The director asked us to open this big box and see what was inside. When we were about to open the box, I seemed to hear the sound of "help", as if it were coming from the box. I immediately opened the box with the soldiers and found a small whale inside. The little whale saw that we really talked. He said, "There is a shark palace not far from here. I was caught by a shark in the shark palace. They caught me, put me in a box, sent me to their palace and gave me to their king as food. Because I am too young to beat them, thank you so much for saving me. "
At this time, I was thinking: these sharks must have found us. They couldn't swim fast with big boxes, so they put them down and swam back to the fucking palace. There must be some small whales they caught in their palace, packed in boxes and transported to the palace. I said to the little whale, "Little whale, there must be a little whale caught like you in the shark palace." Go to the big whale, tell them your situation, and let them come together to save your companion. " The little whale nodded and we sent the little whale out of the submarine. The little whale swam out of sight at once.
After a while, the little whale swam back, followed by several big whales. Our submarine followed the whale to the shark palace. The sharks in Shark Palace saw so many whales that they all ran for their lives. We rescued all the babies caught by sharks.
Ocean adventure composition ocean adventure
I am a member of the marine environmental protection team. It is my task to protect the marine environment and regularly check the marine ecological conditions.
One morning, two team members and I took a patrol boat to inspect the sea as usual. When our ship sailed to the coast of Yamba, New South Wales, Australia, the seawater detection system suddenly made a "beep". When the alarm sounded, I quickly pulled up the computer monitoring image. I was startled when I saw the screen. At ordinary times, the blue sea is gone, and layers of white foam are piled up on the sea surface, drifting with the tide, like taking a bubble bath in a huge bathtub. Turbid and frothy sea water washed up on the beach, hitting the vacationers on the shore, and people fled in panic. What happened? What's that white thing? Why is this happening? Will it be dangerous? A series of questions appeared in my mind. I immediately reported the danger to my superiors, who instructed us to find out the situation. In order to find out the reason, we decided to take some foam samples ourselves and walk into the sea of "cappuccino". My team members and I are sweating, and I don't know how harmful this unknown substance is to human body. We put on blue diving suits, long plastic gloves and protected the environment, and we dived to the bottom of the sea with two experimental glass bottles in our hands. It is found that the sea water on the seabed is still dark blue, which is much more turbid than usual. White foam only floats on the surface of seawater, and has no smell of * * *. We quickly got the samples, and then sent a signal to the headquarters, waiting for the arrival of experts.
After careful examination by experts, it was found that this unknown white foam was formed because a large amount of fresh water flowing from rivers entered the ocean and interacted with pollutants in the ocean (such as rotten plastic products, fish and seaweed excreta, etc.). In addition, under the action of strong airflow, this area has formed huge waves on the sea surface, and the current makes the foam rotate rapidly and gather on the shore. The bigger the waves, the more bubbles there are, which is not particularly harmful to the human body.
Knowing the expert's conclusion, our hanging hearts can only be put down, but there are still faint worries in our hearts. Now the ecological situation of the ocean is not optimistic. The reason is simple, that is, those unconscious people are constantly destroying it. Almost every day, it is reported that factories have polluted rivers again, and red tides come as scheduled every year. The sea has become turbid, and even the sea is full of toxic substances. This is one of the most serious and urgent problems in marine environmental protection today. I really hope that everyone will consciously defend the ocean and our blue land!
Ocean Fairy Tale Composition Children's Music Mime "The Sea Laughs"
Character setting: boy a
Boy B.
Girl C.
Clown fish a
Mama clown fish
Other clown fish
A group of little Hai Wa living by the sea.
Scene introduction: 1, seaside
2. In shallow water
Script:
First act
When the curtain rises, the breeze blows and the waves sound. Against the backdrop of green coconut trees, brown rocks, soft beaches and blue oceans, a group of little Hai Wa came to the seaside and danced happily with cheerful music.
Hai Wa, Hai Wa, barefoot;
Came to the seaside and rushed to put it on the bottom of the sea.
Two little hands, rowing like paddles,
Multicolored lifebuoys, red, yellow, blue and green;
Like a painting in the water ...
