a book on its use. The reverse side has a sight for measuring the elevations of the heavenly bodies.
discovered a long time before longitude.
3. Can you identify these early navigational instruments seamen used and explain how they are used? 1) compass ( in ancient China) 2) astrolabe 3) sextant 4) sea / nautical / marine chart
Han dynasty. It is made up of a bronze foundation (青铜地盘) and magnetic spoon(磁勺) which is made of natural magnet, positioned right in the central of the foundation.
The handle of the spoon points to the south, while the other side points to the north. When the Sinan is in the still, the handle of the spoon points to the south because of influence of the terrestrial magnetism (地磁).
nautical chart
Nautical charts are maps of the depth of the sea and the currents of the oceans. They provide modern sailors with routes through the seas, rather like roads through the countryside. The information began to be collected in the nineteenth century and has continued to be updated ever since. These charts were not available to Captain Bligh or Zheng He.
Reading
The four basic instruments for navigation: Sinan, Inch Astrolabe, Sextant and nautical map.
Sinan, the ancient Chinese compass.
It was invented by Zhang Heng in the
Discuss
1. How do you think seamen found their way before modern accurate methods of navigation were invented? Kept close to the shore, used nature such as the sun, wind, birds, tide, etc, to help them, and used some of the instruments including a compass, astrolabe, etc.
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高中英语 Unit2Sailing the oceans-Textbook课件 新人教选修9
4 Which ones do you think are still used today? Sea charts are still used today.
Comprehending
1 Read the passage and answer the following questions. 1 What is the use of a bearing circle, astrolabe, quadrant or sextant? (B)
2 Which do you think was easier to work out: latitude or longitude?
Latitude, bre how far you had travelled from land on a straight line. It was discovered a long time before longitude.
3 Why is the position of the sun and various stars useful for working out latitude?
The position of the sun and stars are useful for working out latitude because they are fixed points in the sky and their movements in relation to the earth are already known. So they can be used to measure a ship's position.
3 What would you do if you came across the following problems during your voyage? Read the chart below and fill in your plans of action to deal with them.
Comprehending
1 Read the passage and answer the following questions. 1 What is the use of a bearing circle, astrolabe, quadrant or sextant? (B)
2 Which do you think was easier to work out: latitude or longitude?
Latitude, bre how far you had travelled from land on a straight line. It was discovered a long time before longitude.
3 Why is the position of the sun and various stars useful for working out latitude?
The position of the sun and stars are useful for working out latitude because they are fixed points in the sky and their movements in relation to the earth are already known. So they can be used to measure a ship's position.
3 What would you do if you came across the following problems during your voyage? Read the chart below and fill in your plans of action to deal with them.
人教版高中英语精品课件 选修九 Unit2 Sailing the oceans-Textbook
2 Which do you think was easier to work out: latitude or longitude? Latitude, because it was used to measure how far you had travelled from land on a straight line. It was discovered a long time before longitude.
3 Why is the position of the sun and various stars useful for working out latitude? The position of the sun and stars are useful for working out latitude because they are fixed points in the sky and their movements in relation to the earth are already known. So they can be used to measure a ship's position.
2 Why are speed and time important in working out the longitude of a ship? Speed and time are important in finding out the longitude of a ship because the earth moves fifteen degrees westwards every hour. If you know your direction, speed and time, you can work out the approximate longitude or change in your position in relation to the stars.
人教版高中英语精品课件 选修九 2.5《Unit 2 Sailing the oceans 》
Using the weather
( 1 minute )
To help identify the position of a stream or river when…
To direct their sailing
Using nature
( 5 minutes )
. Use the information to analyze the navigational skills and write the answers in 1. To find the ship’s position at sea a sailor your own words. the North Star and the sun. used _______________________. 2.A sailor knew that land was nearby if he clouds , fresh seaweed, saw__________________________ nesting birds or fog __________________________. sea currents or tides and 3.Sailors used ____________________ ______ winds to increase their speed.
2.What is the difference between a navigator and an explorer? A navigator explores the sea; an explorer discovers new places on land.
