300-word speech and 5 scientific articles

# Speech # Introduction Speech is a kind of language communication activity to clarify things or express emotions and carry out propaganda and agitation. Speech is also an improvement of one's communication ability. The following are five 300-word scientific speeches prepared by KaoNet for your reference.

1. Speech 300 words science

Dear teachers and classmates: Hello everyone!

There is science everywhere in life, and if you go against it, you will be frustrated; Dealing with problems scientifically often brings us surprises. If you don't believe me, then listen to my fish farming.

I bought a dozen small fish at home the other day. I regard them as treasures, but small fish always die. What happened?

I put the fish in a big pot and feed them my favorite snacks on time every day. But in a few days, a few fish turned upside down. I don't know why this happened, so I looked it up on the Internet and found that the feed was wrong, so I immediately changed the "food" of the fish into special fish food, and the fish never "ate" and died.

Although most of the fish were "gloriously sacrificed" this time, it made me understand that there is science everywhere in life. Life is inseparable from science, and science is inseparable from life. Let's use science together to make our life better.

Thank you.

2.300 words of speech science

Dear teachers and classmates: Hello everyone!

Science is the driving force of human progress and development, and human wisdom is infinite. Both about the universe and social development show the progress of human science and technology.

We have learned the story of Edison, the scientist who invented the phonograph, electric light, telephone, telegraph, film and so on for human society. He made great contributions to human civilization and progress all his life.

Pick up the boomerang, make the protruding part of the cross-shaped cardboard face your face, and the cardboard face is perpendicular to the ground, and then throw it out. The boomerang will draw a beautiful arc in the air and then return to your hands.

When the pull-back rod is thrown, it will come back because the air flow on the outer surface of the bump is faster. According to Bernoulli's theorem, the air pressure will become smaller where the air flows, so the air pressure will drag the boomerang to fly in the convex direction. When throwing, as long as the protrusion of the boomerang points to your face, it will naturally turn to the throwing place.

Everywhere is inseparable from science, and it is precisely because of science that life will be better. I love science, and I prefer to explore science.

Thank you.

3.300 words of speech science

Hello everyone! Science, these two words are familiar to everyone. But for me, it's not just two words. It is a spirit, a life and an art.

Science is a spirit and a persistent spirit of exploration. Speaking of persistence, I think Edison is the most representative. Everyone is familiar with the electric light he invented. It took him 1600 experiments to succeed. This shows the importance of this spirit to success. It is also a spirit of seeking truth. In the face of strictly determined scientific facts, scientists have the courage to uphold the truth and oppose arbitrariness, hypocrisy and fallacy. It dares to question tradition and authority, stick to the truth and dare to challenge it.

Science is a kind of life, which exists in life. There is no science all the time in life. We are enjoying the scientific achievements in life, from lighters to rockets, which all include learning. Nowadays, we have long been inseparable from science, which is closely related to our lives and is everywhere. We should constantly explore new science and create a more perfect tomorrow. Science makes life more perfect. Science has given us too many perfect lives, so we love life, but we love science more.

Thank you.

4.300 words of speech science

Hello everyone! I am curious about science and want to be a small inventor. One Sunday last semester, my brother xxxx and I went to the Little Newton Experimental Class. This time, I made an astrologer. The teacher explained a lot of knowledge about constellations to us, and then gave us equipment. After that, we started our own little invention. First, a piece of paper was punched with many small holes according to the mark of the star map, and the star map and half a piece of hard paper were glued together. Then two dry batteries are fixed on a large piece of foam plastic with double-sided tape, and the wires are welded to the small bulbs and batteries. Finally, put a small light bulb on the bottom of the paper cup, and stick the star drawing on the foam plastic with double-sided tape to complete the star map. After I finished, I showed the fruits of my labor. I was dumbfounded when I saw the clear constellation pattern on the wall. I am surprised and excited about this strange phenomenon. I have always kept this little invention and made unremitting efforts to become a small inventor.

Science is a double-edged sword, good people use it to benefit mankind, and people of xxxx will use it to destroy our home. I love science. I want to be a scientist, serve mankind with science, make our life more perfect and make the world better!

Thank you.

5.300 words of speech science

Hello everyone! I believe we all had science classes in primary school. Why do we think the experiments taught by our teacher in science class are interesting? Because this is the magic that science brings us. Let me give you an example. Let's do a simple experiment. First, take a plastic bag and shake it in the wind. You will find that the whole bag will swell. Why? Because when air enters the bag, its resistance and wind will support the whole bag, and then something will be used to force the plastic bag filled with air into a basin filled with water. You will find that no matter how hard you try, you won't go down. Why? I believe everyone should know that this bag full of air is buoyant, it is light, it has no gravity, so it won't sink. This is what science tells us. How's it going? It's interesting, so we should love science, because it lets us know more, a lot of things we don't know!

In a word, science involves all aspects of our lives, and it is closely related to us. It is an inexhaustible knowledge and technology. Without it, our present life and study might not be so colorful. Without it, maybe some of our present things will not be discovered and developed by scientists. Let's start with loving science, really like it and make good use of it!

In fact, we have been studying because we love science!

Thank you.