What harm will nature do when it loses its temper? 2. What are the consequences of the earthquake?

Knowledge: ① the origin and harm of typhoon; ② Thunderstorm and gale; ③ foggy weather; ④ waterlogging; ⑤ Hail; ⑤ Tornado.

Skills: You can identify and draw symbols of wind, fog and thunderstorm from the weather forecast map.

2. Methods and processes: intuitive views and analytical methods.

3. Emotional attitudes and values: cherish life

Teaching requirements 1. The origin and harm of typhoon

2. Thunderstorm and gale, what should people do?

3. foggy days

4. Waterlogging disaster

5. Hail

6.tornado

Methods Design: By watching the pictures of disastrous weather in the courseware, the harm and how people did it were analyzed.

Teaching and learning process

(A) create a situation to stimulate the introduction of interest.

1. Children, time flies. Miss Xia has quietly come to us. Did you find her? (Guide students to discover the characteristics of summer weather)

Summer is not only hot, but also changeable. She said she would get angry when she was angry. Listen-

(2) Contact life and experience exploration.

Activity 1: intuitive thunderstorm

1. Play pictures of dark clouds rolling, lightning and thunder, and heavy rain pouring down.

2. What did you see just now, children? Hear what?

3. When did this happen to you? Were you scared?

The sky was clear and the sun was shining in Wan Li just now. Suddenly, dark clouds were gathering, lightning and thunder were thundering, and heavy rain fell from the sky. But before long, the sky cleared up again, the air was fresh, and sometimes beautiful rainbows appeared in the sky. What a strange natural phenomenon!

Activity 2: Understanding Thunderstorms

1. How is the natural phenomenon of thunderstorm formed?

2. Let the children say something according to the observation before class.

3. Play the courseware-Formation of Thunderstorm.

Activity 3: Hazards of Thunderstorms

1. Summer is the season with frequent thunderstorms. We often hear thunderous thunder and see dazzling lightning and heavy rain. Do you like thunderstorms, children? Tell me why.

2. Summary: A moderate thunderstorm can make crops full and bathe flowers. After the rain, the air is fresh and people feel very comfortable.

3. The formation of thunderstorm is a natural phenomenon as well as a physical phenomenon. However, thunderstorms sometimes bring disasters to human beings. Children, do you know what disasters thunderstorms will bring us?

4. Summary: Thunderstorm has caused some harm to human beings, such as: river surge, flash floods, crop damage, flooded streets, broken wires, traffic interruption, etc. Teachers should especially remind everyone to pay attention to safety in thunderstorm weather and learn to protect themselves.

Activity 4: Avoid Thunderstorms

1. Play the courseware-Thunderstorm is coming ...

2. Kid, why did Kang Kangxiong say to Yuanyuan and Pan Pan, "It's dangerous to shelter from the rain under the big tree! Go away! " ?

3. What should you do in the following situations? Show courseware.

A. Xiaohong watches TV at home.

B. Two sisters are on their way to school.

C. Little brother is playing in the park.

Let the children discuss in groups, and the group leader records your experience and methods.

4. Exchange "my experience and methods".

Children, have you ever heard of the tragedy caused by incorrect lightning protection methods? Come and talk to us.

6. In order to prevent such a tragedy from happening again, and to remind everyone of the common sense of shelter from rain, the teacher wrote a song "Shelter from Rain", which I hope everyone can remember.

Yuge

Grandpa lei, boom, the home appliances are not used for the time being.

Take shelter from the rain and don't go under the big tree. Remember the safety knowledge.

I don't panic when a thunderstorm comes. Everyone praised me as a good boy.

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Activity 5: Please find out what harm nature will do when it loses its temper.

1, Thunderstorms have caused some harm to our human beings, such as: river surges, flash floods, crop damage, flooded streets, broken power lines, traffic disruption and so on.

2. Disaster caused by earthquake: Fire: This is the second best earthquake disaster. Fire not only burns houses and buildings, but also burns people. In strong earthquakes, especially in modern metropolitan areas, fires are often more terrible than earthquakes themselves.

Tsunami: Tsunami mainly occurs in coastal areas and is the main secondary disaster of sea earthquakes. However, in the coastal areas of Chinese mainland, such disasters generally do not occur.

Plague: 1556 During the Huaxian earthquake, plague or epidemic disease claimed the lives of 654.38+million victims who died before the earthquake collapsed, which shows that the secondary disaster of plague is also extremely terrible. Plague is completely caused by the decay of human, livestock and poultry bodies collapsed by the earthquake and the spread of bacteria. After a strong earthquake, it is necessary to quickly remove and bury the bodies of people, livestock and poultry, and take effective disinfection and sterilization measures to prevent the breeding and spread of plague.

Landslides and collapses: The secondary disasters of such earthquakes mainly occur in mountainous areas and platforms. Due to the strong vibration of the earthquake, the cliff or platform slope that was already in an unstable state collapsed or collapsed. Although this secondary disaster is local, it is often devastating, so that the whole village and family are completely buried.

Flood: If an earthquake causes the dam of a reservoir to rupture and collapse, or causes the dam of a big river to burst, it will cause a flood.

In addition, ground fissures, mudslides, sand blasting and water inrush, ground collapse, toxic liquid and gas leakage, ground deformation, etc. It is also the secondary disaster of the earthquake, which may cause casualties, damage buildings, transportation and cultivated land. Therefore, the secondary disasters caused by earthquakes should not be taken lightly, but should be actively defended.

. . .

(1) What about foggy days?

Extension extension:

How to protect yourself when encountering other natural disasters?

What should we pay attention to in thunderstorm weather?

First, don't take shelter from the rain under the big tree. Farmer friends are no strangers to the way of sheltering from the rain under trees in summer. When encountering a sudden thunderstorm, you may be able to avoid being caught in the rain under the big tree, but life under the tree is not safe. A big tree is likely to become a "lightning rod", and lightning will use a wet tree as a conductor, and you are likely to become an "electrical appliance". When the rainstorm comes, the safety factor will be high if it is at least two meters away from the tree.

Second, take rain gear and go home early. During the flood season, the weather is the most changeable. Farmers try to bring rain gear before going out. When it rains, go home as soon as possible and don't wear wet clothes.

Third, don't run high. When lightning strikes, if you are in the wild, try to find a low-lying place and squat down with your feet together. Don't stand on the top of the mountain, the roof or other objects with high conductivity, or you may become a "lightning rod".

Fourth, cut off indoor and outdoor metal connections. For lightning protection, try to hide in the house. Unplug the indoor power plug to avoid introducing lightning into the room and being struck by lightning. Don't turn on the tap, make a phone call, or stand under the eaves, windowsill or in front of the house in lightning weather. Try not to go out with an umbrella with metal.

summary

Through the study of this lesson, students are required to understand the disastrous weather in this area, enhance their sense of survival and arouse their cherish of life.