1, human is a material structure, mainly composed of carbon and water. These substances exist widely in the universe almost everywhere, in addition to the more than 100 elements and minerals discovered by us, there are some that are not discovered by us. As we human beings continue to develop and progress in the universe, one day human beings will be able to defeat the universe. Environmental pollution, population expansion has made mankind suffer enough, if we do not take effective measures to curb this momentum, I am afraid that the future destruction of the earth, not a planet, but human beings themselves.
Until I saw the movie "The Universe and Man", I really saw the greatness of the universe and human progress, and I felt a little unimaginable, and I had to sigh at the magic of nature and admire the scientists. They spent their entire lives unraveling the mysteries of the universe. Time is passing, human beings are making progress, people have more and more understanding of the space, and more and more profound understanding of the extraordinary universe. After learning Marxist philosophy, we know that matter is the origin of the world, and the material unity of the world is the cornerstone of Marxist philosophy. But it's just booksThe above text tells us that after watching the film "The Universe and Man", I understood the true meaning of the sentence "the world is material".1, lightning protection theme class meeting teaching plan 1 should pay attention to prevent electric shock: buy qualified electrical appliances. Do not touch the power switch with wet hands. Indoor lights or other electrical damage should be repaired or replaced in time. Do not touch the wires and damaged parts that have been connected to the power supply. Do not randomly connect wires and use high-power electrical appliances in the dormitory, strictly prohibitedElectrical sockets are placed on the bed.
2, lightning protection theme class meeting teaching plan 1: Precautions to prevent electric shock: purchase qualified electrical appliances to ensure safety. Avoid touching the power switch with wet hands. Electrical damage repair or replacement in time. Do not touch live wires and damage. Do not randomly connect wires and use high-power electrical appliances in the dormitory, and do not place electrical sockets on the bed.
3, courseware "How to protect against lightning"; The scene layout of the scene (that is, the game venue) : a big tree, a telephone pole, a house, the formation of the rain: with silver wrapping paper cut into aA long, small band hung from the roof of the yard and floated down; Preparation for scenario exercise: an electric iron, a piece of clothing with a hole; Rabbit headdress, wooden basket 40 each; Music "It's Raining".
4, can not hide under the tree; You can't hide under a telephone pole; Don't hide in the wet; Don't hide in high-risk areas; Don't panic don't look around; Find a low place to squat down, the thunder did not move again, will be able to safely return home.
5, the following is my collection of "lightning protection" theme class meeting teaching plan, for reference only, I hope to help you. "Lightning protection" theme class meeting teaching plan 1And agricultural and animal husbandry production activities. In this sense, astronomy is one of the oldest natural sciences. The history of astronomy can be traced back to the beginning of human civilization. As an ancient natural science, its origins lie in the observation of celestial bodies to navigate, time and understand the changes of seasons. In the early days, the core of astronomy was astrometry, the attempt to understand the position and motion of celestial bodies. In the 16th century, the heliocentric theory of Copernicus opened a new chapter, and astronomy began to get rid of the shackles of religion, develop to celestial mechanics, and explore the dynamic principle of celestial motion.
3, the twentieth centuryIn the last 50 years, with the development of detectors and space technology and the deepening of research work, astronomical observation has further expanded from visible and radio bands to various electromagnetic waves including infrared, ultraviolet, X-ray and gamma rays, forming multi-band astronomy and providing powerful observation means for exploring the physical nature of various celestial bodies and astronomical phenomena. Astronomy has reached a whole new stage. 4. The origins of galactic astronomy date back to 1888, when the New General Catalogue of Nebulae and Star Clusters and the Supplement first recorded a large number of non-stellar and non-single-star objects, most of which were later confirmedFor extragalactic galaxies, laying the groundwork for this discipline.