Unit 4 The Wonders of Nature Section A 课件+音视频(共24张PPT)人教版(新教材)八年级下册

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Unit 4 The Wonders of Nature Section A 课件+音视频(共24张PPT)人教版(新教材)八年级下册

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(共24张PPT)
The Wonders of Nature
Section A What is amazig about nature
UNIT 4
Talk about geography facts about natural wonders.
Learn new words and phrases: wonder, desert, measurement, square kilometre, below, sea level, surface, depth, dive, unusual, bottom
01
02
1. Do you know the name of
the waterfall in the photo
2. What do you think is special about it
3. What other natural wonders
do you know
It’s Victoria Falls.
It’s super big and wide.
Angel Falls
Nile River
Sahara Desert
世界最长河流(约 6650 千米),流经 11 个非洲国家,孕育了古埃及文明,是非洲重要的水源与农业命脉。
位于委内瑞拉,是世界最高的不间断自由落体瀑布,总高 979 米,主落差 807 米,藏于圭亚那高原雨林中。
世界最大的热带沙漠,横跨北非 11 国,总面积约 932 万平方千米,地貌以沙丘、戈壁、绿洲为主,气候极端干旱。
尼罗河
安赫尔瀑布(天使瀑布)
撒哈拉沙漠
Mount Qomolangma
Dead Sea
Mariana Trench
位于西北太平洋,是全球最深的海沟,最深处挑战者深渊约 10994 米,是板块俯冲形成的深海洼地。
位于以色列、约旦、巴勒斯坦交界处的内陆盐湖,湖面海拔约 - 430.5 米(世界陆地最低点),盐度极高,人可轻松漂浮。
喜马拉雅山脉主峰,世界海拔最高峰(8848.86 米),位于中国与尼泊尔边境,山体呈金字塔状,终年积雪。
珠穆朗玛峰
死海
马里亚纳海沟
F
A
D
C
E
B
highest
biggest
lowest
deepest
8,848.86
9,000,000
416
11,000
长、宽、高、深、面积的表达方法:
基数词 + 单位词 + 形容词(long, wide, high, deep等)
Try to read the following numbers.
416 8,848.86 11,000 9,000,000
416 →
8,848.86 →
11,000 →
9,000,000 →
four hundred and sixteen
eight thousand,
eight hundred and forty-eight point eight six
eleven thousand
nine million
Host: __________our game show! Today, it's all about geography.
Answer as quickly as you can!
Question one: What is the________________in the world
Fu Xing: It's Mount Qomolangma!
Host: Correct! ________________
Lin Hongyu: I know this—it's 8,848.43 metres high.
Host: No, sorry. Fu Xing
Fu Xing: Is it 8,848.86 metres
Host: Yes! But some scientists say Qomolangma is still_____________ !
Now, name the________________ in the world.
Fu Xing: The Taklimakan Desert
Listen and fill in the blanks.
Welcome to
highest mountain
growing taller
How high is it
biggest desert
Host: ___________! Ella
Ella: It's the Sahara Desert.
Host: Right! Now, ________________
Ella: It's about 9,000,000 square kilometres.
Host: That's right! What's the _______________ on earth
Lin Hongyu: It's the Dead Sea!
Host: Well done! Its surface is 416 metres ______ sea level.
Now where's the ______________ in the ocean
Fu Xing: It's in the Mariana Trench.
Host: That's correct! How _______ is it
Fu Xing: It's about 11,000 metres deep.
Host: Correct!
Listen and fill in the blanks.
Wrong
how big is it
lowest place
below
deepest point
deep
(deep/big/high)
(highest mountain/biggest desert)
A: What’s the highest mountain in the world
B: It’s Mount Qomolangma.
A: How high is it
B: It’s 8,848.86 metres high.
10,909 metres
200 metres
3,800 metres
over 2,000 metres
/s b m s bl/潜水艇
2020
ocean floor
blind
light
11,000
Ms Gao: Thank you for the wonderful talk, Mr Jones.
Now, does anyone have any questions
Emma: I do! Why are so many countries researching the deep sea
Mr Jones: Well, curiosity is one reason.
We don't know much about the ocean floor.
Fu Xing: I remember that in 2020, China's Fendouzhe dived deeper into the
Mariana Trench than many other submersibles in the world and filmed it.
But I didn't see any deep-sea animals. What are they like
Mr Jones: Well, many deep-sea animals are large and unusual.
Some animals are blind, but they can "see" as well as others.
Some even create their own light!
Peter: Cool! Are there any other surprising facts about the deep sea
Mr Jones: Did you know that there's rubbish even at 11,000 metres deep
That shocked many people.
Ms Gao: That's terrible! We should do something about it.
Mr Jones: You're right!
What is the largest shark in the deep sea
深海中最大的鲨鱼是鲸鲨(Rhincodon typus),
它也是现存世界上最大的鱼类,最大个体体长可达 18.8 米,体重超 30 吨。
What is the bottom of the deep sea like
The bottom of the deep sea is very dark and cold. There are lots of strange-looking rocks, mountains in some places, and a lot of soft mud. There are also some special creatures.
Why is it important to research the deep sea
First, it helps us understand Earth’s history because many deep-sea rocks and sediments hold clues about past climates.
首先,研究深海能帮我们了解地球的历史,因为许多深海岩石和沉积物中,都藏着能揭示过去气候的线索。
Second, deep-sea creatures have special abilities. For example, they can make light by themselves, and they have special enzymes that work under high pressure. These can help medicine and technology.
深海生物有特殊的适应能力,比如会生物发光,还有能在高压环境下工作的酶,这些都能帮到医药和科技领域。
Most importantly, the deep sea helps control the global climate by taking in carbon dioxide.
最重要的是,深海能吸收二氧化碳,在调节全球气候方面发挥着关键作用。
A: What is the largest shark in the deep sea
B: I think it’s the whale shark.
A: Do you know how large it is
B: It can grow up to about 10 to 20 metres in length.
A: What is the bottom of the deep sea like
B: It is dark, freezing, and has high pressure. There are also
many unique creatures.
A: Why is it important to research the deep sea
B: Because the deep sea has unique species for research, holds
important resources, and can help control our climate.
How should everyone protect the deep sea
The deep sea is home to countless amazing creatures.
Summary
1. wonder n. 奇观;惊叹 v. 琢磨;想知道;感到诧异—
wonderful adj. 精彩的;绝妙的
2. measure v. 测量;量度为—measurement n. 数量;测量
3. deep adj. 深的;有……深的—depth n. 深(度);纵深
4. research v. & n. 研究;调查—researcher n. 研究者
5. usual adj. 通常的—unusual adj. 特别的;不寻常的—
usually adv.通常地
Summary
1. on earth 在地球上
2. square kilometre 平方千米
3. below/above sea level 低于/高于海平面
4. dive into the deep sea 潜入深海
5. the bottom of …… 的底部
Thank you
Unit 4
The Wonders of Nature

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