Is he a navigator or an explorer ?
高中英语 Unit2Sailing the oceans-Listening课件 新人教选修9 公开课精品课件
WM: That sounds clever! I’ve heard too about the Polynesians in the Pacific Ocean. They did some amazing voyages without any navigational instruments to help them at all. How did they do that?
Zheng He remarks how much the foreign kings liked porcelain and silk.
1. He brought a giraffe for the Emperor from Africa. 2. He brought scarves of fine gold decorated with pearls and precious stones.
Keep south of Iceland so that you cannot see land but just coastal birds.
Follow this route and you should reach Greenland.
Use the information from the listening to explain these sailing strategies.
weather waves
clouds
rainfall
other ships mountains
2. Listen to the tape again and fill in the chart.
Sailors from Phoenicia
Norway Polynesia
Sea or Ocean Mediterranean
高中英语 Unit 2 Sailing the oceans课件 新人教版选
Unit 2
Sailing the oceans
• James Cook was born in 1728 in Marton，England.His father， a Scottish migrant farm worker，allowed James to work on coal －carrying boats at eighteen.Cook spent his free time learning math and navigation.This led to his appointment as mate (大 副)．
• The Third Voyage.
• The Navy wanted Cook to determine if there was a Northwest Passage，a mythical waterway between Europe and Asia across the top of North America.Cook set out in July of 1776 and rounded the southern tip of Africa and headed east across the Indian Ocean until his navigation of the Bering Sea was stopped by the impassible Arctic ice.
• Cook’s explorations greatly increased European knowledge of the world.As a ship captain and skilled cartographer，he filled in many gaps on world maps.His contributions to eighteenth century science helped further exploration and discovery for many generations.
Sailing the oceans
• James Cook was born in 1728 in Marton，England.His father， a Scottish migrant farm worker，allowed James to work on coal －carrying boats at eighteen.Cook spent his free time learning math and navigation.This led to his appointment as mate (大 副)．
• The Third Voyage.
• The Navy wanted Cook to determine if there was a Northwest Passage，a mythical waterway between Europe and Asia across the top of North America.Cook set out in July of 1776 and rounded the southern tip of Africa and headed east across the Indian Ocean until his navigation of the Bering Sea was stopped by the impassible Arctic ice.
• Cook’s explorations greatly increased European knowledge of the world.As a ship captain and skilled cartographer，he filled in many gaps on world maps.His contributions to eighteenth century science helped further exploration and discovery for many generations.
高中英语 Unit2Sailing the oceans-Reading课件 新人教选修9 公开课精品课件
ห้องสมุดไป่ตู้extant
The sextant is a navigational instrument for measuring the angle between the horizon and some object in the sky. First a sailor looks at the horizon through an eyepiece. At the same time he can see light from the sun or a star reflected off a small mirror on top of the instrument, onto a second mirror and into the eyepiece.
What would you do if : You were offshore but you needed more food and water.
Plan of action Follow nesting birds to shore ; look for special cloud formations or fog over streams to find land.
discovered a long time before longitude.
3. Can you identify these early navigational instruments seamen used and explain how they are used? 1) compass ( in ancient China) 2) astrolabe 3) sextant 4) sea / nautical / marine chart
高中英语 Unit2Sailing the oceans-Reading课件 新人教选修9
Speed and time are important in finding out the longitude of a ship because the earth moves fifteen degrees westwards every hour. If you know your direction, speed and time, you can work out the approximate longitude or change in your position in relation to the stars.
The handle of the spoon points to the south, while the other side points to the north. When the Sinan is in the still, the handle of the spoon points to the south because of influence of the terrestrial magnetism (地磁).
Discuss
1. How do you think seamen found their way before modern accurate methods of navigation were invented? Kept close to the shore, used nature such as the sun, wind, birds, tide, etc, to help them, and used some of the instruments including a compass, astrolabe, etc.
latitude but didn’t your speed and
The handle of the spoon points to the south, while the other side points to the north. When the Sinan is in the still, the handle of the spoon points to the south because of influence of the terrestrial magnetism (地磁).
