How to do a physics submarine in junior high school is simpler

Use a bottle. Put some heavy stuff in it. Make a small opening in the cap.

Use a straw to attach the balloon into the bottle. Close the lid. Make a few seams on the surface of the bottle.

All right. Blow into the balloon to adjust the levitation. Sink up and float.

I learned it when I was a kid watching TV. Also played. Feasible.

Good luck.

Find a plate-like object that is a little denser than water, tie a balloon underneath the object, and leave one available.

Water outside the blowing tube. When the balloon sinks when there is no air in it, control the size of the balloon to levitate and float. It's simple, right?

Junior high school is so difficult!

A submarine is an underwater vessel with a high degree of concealment and fast stealth capabilities, capable of efficient oxygen circulation and navigation control. Here are some high-level steps and raw materials required:

1.Preparation materials: plastic panels, vacuum pumps, electric motors, air tanks, hydraulic cylinders, etc., which can be purchased in the online shop or in the engineering laboratory.

2.Design of submarine structure: According to the function of the submarine, it can be roughly divided into the main structure and various accessories.

The main structure includes a rotating paddle, an electric motor and a hydraulic system. Accessories such as oxygen vessels, gas tanks, transmissions, etc., all need to be optimized to ensure the rationality and stability of the structure.

3.Production of internal mechanical equipment: Starting from the internal mechanical parts such as electric motors, hydraulic cylinders, and transmission systems, they are manufactured and processed one by one. For bridges and different practical problems, different technologies and processing methods are used to achieve practical goals.

5.Assembly control system: The individual components and accessories are connected to each other, and in this step the appropriate connection and isolation protection is required. In addition, an electric motor that has a deep grasp of the basic physical elements such as underwater movement, constant temperature, and oxygen supply can achieve smooth and safe navigation.

6.Vacuum encapsulation: The main structure and all internal parts are encapsulated in a nesting bag, and a vacuum balance pump is used to extract all the air from the company to make it completely oxidized.

Making a submarine requires patience and skill, and the details determine success or failure. In addition, there are many professional skills to learn and practice. Hopefully, the above guide can provide some reference and inspiration for beginners.

1. After getting the mineral water bottle, use scissors or a knife to cut three to four holes at one end of the mineral water bottle;

2. Take three to five coins and fix them on the same side of the bottle with scotch tape;

3. Use a knife (or scissors) to poke a hole the size of a straw on the cap to insert the straw;

4. After filling the bottle with water, you can conduct the test.

Extended information: Large submarines are mostly cylindrical, and a vertical structure (bridge) is usually set up in the middle of the ship, which was called a "conning tower" in the early days, and contained communications, sensors, periscopes, and control equipment. Today's deep-sea submarines or specialized submarines are often no longer designed to do so.

Materials: 1 plastic bottle, 1 long straw, 1 $1 coin, 1 pair of scissors, 1 roll of tape.

How to make:1Tape the coin to the side of the plastic bottle. The number of coins depends on the size of the bottle, and the coins can be distributed by a few more points, as long as they are balanced in front and back, so that the submarine can sink into the water.

Two or three small holes were drilled on the same side of the fixed coin, and when the submarine was inflated, water was drained from these small holes.

2.Make a hole in the cap that is slightly smaller than the diameter of the straw and thread the straw through the hole.

3.Screw the lid with the straw on, and the submarine is ready.

1. Use a mineral water bottle. Drill a hole in the bottle, some glue, a plastic tube.

2. Find a thin hose with a long point.

3. A hole is drilled on the other side of the bottle with the same diameter as the hose.

4. Connect the tube to the hole on the side of the bottle.

The glue sticks well. 5. Put the bottle in the water, one side of the pipe is facing up, the other hole is touching the water surface, inhale with the pipe, and sink. Blow, float.

It can be like this.

Step 1: Find an empty bottle of mineral water. Drill a hole in the side of the bottle Step 2: Find a thin hose with a longer length.

Step 3: Drill a hole on the other side of the bottle (opposite the hole in step 1) and the size of the hole should be the same as the diameter of the tube.

Step 4: Connect the tube to the hole on the side of the bottle and glue it with wax or glue to avoid air leakage Step 5: Put the connected bottle into the water, connect the side of the tube upwards, and the other hole touches the water surface, inhale with the tube"The submarine will sink"...

Blowing up will float up at your request. It's really simple, it's actually the same as a real submarine.

1.Crafting Materials: Empty mineral water bottles.

One, a plastic tube, some wax or glue.

2.Production process:

1) Find an empty mineral water bottle and drill a hole in the side of the bottle.

2) Look for a thin hose with a long point.

3) Drill a hole on the other side of the bottle (opposite the hole in step 1) and the size of the hole should be the same as the diameter of the tube.

4) Connect the hole in the side of the tube and the bottle and glue it well with wax or glue to avoid air leakage.

5) Put the attached bottle into the water, with one side of the tube facing upwards and the other hole touching the water surface.

3.How to use: Inhale with the tube and you will see the submarine sink, blow with the tube and the submarine will float up.

The production of the submarine for the second year of junior high is as follows:

Make the head of the submarine out of plastic sheets, the shape of which can be designed according to personal preference, but ensure that it can be closed. Design a miniature viewing window at the head and use a knife to cut a thin slit in the viewing window. Connect the outlet of the bucket with a plastic pipe, the other end of which meets the head of the submarine.

Pay attention to the tightness in this step to prevent water leakage.

Install a miniature pump and connect it to the head of the submarine, and the suction port of the pump should be connected to the plastic pipe inside the head. Install a propeller in the tail section of the submarine and connect it to the battery and electronic controller vertically.

Fill the bucket with the right amount of water and make sure the water level is higher than the pump's suction port. Take care of safety in this step to avoid the bucket slipping or water splashing out. Turn on the electronic controller and place the submarine in the water. Observe the operation of the submarine, and adjust the controller appropriately if there is a problem.

The submarine is able to operate normally in the water, and can perform basic operations such as floating, sinking and moving forward. When the pump is turned on, the submarine will pump out the water in the storage bucket through the pump to achieve diving; When the pump is turned off, the water inside the submarine is discharged under the push of the propeller and floats up. The operation of the submarine can be flexibly controlled by means of an electronic controller.

Submarine Introduction:

A submarine is a kind of vessel that can sail underwater, and it belongs to the ship category of products, and its main functions include tasks such as underwater exploration, reconnaissance, combat and scientific research.

The shape of the submersible boat is usually long, with a good streamline, which can reduce water resistance and improve speed and maneuverability when driving underwater. The main components of the submarine include the hull, power system, control system, ** system, communication system and life support system.

The main characteristics of the submarine include good concealment, strong maneuverability, high raidability, high endurance, and high degree of automation. Submarines usually have a displacement of between hundreds and thousands of tons and can sail underwater at a relatively high speed.

Submarines usually use a variety of propulsion methods, such as electric propulsion, diesel-powered propulsion and nuclear-powered propulsion, among which nuclear propulsion can provide a longer endurance for submarines. In addition, the submarine is also equipped with a variety of ** systems, such as torpedoes, missiles and naval guns, etc., which are used to perform different combat missions.

Submarines play an important role in modern warfare and can perform a variety of tasks, such as reconnaissance, anti-submarine, mine-laying, attacking surface ships, etc. During World War II, a U.S. Navy submarine destroyed a Japanese Navy destroyer, becoming one of the most iconic examples of submarine warfare in World War II.