资源简介

(共35张PPT)
Natural Disasters
Welcome to the Unit
Unit 2
Part 1 Lead-in
Nature in the balance
Oceans & Rivers
——peaceful
Sky
——pure
Mountain & Forest
——palatial
Land
——prosperous
Nature is kind of a loving mother, but also a butcher in cold blood.
——Victor Hugo
butcher / b t r/ someone who kills a lot of people, especially in a cruel way
Unbalanced Nature
Nature can _______ us,
but it also can ________ us.
help
destroy
Part 2 Recognition
Nature Disasters
Discover the power of some disasters
The natural environment often undergoes abnormal changes, some of which can cause damage to resources, loss of property, and casualties. Such abnormal changes are called natural disasters.
Nature Disasters
Wildfires
The 2025 Los Angeles Wildfire Event
In January 2025, the Los Angeles area in California, USA, experienced severe wildfires that resulted in substantial casualties and property damage. Here are the details:
Casualties: As confirmed by the Los Angeles County Medical Examiner's Office on January 12, the death toll from the wildfires rose to 24.
Property Damage: It is estimated that approximately 12,000 homes, commercial buildings, schools, and other structures were damaged or destroyed.
Evacuations: Around 150,000 people were ordered or warned to evacuate.
Economic Losses: AccuWeather estimated that the overall economic losses could reach between $135 billion and $150 billion.
Nature Disasters
The Typhoon “Mo Jie” Disaster Event in 2024
On September 6, 2024, Typhoon No. 11 "Mo Jie"made landfall in Wenchang, Hainan, and then entered the Beibu Gulf, becoming the strongest typhoon to hit China in the autumn since 1949.
Casualties: As of 12:00 on September 7, the disaster had affected 1.227 million people to varying degrees in Hainan, Guangdong, and Guangxi, resulting in 3 deaths and 95 injuries.
Economic Losses: The direct economic losses caused by Typhoon "Mo Jie" have approached 80 billion yuan， accounting for 9.4% of Hainan Province's GDP of 755.1 billion yuan last year.
Typhoon
Nature Disasters
The 2021 Henan Flood Disaster
In July 2021, Henan Province in China suffered from a severe flood disaster caused by extreme rainfall, resulting in significant casualties and economic losses. The specific impacts are as follows:
Casualties: The disaster affected 14.786 million people, with 398 deaths (including missing persons).
Economic Losses: The direct economic losses amounted to 120.06 billion yuan.
Flood
Nature Disasters
The 2022 Hunga Tonga-Hunga Ha'apai Volcanic Eruption
On January 15, 2022, the Hunga Tonga-Hunga Ha'apai volcano located in the South Pacific island nation of Tonga erupted violently, causing widespread destruction.
Casualties: The tsunami triggered by the volcanic eruption affected multiple islands in Tonga, resulting in numerous injuries, with the exact number of casualties unknown.
Economic Losses: The volcanic eruption caused severe damage to Tonga's infrastructure, including houses, roads, airports, and communication facilities. The estimated economic losses are in the hundreds of millions of dollars.
Volcanic eruption
The 1920 Haiyuan Earthquake
On December 16, 1920, at 20:05, a magnitude 8.5 earthquake occurred in Haiyuan County, Ningxia.
Casualties: A total of 240,000 people died.
Economic Losses: The earthquake affected a wide area, impacting 17 provinces and regions. The 1976 Tangshan Earthquake
On July 28, 1976, at 03:42, a magnitude 7.8 earthquake occurred in Tangshan City, Hebei Province,
Casualties: A total of 240,000 people died, and 160,000 people were injured.
Economic Losses: The Tangshan earthquake and its aftershocks caused massive economic losses . The exact amount is difficult to estimate, but the impact is profound.
The 2008 Wenchuan Earthquake
On May 12, 2008, at 14:28, a magnitude 8.0 earthquake occurred in Yingxiu Town, Wenchuan County, Sichuan Province. This earthquake is the deadliest earthquake since the 20th century.
Casualties: As of June 3 of that year, the earthquake caused 69,227 deaths, 374,643 injuries, and 17,923 people missing.
Economic Losses: The direct economic losses amounted to 845.1 billion yuan.
Earthquake
Wildfire
Flood
Earthquake
Volcanic eruption
Typhoon
Casualties
Evacuation
Vocabulary challenges and addition.