Discuss
1. How do you think seamen found their way before modern accurate methods of navigation were invented? Kept close to the shore, used nature such as the sun, wind, birds, tide, etc, to help them, and used some of the instruments including a compass, astrolabe, etc.
latitude but didn’t your speed and
Unit 2 Sailing the oceans-Textbook 课件-人教选修9精品
Navigator sea nautical instruments
find new islands or continents
Navigator is someone who finds the position and plots the course of a ship, an aircraft, a car, etc, using maps and instruments.
1 _m_e_a_s_u_r_in_g__ti_m_e__a_n_d_s_p_e_e_d____
2 _c_o_m_p_a_s_s_a_n_d__c_o_m_p_l_ic_a_t_e_d__ __m_a_t_h_em__a_ti_c_a_l_ta_b_l_e_s___ .
5 Write down the working principles of the following instruments:
2 A sailor knew that land was nearby if he saw _fr_e_s_h_s_e_a_w_e_e_d_,_n_e_s_ti_n_g_b_i_rd_s__re_t_u_rn_i_n_g _h_o_m_e__in__th_e__ev_e_n_i_n_g_o_r__fo_g__ .
What is the use of a compass? (A) 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
A navigator explores the sea; an explorer discovers new places on land.
find new islands or continents
Navigator is someone who finds the position and plots the course of a ship, an aircraft, a car, etc, using maps and instruments.
1 _m_e_a_s_u_r_in_g__ti_m_e__a_n_d_s_p_e_e_d____
2 _c_o_m_p_a_s_s_a_n_d__c_o_m_p_l_ic_a_t_e_d__ __m_a_t_h_em__a_ti_c_a_l_ta_b_l_e_s___ .
5 Write down the working principles of the following instruments:
2 A sailor knew that land was nearby if he saw _fr_e_s_h_s_e_a_w_e_e_d_,_n_e_s_ti_n_g_b_i_rd_s__re_t_u_rn_i_n_g _h_o_m_e__in__th_e__ev_e_n_i_n_g_o_r__fo_g__ .
What is the use of a compass? (A) 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
A navigator explores the sea; an explorer discovers new places on land.
人教版高中英语选修9课件：Unit 2 Sailing the oceans Grammar(共41张PPT)
The girl laughed a merry laugh.
= The girl laughed merrily.
He sighed a deep sigh.
= He sighed deeply.
许多动词往往既是不及物动词又是及 物动词。例如： Gus asked me whether I’d like to have dinner with him. I accepted. (vi.) I accepted the invitation. (vt.) He painted every day. (vi.) He painted vivid portraits of friends and acquaintances. (vt.)
They have remained loyal to the government. Their hall was larger than his whole flat.
The task of inspecting it proved to be exciting and interesting. It sounds unnatural to us. My memories of a London childhood are happy ones. His body was the color of bronze.
At last she thanked them and left. (vi.) All I know is that Michael and I never left the house. (vt.)
连系动词虽具有词汇意义, 但需要带有
表语才能构成动词谓语。例如：
The station seems a very small one.
最新人教版高中英语选修九精品课件：精品课件： Unit2Sailing the oceans-Learning about language
going to do sth. and plan a good way of
doing it 精心制定出，安排
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eg.
⑴ See if you can work out this bill
out.
计算
⑵ The plot is so complicated that it’ll
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4. Complete the following paragraph with the words below.
precise outward nowhere awkward reference seaweed accelerate mercy randomly voyage alongside approximate
island. It seemed to be covered in nests.
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Suddenly, as Samuel looked, an enormous
bird swooped down and picked him up as
if he were a/ an_a_w__k_w_a_r_d_ parcel. It _a_cc_e_l_e_ra_t_e_d_ its speed and rose straight up
unknown sea to an unknown continent.
He set out with his instruments so he
would not be at the m__e_r_c_y of the sea. He
found on his _o_u_t_w_a_r_d_ journey a rocky