【 The music faded to nothing, and Hai Wa Jr. stopped in front of the background with various movements. Boy a came on stage with the sound of waves and music. ]
Boy A: Hey, come on! There are many shells here.
[Boys B and Girls C go on stage]
Boy B: Look, how beautiful this shell is!
Boy A: Big conch, use it as a microphone. Clownfish can definitely hear it.
Boy B: You mean the clown fish in Finding Nemo?
Boy a: yes.
Girl C: I like clown fish best.
Boy A: Maybe there are clown fish in this sea.
Boy b: hey! I have a lot of food in my bag. Let's throw it into the sea and feed it to them.
A-C: OK! All right!
[Three people take out the food and scatter it into the sea, throwing it in together with the packaging bags. ]
Boy B: Look, there is a shadow over there.
Boy a: where is it? Where is it?
Boy B: Over there, that's my father's oil rig.
Boy A: Oil won't flow into the sea, will it?
Boy B: I don't think so.
Girl C: Little friends, let's go somewhere else to play!
A: OK!
[Under the cover of lights and scenery, the small beach guard exits]
Act ii
[The sound of waves and music sounded, and a group of cute clown fish went down the river under the guidance of their mother. ]
Clownfish song and dance performance:
There are a group of cute clown fish swimming around in the water.
Watch the grass wag its tail, watch the grass wag its tail and swim with its head up. ...
Mother Clownfish: Children! Come on! Come on, don't fall behind.
Clownfish: Where are we going?
Mother Clownfish: We need to get out of here before the oil floats.
[Clown fish swims quickly under the guidance of mother]
The stage lights were all dark, and a clown fish stuck in oil waddled under the pursuit of light.
Clownfish A: Mom! Wait for me, mom! Wait for me, mom! Mom!
【 Clownfish A in trouble falls into a coma with shouts. ]
Act iii
[On another beach by the sea, girl C appears in the gentle sound of the waves]
Girl c: hey! Clownfish.
[The little girl found the clown fish washed to the beach by the waves]
Come on! There really is a clown fish here!
[Three people gather around the clown rain to observe carefully]
Boy B: It's all black and dirty.
Boy A: It's oil!
Let's have a look.
[Clownfish A wakes up under the discussion and touching of three people]
Clownfish: Ah! What are you doing?
Girl C: Don't be afraid, we are here to help you.
Clownfish A: I don't believe it. You humans always make rubbish, pollute the ocean and destroy our living environment. If it weren't for you, I wouldn't be separated from my mother. Woo-hoo,,,,,, Woo-hoo,,, I want my mother, I want my mother,,,,
A, B and C: Don't cry, don't cry.
Boy A: Let's tidy up first.
Of course.
[Three people help clown fish get rid of oil pollution and put it back into the sea]
Clownfish: Thank you. Goodbye!
Boy B: Clownfish, will we meet again?
Clownfish: As long as human beings stop polluting and destroying the environment and give us a blue ocean, we will definitely come back.
A, B and C: We remember. Goodbye!
【 Clownfish swam far under the noses of three people 】
Boy A: Go and tell your father not to pour waste oil into the sea again.
Boy B: I will definitely tell him.
Girl C: Let's return the clown fish to a clean home together.
A: OK!
Act IV
[Music starts again, and Hai Wa Jr. takes the stage to perform singing and dancing.
Hai Wa, Hai Wa, barefoot,
Come to the seaside to play with a small bamboo basket,
Don't catch small crabs, don't catch prawns,
Compared with picking up garbage, peels, waste paper, cans and plastic bags,
Nothing ...
Halfway through the song, the music faded, and three protagonists appeared on the stage, among which the boy A was carrying the "care for the environment" sign. ]
Boy B: I have good news for you. My father cleaned up all the waste oil dumped in the sea.
Girl C: Great, look! The sea has turned blue again.
Boy A: Little Hai Wa, let's clean up the dirty things on the beach!
Everyone: ok!
[Clownfish frolicking in song and dance]
Children: clown fish, come on! Come on!
