Expository essay 5 about interesting things around us

In every golden autumn season, we can find something interesting and beautiful, let's observe and observe.

In autumn, the beautiful Maple Leaf Sister dances elegantly in the air with the song of Uncle Autumn Breeze, and the rows of pine brothers are still standing in the flowers next to the road like a policeman directing the endless flow of cars on the road, protecting everyone's safety. In the golden field, there is the sound of wheat singing, there is the sound of small ants carrying things, and the golden field is like a sea of joy.

The colorful orchards are bustling with apples, persimmons, oranges, pears, and dragon fruits.

In the fall, my good friend and I are going to go to the backyard to pick maple leaves, and the maple leaves in our backyard are beautiful, with yellow and red, yellow and green, green and red, and dark red and light red, etc.

The happiest thing about autumn is flying kites, the colorful kites swaying in the sky are so fun, I am holding the string, running fast in the backyard, my dad is looking at me with a smile on his face.

Snowflakes are beautiful crystals that cling together in clumps as they fall, forming snow flakes. The size of a single snowflake is usually between millimeters. Snowflakes are light, weighing only grams individually.

No matter how light and small the snowflakes are, how wonderful the ants are thousands of forests, its crystals are regular hexagonal shapes, so the ancients had the saying that "there are more than five flowers of plants and trees, and six snowflakes are produced". How beautiful and light the snowflakes are! I'm getting more and more fond of snowflakes, and it would be a pleasure to see the land covered with snow and the trees covered in silver again.

"Ruixue Zhaofeng Year" is a widely spread agricultural proverb in China. In the north, a thick, loose layer of snow covers wheat like a quilt to keep the wheat warm. The nitrogen in the snow is easily absorbed and utilized by crops.

The low temperature of snow water can freeze the pests that overwinter on the surface, and it also brings benefits to agricultural production. Therefore, there is another agricultural proverb: "In winter, the wheat covers the three-layer quilt, and the next year sleeps with steamed buns." ”

Snow has a wide range of effects, but snow has great benefits for humans. First of all, it is conducive to the growth and development of crops. Because snow conducts heat very poorly, the soil surface is covered with a snow cover, which can reduce the transfer of soil heat and block the invasion of cold air on the snow surface, so the crops protected by snow can safely overwinter.

Snow also stores water for crops. In addition, snow enhances soil fertility. It has been determined that every 1 liter of snow water contains about grams of nitrogen.

When snow water penetrates the soil, nitrogen fertilizer is applied once. Feeding livestock and poultry with snow water and irrigating crops can yield significant benefits.

Snow is both good and harmful, and in the mid-spring season of March and April, it suddenly snows heavily due to a cold wave. It will cause freezing cold. Therefore, the agricultural proverb says: "Wax snow is a treasure, and spring snow is not good." ”

Friends, after listening to my introduction, do you like and understand snow more?

One of my favorite classes is the Nature class that only happens every Wednesday. Every time we go to class, the teacher will give us different "surprise" content, and recently taught us the launch base, the elf somersault, and the "paper".

Shotgun ......Among them, my favorite is the "Water Rocket Course".The materials are very simple, there are holding bottles, slides, thick cardboard, adhesive tape, ......, using the physical phenomenon after adding water and pumping to make the rocket lift, as well as gravity.

Can make a water rocket produce a ballistic flight, and a way to land while flying.

Mr. Wu's classes are very interesting and there is always a way to grab our attention. The teacher said: "Water rocket launch is actually very simple, as long as it comes first.

Pour water into the water rocket, then attach it to the launcher, pump it up again, and press the handle ......Shout! With a bang, the water rocket rushed out of the mission. I remember one time, Mr. Chen, he saw us playing happily.

When the arrow, I also helped one of the groups to cheer up, and later, I heard "Poof! With a bang, the water rocket flew far into the air, but it turned out to be "stuck" on the coconut tree, and the classmates were dumbfounded, not knowing what to do? It's over, no.

After a long time, the fire and water arrow fell, and the crisis was finally resolved.

During the course experiment, I found that the secret of the launch of the water rocket is that if the water of the water rocket is poured into very little, it will be almost 20 times when pumping; If there is too much water, it will take about 80 pumps. Moreover, if the water rocket wants to shoot far, in addition to the air pressure, it is actually related to the launch pad, if the angle of the launch pad is high, the range is relatively far; If the angle is small, fly closer.

Many science games are very interesting, especially this water rocket course, which is the most memorable class for me, the teacher not only let us learn the knowledge of force, reaction force, air resistance, and air pressure, but also makes me full of anticipation to learn, relax and forget the troubles of the day, and fly away with the water rocket!

Chinese The motherland's language has a long history and a long history, and I think it is so colorful, so vivid and interesting.

The words of the Motherland are interesting. Many characters can be understood by looking at the glyph, such as the word "blade", which means "knife edge" at a glance. "Hugh" means that a person rests under a tree; "Prisoner" means that a person is imprisoned in a house.

According to the teacher, there are many words that have evolved from stick figures, such as "mountain", "water" and "eye".The glyphs of the Chinese characters of the motherland are so interesting!

The words of the Motherland are interesting. People who don't understand it can easily "fall for it".In class, the teacher told us this joke:

A foreign teacher explained the word "thing" to students in a Chinese class, and he said eloquently: "."stuff"The word "direction" in China sometimes refers to all kinds of objects, but it must not refer to people, for example, I am not"stuff"Neither are any of you here"stuff"……Before he could finish speaking, the laughter of Chinese students was heard. And foreign teachers and foreign students are still inexplicable.

This joke fully illustrates the fun and complexity of the meaning of Chinese words.

What happens around you is like a fragrant flower, a colorful box containing little secrets, come and see "An Interesting Thing Around Me" that I brought a stool for you from our essay network. If you want more interesting essays on the sparrow, please continue to the **** essay column.

My dad was very fond of fishing, but I didn't like it because every time I went out fishing with him, I was sitting by the pond and it was very boring and boring and I couldn't do anything else, so I thought fishing was boring.

One time I went fishing with my dad again. At first, I was very bored. After a while, my father caught a few little red crucian carp, which were very beautiful, and I became interested, and my father saw that I was very interested, so he said to me:

You can try it", and I grabbed my own fishing rod and started fishing. My eyes were fixed on the float, and suddenly the float slammed down, and I lifted the rod upward, haha, a little red crucian carp was hooked! Not to mention how happy I am!

Then I caught a few small fish in a row under my father's guidance. I have found more and more that fishing is a very technical job, not only to know how to adjust the drift, but also to learn to observe the movement of the drift, and to be noisy and quick when lifting the rod, only by mastering these can we catch good fish.

In fact, many things in life are like this, you think it's boring, but it's actually fun, and the most important thing is "you have to discover"!

What happens around us is like a fragrant flower, a colorful box containing little secrets, a clear and transparent stream, and a colorful dream. There are a lot of interesting things around me, so let me pick out one for you to hear.

My little brother is interesting, and through this incident, my little brother has learned some common sense.