The earthquake class meeting presided over the speech

Speech hosted by the class meeting on earthquake prevention and disaster reduction (1)

Moderator: Hello, teachers and students. The theme class meeting of Disaster Prevention and Mitigation Class 2 (1) begins now!

Moderator A: Eight years ago, an earthquake of magnitude 8.0 suddenly occurred in Wenchuan County, Sichuan Province. The building turned into rubble in an instant, the dam was black and blue in an instant, and a pair of eyes were helpless. ...

Moderator B: Looking at countless homeless people, the rising number of casualties, the ruins of the disaster site, everyone's heart will be filled with infinite grief and sigh, all of which make us cry. Natural disasters are sudden and unstoppable, but as long as we have confidence, courage and unity, we can overcome all difficulties. In earthquake relief, unity is strength. We set out with hope, and all difficulties and disasters will be trampled under our feet.

Moderator A: Next, please sing Let the World Be Full of Love for the people of Wenchuan today.

Moderator A: What a touching song! Not only sang our hearts, but also commemorated the 5. 12 Wenchuan earthquake.

Moderator B: 2008 has passed. Today, we must remember that our happy life is hard-won. We should cherish the happy life now, but natural disasters are merciless, so we should have disaster prevention tips. Now, who knows some tricks?

Moderator A: (roll call is free to speak). Moderator b: very good. It seems that everyone knows a lot about disaster prevention and mitigation. Next, please see the sign language sketch? How to escape?

Moderator A: How do you feel after reading the sketch?

Moderator b: very good. Everyone must remember that in case of disaster, we should escape in an orderly way and not be crowded.

Moderator A: Let's enjoy a touching poem "March to the Disaster Area".

Moderator A: After enjoying the poems, let's answer some questions about students' earthquake prevention and disaster reduction. Moderator b: to rescue the wounded after the earthquake, we must first save the people far away, and then save the people near. Is this correct? (×)

Moderator B: Excuse me, is the place where the earthquake occurred inside the earth called the epicenter? . (×) Moderator B: The students' answers were really wonderful. Finally, let our class teacher speak.

Head teacher: I believe all the students have gained something through today's class meeting activities. There is only one life, and life is precious. I hope that all students will enhance their awareness of prevention. Natural disasters are terrible, but we can still overcome them as long as we face them bravely and avoid risks correctly. Finally, I hope that students can actively strive to become voluntary propagandists and use your strength to protect more lives. Thank you! Moderator A: Students, let's work together!

Moderator: This is the end of the theme class meeting on disaster prevention and mitigation for grade two (1)!

Speech hosted by the class meeting on earthquake prevention and disaster reduction (II)

I. Announcement of activities

Students, this earthquake in Nepal has brought great pain and loss to the Nepalese people. Who can tell us how much you know about earthquakes? Students really know a lot. In this activity, let's learn how earthquakes happen and how to prevent injuries when earthquakes happen.

Second, the activity process

1, all groups communicate with each other to understand the cause of the earthquake.

2. Play a movie about the cause of the earthquake.

Students show their knowledge about earthquakes.

Student 1: Earthquake refers to the phenomenon that the lithosphere suddenly breaks under the action of internal force, and the energy inside the earth is released in the form of seismic waves, thus causing ground vibration in a certain range. Most earthquakes are related to geological structures. Earthquakes are most likely to occur in areas with faults in the earth's crust and certain activity of faults. There are two major seismic zones in the world: the Pacific Rim seismic zone and the Mediterranean-Himalayan seismic zone.

Student 2: The magnitude of an earthquake is usually expressed by the Richter scale. The greater the energy released by the earthquake, the higher the magnitude. Every time the magnitude increases 1, the energy increases by about 30 times. Usually, earthquakes below magnitude 3 are not felt by people and become microseisms; Earthquakes of magnitude 5 or above will cause different degrees of damage and become destructive earthquakes.

Student 3: Earthquake is a kind of geological disaster with the greatest harm and influence. China is one of the countries with the most serious earthquake disasters in the world. Most provinces and regions in China have experienced earthquakes of magnitude 6 or above. 1The 7.8-magnitude earthquake that occurred in Tangshan on July 28th, 976 left this industrial town with a population of one million in ruins. This is the most destructive earthquake disaster in the world in the 20th century.

Student 4: In the border area of Sichuan, Yunnan and Guizhou, modern crustal activity is strong, and earthquakes are imminent with high magnitude. Due to strong crustal activity, faults in the mountains are developed, rocks are broken and weathered seriously, wet and dry seasons are distinct, and heavy rains are concentrated. Promote the sudden occurrence of landslides and mudslides. An earthquake of magnitude 9.0 occurred in Nepal this time. So far, there have been five aftershocks of magnitude 6 or above after the earthquake, among which Tangshan earthquake is more destructive.

4, preliminary understanding of the correlation of various geological disasters.