Clownfish: We are back.
The children and the clown fish danced happily in the music, and finally all the actors ended up with the wooden sign of "caring for the environment". ]
During the Spring Festival, I came to Ocean Park in Chengdu and saw the wonderful underwater family.
As soon as I entered, the strange fish in the green water caught my eye. There is a huge turtle sleeping motionless in the water! You should have seen Finding Nemo! There is a red and white fish in it. I saw this fish with my own eyes. It looks like a leaf with a fan in it. It looks very small here. And man-eating crabs. They are small and have long and big feet. They are crawling on the glass with their teeth bared, as if to eat you with their mouths open. I took one look, turned and ran away in fear. There are also small jellyfish, whose bodies are transparent, like an umbrella, with many tentacles underneath. Don't underestimate them. If you touch them, you will get hurt, because its tentacles are poisonous. After a while, a long, flat black sea snake swam over. There is also a huge unknown fish swimming over. It's strange that there is a fish swimming closely behind it. Later, I learned that this kind of fish specializes in fish dung, also known as "sea sweeper".
The seal show has begun. Seals are very small. It's only four years old. Its name is "Mike". Mike is very clever. He is black all over and has some hair. His favorite thing is shooting. When the animal trainer's uncle throws the ball into the air, "Mike" can catch it quickly, and it hits every shot, even in the water. He is also a dancer, circling in the water, jumping in the air and dancing street dance. He can clap his hands, salute, bow and be shy. His naive appearance is very cute. Many children are vying to take photos with him as a souvenir. I couldn't help running. He leaned his head on my shoulder, gently put his mouth on my face and took a photo with me kindly. I am so excited.
What did you say?/Sorry? Do you want to go?
What are the significance and benefits of papers on ocean exploration?
Five years after graduation, we have many uncertainties and many possibilities. Fenmu
This composition about the ocean is 200 words.
During the summer vacation, my grandparents, my parents and I went to Qingdao to attend my uncle's wedding. Uncle took us to see the sea. How big is the sea? It is boundless and choppy. My mother took me to the seaside to take pictures. I stood happily on the beach and took a picture with a big smile on my face.
When we are all finished, my mother will take me to pick up shells. While we were bending over, a wave came and splashed our clothes. Ah, the sea is too cold. Just as the waves receded, I suddenly saw many shells on the beach, so I picked some. I want to take the shell home and share it with my companions, so that they can share my happiness.
The ocean is the mother of life on earth. It was she who created life and gave birth to it.
When the astronauts flying into space look back at our earth, they find that the earth is a beautiful blue "water polo" in the vast universe. For this reason, I became very interested in the vast ocean, so I carefully read the book Towards the Ocean. After reading Towards the Ocean, I was surprised to find that the ocean is not only vast and unfathomable, but also extremely rich, and it is a huge treasure house of resources. It is rich in gold, manganese, magnesium, tin, oil, natural gas and so on. Even the very limited uranium resources on land are as high as 4.5 billion tons in seawater, which is 4500 times of the land reserves.
