Grape submarine. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
Directory / Entertaining experiences / Experiments in physics

Grape submarine. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Our simple submarine model hangs between the surface and the bottom. But she cannot rise or sink deeper. But no one will take a real boat out of the water to wind or rewind a piece of wire. How does a submarine maneuver? How does it float, how does it sink to the bottom?

The simplest example of such a "maneuvering" submarine is ... a grape in sparkling water!

Of course, you know that sparkling water, as well as soda, lemonade and all mineral waters sold in bottles, are saturated with pressurized gas. But now the bottle is open, water is poured into a glass. The gas comes out in foam and spray. But a part of it still remains. This part continues to gradually stand out, settling with bubbles on the walls of the glass.

Throw a grape into such a glass with freshly poured sparkling water. It is slightly heavier than water and will sink to the bottom. But gas bubbles will immediately begin to sit on it. Like little balloons! Soon there will be so many of them that the grape will float.

grape submarine

But on the surface, the bubbles will burst and the gas will escape. The heavy grape will again sink to the bottom. Here it will again "overgrow" with gas bubbles and rise again. This will be repeated several times until the water "exhales".

You ask, what does the submarine have to do with it? Yes, despite the fact that it floats and sinks in a very similar way. Only the boat has bubbles of gas not outside. She's not swimming in lemonade! The boat has special tanks inside. They are called ballast because they collect ballast - a load that pulls the boat down. This cargo is sea water.

The commander orders to dive. The cisterns are opened, and water rushes into them. She pushes out the air. Hurry, seething air bubbles. They part from the boat like bubbles of gas from a popped grape. And the boat, like a grape, grows heavier and sinks into the depths.

Need to get up again? "Blow out the ballast!" - orders the commander. And the tanks open again, but now compressed air from special cylinders rushes into them. He displaces, drives out the water, he fills the tanks himself. Large air bubbles seem to form inside the boat. And the light boat floats!

Author: Galpershtein L.Ya.

We recommend interesting experiments in physics:

▪ The Secret of the Sliding Pencil

▪ Jet structure

▪ electric cat

We recommend interesting experiments in chemistry:

▪ fantastic bouquet

▪ Frosty pattern on glass

▪ Fast nickel plating

See other articles Section Entertaining experiences at home.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Gaming OLED TV LG OLED 48CX TV 10.03.2021

The Korean company LG presented a new TV OLED 48CX TV, which is positioned as an ideal solution for working as part of gaming systems. The novelty received a 48-inch matrix on organic light-emitting diodes (OLED) with a resolution of 4K 3840 x 2160 pixels with support for high dynamic range HDR.

The novelty supports Nvidia G-Sync adaptive synchronization technology, which allows you to get rid of tearing and make the gameplay as smooth and dynamic as possible.

At the heart of the TV is a proprietary Alpha 9 Gen 3 processor that delivers the latest in gaming technology and picture enhancement features, including higher frame rates, Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM) and Enhanced Audio Return Channel (eARC).

The matrix response time is 1 ms. The LG OLED 48CX supports Dolby Vision IQ, Dolby Atmos, Apple AirPlay 2 and HomeKit, as well as Google Assistant and Alexa voice assistants.

Other interesting news:

▪ PWM controller DC-DC LM5033

▪ Soothing soda

▪ Solar panels for FlixBus

▪ Washing people with ultrasound

▪ Microplastics affect life in soil

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Funny puzzles. Article selection

▪ article Servant to the king, father to the soldiers. Popular expression

▪ article Which insects hunt with bioluminescence? Detailed answer

▪ article Soft and manual bicycle. Personal transport

▪ article Electronic alarm clock on K145IK1901. Encyclopedia of radio electronics and electrical engineering

▪ article Improved simple power supply. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Comments on the article:

Olga Borisovna
I turn to this site when organizing extracurricular work in physics, it contains the necessary information for those who wish to expand their horizons in natural science. [roll]

All languages of this page

Home page | Library | Articles | Website map | Site Reviews