Various geological disasters not only have their own formation, development and disaster-causing laws, but also have certain correlations among disasters and between disasters and other factors. There may be several geological disasters in an area, and they are related in origin. For example, in the process of a disaster, there is often a primary main disaster that induces other disasters. For example, earthquakes cause disasters due to the destruction of production and living facilities, and at the same time cause ground fissures and fires. Due to casualties and the destruction of medical facilities, it may cause epidemics. Human activities and their impact on the natural environment can indirectly or directly induce geological disasters. For example, the destruction of vegetation by human beings increases the amount and speed of surface runoff, which is an important reason for the increase of debris flow frequency. Large-scale human engineering activities cause landslides and other disasters from time to time.

5, the defense of geological disasters

In today's world, due to the rapid population growth and intensive economic development, coupled with the increasingly serious destruction of the natural environment by human beings, the frequency and intensity of geological disasters are increasing. This has aroused widespread concern of governments and people all over the world.

Student 5: Strengthen scientific research on geological disasters and establish a disaster monitoring and forecasting system.

Student 6: Strengthen the management of geological disasters and establish and improve the system of disaster reduction policies and regulations.

Student 7: Take some precautions. For example, improve the seismic strength of buildings; Carry out slope protection works to prevent landslides and collapses. In addition to engineering measures, comprehensive control measures such as afforestation can be taken, such as restoring surface vegetation, improving ecological environment and controlling soil erosion, so as to reduce the frequency and intensity of debris flow or landslide.

Student 8: Actively carry out publicity and education on disaster prevention and mitigation, raise public awareness of environmental protection and mitigation, and carry out and do disaster prevention and mitigation work more effectively.

6. Earthquake protection exercise.

Third, the class meeting summary.

Speech hosted by the class meeting on earthquake prevention and disaster reduction (3)

Li: Next, I declare that the 1 1 logistics management class meeting on earthquake prevention and disaster reduction will begin now.

W: Now, the plates are more and more active and earthquakes are more and more frequent. In the past ten years, there have been several earthquakes in China, the most serious of which are Wenchuan earthquake, Tangshan earthquake and Yushu earthquake.

Li: Let's review it together.

Wei:1July 28th, 976, at 03: 42: 53.8 Beijing time, an earthquake measuring 7.8 on the Richter scale (moment 7.5) occurred in Tangshan and Fengnan (east longitude 1 18.2, north latitude 39.6) in China, with the epicenter intensity of degree and the focal depth of. The earthquake lasted about 12 seconds. The feeling range reached 14 provinces, municipalities and autonomous regions, among which Beijing and Tianjin were seriously affected. The energy generated by a strong earthquake is equivalent to the explosion of 400 Hiroshima atomic bombs. The whole city of Tangshan was razed to the ground in an instant, and the city's transportation, communication, water supply and power supply were interrupted. There was no small-scale foreshock in the Tangshan earthquake, and it happened in the early morning when people were asleep, which made most people unprepared, causing 242,000 deaths and164,000 serious injuries, ranking first in the history of earthquakes in the world in the 20th century.

Li: At 28: 04 on May 6, 2008, a strong earthquake of magnitude 8 occurred in Wenchuan County and Beichuan County of Sichuan Province. The earth shook, the mountains and rivers shifted and were devastated. Where are you going ... in the southwest, the whole state is mourning. This is the most destructive and widespread earthquake since the founding of New China. The earthquake affected about 500,000 square kilometers in China! In order to express the deep condolences of the people of all ethnic groups in China to the victims of the Wenchuan earthquake in Sichuan, the State Council decided to hold May 19 to 2 1 2008 as a national mourning day. Since 2009, May 12 has been the National Disaster Prevention and Mitigation Day.

Wei: Two earthquakes occurred in the morning of April 10 in Yushu County, Qinghai Province, with the highest magnitude of 7. 1, and the epicenter of the earthquake was near the county seat. By the afternoon of April 25th 17, the Yushu earthquake had caused 2220 deaths and 70 people were missing. In order to express the deep condolences of the people of all ethnic groups in China to the compatriots killed in the Yushu earthquake in Qinghai, the State Council decided to hold a national mourning activity on April 20, 20 10. The national and foreign embassies and consulates lowered flags at half mast and public entertainment activities stopped.

Li: It's refreshing to hear these exciting figures. Tens of thousands of fresh lives disappeared instantly, and many people were separated from their families and destroyed. The earthquake left people with endless pain.

W: We can't stop the coming of natural disasters. The only thing we can do is how to minimize the damage. Now let's talk about how to deal with an earthquake (4-6 people).

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Li: The students all speak very well. It seems that they still have a certain understanding of this knowledge. Let's take a look at PPT first to learn some knowledge about earthquake prevention and disaster reduction.

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Wei: Next, please enjoy a poem-I have a strong motherland.

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Li: Actually, there were precursors before the earthquake came, but these subtle things were not noticed, and even if they were noticed, they were not taken seriously. Now, I want to add something for the students. Please look at the big screen.

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W: These subtle differences require you to have a pair of eyes that love to discover. Let the students complete the knowledge of earthquake science and see what they have learned in this class. Song: Never give up.

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Li: Let's end the class meeting by inviting the head teacher to speak at the class meeting.

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