With the rapid increase of population and the continuous deterioration of ecological environment, human beings are facing the threat of food shortage, and people have turned their attention to the ocean. The ocean has inexhaustible biological resources. It is conceivable that there will be more and more high-protein marine foods in the future, which will greatly enrich our human food categories. The ocean is also a natural transportation line. Although it has all kinds of dangers, it is an unimpeded natural water avenue, connecting most countries and regions in the world. There are many advantages to opening up sea routes, and there is no need to requisition land or invest huge amounts of money and manpower. Shipping can transport goods of all shapes, shapes and sizes. More importantly, the friction of sea water is very small, and a small power can push a huge ship forward. This not only saves extra fuel consumption, but also saves freight. How do road and rail transportation compare with sea transportation? (Suiling Education Letter
About the ocean? Ground materials, etc. Sometimes, turbidity current deposits formed on continental slopes can extend to the movement of seawater in deep-sea plains, the chemical reaction of dissolved substances in seawater, and the destruction and construction of coastal and seabed rocks and topography by marine life. Marine geological processes include marine erosion, transportation and deposition. The movement modes of seawater are mainly waves, tides, ocean currents and turbidity currents. These four kinds of seawater movements are important driving forces of marine geological processes. Due to the influence of seawater depth and seabed topography, they form different hydrodynamic zones in the ocean. The coastal zone and continental shelf of shallow sea are hydrodynamic areas dominated by waves and tides, while continental slope and deep-sea basin are hydrodynamic areas of ocean currents and turbidity currents. These four mechanical forces can produce marine erosion, transportation and deposition. Mechanical marine erosion is the destruction of coast and seabed caused by hydraulic impact (also called erosion) when seawater moves and abrasion caused by debris carried by seawater. There are three ways of mechanical handling of seawater: ① moving, coarse debris rolling and sliding along the bottom; (2) jumping, that is, coarse debris moves intermittently by jumping; (3) Suspended matter, tiny sundries suspended in water. These three ways vary with the strength of hydrodynamic force and the particle size of debris. Sometimes three modes exist at the same time, sometimes transition and jump coexist, or only pause. When the mechanical power of seawater disappears, precipitation will occur. There are mechanical deposits everywhere in the ocean, but continental shelf and continental slope are the most abundant. The chemical action of water is mainly the dissolution of soluble rocks (also called dissolution) and the chemical reaction of dissolved substances in seawater to form sediments on the seabed.
There are not only many creatures in the ocean, but also many kinds. There are creatures in seawater at different depths, but the seawater on the continental shelf is the most prosperous. The geological process of marine life mainly refers to the deposition of biological remains on the seabed.
Among the three geological functions of the ocean, marine erosion is the most obvious and intense in coastal areas, and sedimentation is the main function of the vast ocean basin. The ocean accounts for about 7 1% of the earth's surface area, and it is the largest deposition site on the earth, with a large number and variety of sediments. There are ancient marine sediments in different geological periods in most areas of modern mainland. Studying marine geological processes, especially seabed sediments, is of great significance for understanding the development history of the earth and developing and utilizing seabed mineral resources. Geological Action of Waves Waves (also called waves) are regular ups and downs of seawater due to wind friction. The size of waves is related to the strength, persistence and openness of the sea. Usually, the wavelength of waves ranges from tens of centimeters to hundreds of meters, and the height of waves ranges from several centimeters to more than ten meters. The fluctuation range of water quality point and the energy related to it decrease with the increase of water depth. They have been greatly reduced when the water depth is half wavelength, so the depth of half wavelength is usually taken as the lower limit of wave influence. In the shallow water area with water depth less than half a wavelength, waves are deformed or even broken due to seabed friction, and become broken waves, forming a complex nearshore current system, which is called broken wave flow. The impact force of ocean waves can reach 9.80665× 104 Pa to 29.4438+0995× 104 Pa. When the wave motion direction is perpendicular to the coast, it produces inflow and outflow perpendicular to the coast; When the wave motion direction is inclined to the coast, the coastal current parallel to the coast is generated due to the refraction of the wave. Waves and their various waves and currents under different conditions are important driving forces in shallow water. Surge current will directly damage the coast. When seawater permeates into rock cracks to compress air, the expansion force of air intensifies rock cracks. Debris carried by waves is also a tool to wear away rocks. The above-mentioned mechanical damage of sea waves to coastal and seabed rocks is called erosion. The movement of gravel with waves is the carrying function of waves. Wave erosion and transportation often occur at the same time. When the hydrodynamic force of waves decreases, the transported objects are deposited.
When the waves scour the rock bank, a sea erosion trough is first formed at the water contact. The groove expands and the upper part collapses, forming a sea cliff. The coast retreated a distance. With the retreat of the steep cliff, the bottom of the trench expands into a platform slightly inclined to the sea, which is called a marine platform. When the sea level drops or the land rises, the platform exposed to the sea presents a stepped zone, which is called the ocean terrace. Under the action of waves, the slope of the platform gradually slows down. Once the energy of waves can't hit the coast and is dispersed and consumed in friction, the destructive power of waves on the seabed rocks in the coastal zone tends to zero. At this time, the cross section of the coastal zone is called the coastal equilibrium section. Due to the differences in rocks and structures that make up the coast, the anti-corrosion ability is also different, and erosion can also form caves, bridges, stone pillars and other landforms.