Hurricane
Tornado
Tsunami
Drought
Landslide
Part 3 Video-watching
Watch the video and check your answer.
Plates moving underground can cause an earthquake, which is _______________ of the earth’s surface.
When a volcano erupts, ___________, volcanic ash and even rocks escape through a large opening at the top.
A large amount of _______________ falling down a hill or mountain is called a landslide.
a sudden shaking
hot gases
earth and rock
Video-watching
How to describe a disaster.
Plates moving underground can cause an earthquake, which is a sudden shaking of the earth’s surface.
When a volcano erupts, hot gases, volcanic ash and even rocks escape through a large opening at the top.
A large amount of earth and rock falling down a hill or mountain is called a landslide.
Video-watching
1. Read the three sentences again and underline the key words.
How to describe a disaster.
Plates moving underground can cause an earthquake, which is a sudden shaking of the earth’s surface.
Video-watching
2. Conclude sentence pattern.
[原因] can cause [灾害], which is [简单定义].
[原因] can cause [灾害], which is [简单定义].
How to describe a disaster.
When a volcano erupts, hot gases, volcanic ash and even rocks escape through a large opening at the top.
Video-watching
2. Conclude sentence pattern.
When [灾害发生], [具体事物] [动作] through [地点].
How to describe a disaster.
A large amount of earth and rock falling down a hill or mountain is called a landslide.
Video-watching
2. Conclude sentence pattern.
A large amount of [物质] [动作] down/into/toward [地方] is called [灾害].
Part 4 After-watching
After-watching
Flood
Wildfire
Tsunami
Try to use the sentence patterns to explain why or how it happened.
After-watching
Flood
Try to use the sentence patterns to explain why or how it happened.
1. 原因(Cause):
heavy rain（暴雨）melting snow（融雪）broken dam（决堤）river overflow（河水泛滥）
2. 现象(What happens):
a rush of water covers land（一股急流淹没陆地） houses get damaged（房屋被毁）
roads become unusable（道路无法通行）
3. 物质(Materials involved):
water（水）mud（泥浆） debris（碎片，如树枝、垃圾）
After-watching
Try to use the sentence patterns to explain why or how it happened.
Flood
Pattern 1: Heavy rain can cause a flood, which is a rush of water covering land.
Pattern 2: When a flood happens, dirty water and mud flow through streets
Pattern 3: A large amount of rainwater pouring into a city is called a flood.
After-watching
Wildfire
Try to use the sentence patterns to explain why or how it happened.
1. 原因(Cause):
dry weather（干旱天气）lightning（闪电）campfire（篝火）cigarette（香烟）
2. 现象(What happens):
flames spread（火焰蔓延）smoke fills the air（空气中充满烟雾）trees burn（树木燃烧）
3. 物质(Materials involved):
fire（火）smoke（烟雾）ash（灰烬）
After-watching
Try to use the sentence patterns to explain why or how it happened.
Wildfire
Pattern 1: Dry weather can cause a wildfire, which is a big fire in the forest.
Pattern 2: When a wildfire starts, flames and smoke spread through the forest.
Pattern 3: A large amount of fire burning trees and grass is called a wildfire.
After-watching
Try to use the sentence patterns to explain why or how it happened.
Tsunami
1. 原因(Cause):
earthquake（地震）underwater volcano（海底火山）landslide（山体滑坡）
2. 现象(What happens):
huge waves（巨浪）water rushes（水冲）floods coastal areas（淹没沿海地区）
3. 物质(Materials involved):
seawater（海水）debris（碎片）sand（沙子）
After-watching
Try to use the sentence patterns to explain why or how it happened.
Tsunami
Pattern 1: An earthquake under the sea can cause a tsunami, which is a very big wave.
Pattern 2: When a tsunami comes, huge waves rush onto the shore.
Pattern 3: A large amount of seawater moving toward the coast is called a tsunami.
Part 5 Thinking
Thinking
Do you think whether human should blame nature for natural disasters
Our actions decide our future
Part 6 Homework
Homework
Mini writing: choose one disaster and describe its formation and consequences, using 5-8 sentences.
Blackboard Design 　
Unit 2 Natural disasters
Welcome to the unit
Blackboard Design 　
1.(原因) can cause （灾害），which is (简单定义）.
2.When（灾害发生），（具体事物）（动作）through（地点）.
3.A large amount of (物质) (动作) down /into /toward (地方) is called (灾害).

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