On the gentle sandy coast, waves mainly carry and deposit gravel through inflow and outflow or coastal current. The inflow advances to the land along the beach, and after the inflow power is exhausted, the backwater retreats to the sea along the slope under the action of gravity. The incoming flow brings the gravel to the shore, some coarse ones stay at the end where the waves reach, and some fine ones flow to the sea with the return flow. Debris is is constantly rounded and classified in the back and forth transportation of inflow and outflow. When the power of seawater disappears, they pile up along the coast into gravel beaches, beaches and underwater sandbars. The debris carried along the coast is mainly sand, which moves longitudinally roughly parallel to the coast. This longitudinal movement is most active at a depth of about 4 meters. Its speed depends on many factors, usually increases with the enhancement of waves and the decrease of the particle size of the transported object, and it is the fastest when the wave motion direction intersects the coast at an angle of 45. If the coastal current meets the bay, the velocity decreases, and the sediment is deposited at the mouth of the bay, forming a sand mouth with one end connected to the land. The height and elongation of the sand mouth can form a barrier in the coastal zone and form a semi-isolated lake inside.
The geological function of tides The periodic fluctuation of seawater under the tidal force of the moon and the sun is called tide, and the horizontal movement of seawater at the same time as the periodic fluctuation is called tidal current. Tides have changed the range of the breaking wave zone, and enhanced or weakened the marine erosion in coastal areas. On the flat silt and muddy coast, tidal current can affect a wide range. The tidal current stirred the sediment, washed the beach and etched a slender tidal ditch. In narrow straits and estuaries, the tidal height surges and the velocity increases. When the tide ebbs, the tide rushes down, digging up the sediment at the bottom of the canyon or estuary and bringing it into the sea.
Geological function of ocean current The large-scale flow of seawater along a fixed path is called ocean current or ocean current. The surface ocean current is mainly caused by the density difference between wind and seawater, and the thickness of the water layer is generally less than 100 m; Deep-sea currents are mainly related to seawater density. Generally, the speed of ocean current does not exceed 0.5 ~ 1.5 m/s, and decreases with the increase of water depth, which constitutes the so-called isodepth current with different water depths and different velocity. The geological function of ocean current is mainly to slowly transport suspended matters such as sediment and clay from shallow sea to deep sea. The velocity difference and entrainment capacity difference of equal depth flow affect the particle size and entrainment mode of its entrainment. In addition, the different deposition rates of transported substances and the appearance of turbulence, etc. All these factors determine the distance of ocean current transportation.
The geological process of turbidity current is a kind of high-density water flow containing a lot of suspended solids, which mainly flows down the bottom slope by its own weight. Turbid flow has a great carrying capacity. Turbid flow with a velocity of 3 m/s can carry rocks weighing up to 30 tons. There are a lot of soft mud and loose debris saturated with water on the continental slope. Under the induction of external factors such as wind and waves, tidal current and submarine earthquake, these soft mud can easily liquefy and flow down the slope. Therefore, turbidity current mostly comes from the outer edge of continental shelf or estuary. When the turbidity current moves along the continental slope to the deep-sea plain, it etches a narrow deep-sea canyon with deep bottom and steep walls. Turbidite flows out of the canyon and reaches the deep-sea plain, its speed drops sharply, and a large amount of debris accumulates, forming long or tongue-shaped sediments or fan-shaped land, which is called turbidite fan. Turbid sediments are composed of typical terrigenous debris, and there are biological remains in shallow water, which are classified and layered.
Seabed sediments marine sediments can be divided into three types: mechanical, chemical and biological. There are sediments all over the sea floor, but there are many kinds of sediments on the continental shelf. The continental shelf is the most important sedimentary area in the ocean. Marine sediments are mainly debris brought into the ocean by rivers and winds, followed by organic components such as biological debris and microbial decomposition substances. In addition, there is a small amount of volcanic ash in the sediments, as well as meteorites and cosmic dust particles from space. Marine sediments are closely related to the marine sedimentary environment. Generally, according to the marine sedimentary environment with different seawater depths, marine sediments can be divided into: coastal zone (the water area between the * * * line and the low tide line), shallow sea area (the water area with shallow low tide ~ 200m), semi-deep sea area (the water area with depth of 200 ~ 2500m) and deep sea area (the water area with water depth greater than 2500m).
① Coastal sediments. It is mainly mechanical debris distributed in beaches and tidal flats, that is, sand, biological bones and shell debris with different particle sizes. Chemical deposits such as rock salt, gypsum and potassium salt can be formed by evaporation in lakes with dry climate. Under humid climate conditions, the lake can become a coastal swamp, and a large number of coal-forming materials accumulate.
② Shallow sea sediments. Shallow sea area accounts for 25% of the ocean area, but the sediments in this sea area account for 90% of all marine sediments. There are three types of shallow sea sediments: clastic sediments are mainly sandy, and the particle size of clastic sediments generally decreases from shallow water to deep water, because waves weaken with the increase of sea depth. However, due to the influence of tidal current, ocean current, seabed fluctuation and continental erosion intensity, the grain size of modern shallow sea sediments is not all coarse near the shore and fine far from the shore. Biological deposition is mainly sediment formed by biological relics, and its composition is mainly calcium carbonate. In the tropical and subtropical warm seas, there are coral reefs with coral skeletons as the main part, supplemented by the bones and shells of other creatures, which are called coral reefs. Chemical deposits are mainly colloids of oxides and hydroxides of iron, manganese, aluminum and silicon from the mainland, which flocculate into oolitic or pea-like deposits when they meet seawater electrolytes.
③ Semi-abyssal zone sediments. Usually mainly terrigenous mud, with a small amount of chemical deposits and biological deposits. In the development area of turbidity current and submarine ground slip, there may be coarse debris from shallow sea, and glacial debris and volcanic debris can be seen in some areas. The most widely distributed sediment on continental slope is blue ooze formed in reducing environment; Red ooze is distributed outside the estuaries of tropical and subtropical coasts, and green ooze is developed at the junction of continental shelf and continental slope.
④ Deep-sea sediments. Usually, plankton remains are dominant, and there are few terrestrial materials. The deposition rate is very slow. The biological sediments in the deep sea area are usually all kinds of biological ooze; Include diatom ooze and radiolarian ooze siliceous ooze; Calcareous ooze includes foraminiferal ooze, pteropod ooze and pebble ooze. In addition, there are deep-sea brown clay and a small amount.
Senior high school English composition, about marine environment, including water, seawater solvents, substances and suspended solids, size and marine animals, including complex systems. Abundant marine biological resources, mineral resources, chemical resources and electric power resources are an indispensable treasure house of human resources, which is closely related to human survival and development.
At present, the main goal of marine protection is to protect marine living resources so as to avoid exhaustion and provide sustainable use for human beings. Special priority is given to the protection of precious and endangered marine life. According to a survey by the United Nations, at least 25 of the world's most valuable fishery resources have been exhausted due to overfishing, killing of non-target animals, allowing ocean hunting, construction of coastal beaches, deforestation and pollution of the marine environment, and whales, turtles, manatees and many other marine animals are in danger of extinction. It is predicted that with the expansion of marine development, marine resources are likely to suffer more damage.
Firstly, the task of marine protection is to prevent the over-utilization of marine living resources, and secondly, to protect the habitats or habitats of marine living things, especially their migration, spawning and foraging, to avoid the coastal areas, beaches, estuaries and coral reefs of carnivores, and to prevent the pollution of heavy metals, pesticides, oil, organic substances and other marine nutrients that are easy to be eutrophic. Maintain the regeneration ability of marine biological resources and the natural purification ability of water bodies, maintain the marine ecological balance, and ensure the sustainable development and utilization of the ocean by human beings.
The composition of the sixth grade about the ocean is 400 words.