Champagne corks are shaped like that due to the extreme pressure in a champagne bottle...the shape helps ensure that the cork will not fly out under the carbonation.
The larger or 1.5 liter bottle is called a Magnum
As the air inside the sealed bottle is heated, it will expand and increase in pressure. When the air is allowed to cool, it will contract and decrease in pressure. This change in pressure can potentially cause the bottle to deform or even explode if the pressure builds up too much.
A water bottle can implode if the pressure inside the bottle becomes significantly lower than the pressure outside the bottle, causing the bottle to collapse inwards. This can happen if the bottle is sealed at high altitude and then brought down to a lower altitude where the external pressure is much higher.
The cork over the bottle's neck is going too be pushed by how much air is in the bottle.
If the air pressure inside the bottle is suddenly reduced or "sucked out," the higher pressure outside the bottle will cause it to collapse or shrink due to the pressure difference. This can lead to the bottle crumpling in on itself.
When pressure is added to a bottle, it compresses the air inside, increasing its density. This makes the bottle heavier as the air exerts more force on the walls of the bottle due to increased pressure. The increased mass is due to the added weight of the compressed air inside.
As the liquid is heated, it will expand and create pressure inside the bottle. If the bottle is sealed tightly, the pressure will build up, potentially causing the bottle to explode due to the increased pressure. It is important to be cautious when heating sealed containers to avoid any potential hazards.
When you suck air out of a bottle, you decrease the air pressure inside the bottle. The higher air pressure outside the bottle then pushes the walls of the bottle inwards, causing it to shrink. This is due to the difference in air pressure inside and outside the bottle.
When an empty water bottle is placed in a freezer, the air inside the bottle cools down and contracts, creating a lower pressure in the bottle compared to the external pressure. This pressure difference causes the bottle to collapse as the external pressure compresses the bottle inward.
When you crush a plastic bottle, you decrease the volume inside the bottle. This increase in pressure (due to the decrease in volume) is what makes the bottle crush. The atmospheric pressure outside the bottle remains constant, causing the bottle to collapse under the increased pressure inside.
As altitude increases, the air pressure decreases. The air pressure inside the sealed bottle remains constant, creating a pressure difference between the inside and outside of the bottle. This pressure difference causes the higher pressure inside the bottle to push outwards, leading to the bottle collapsing due to the lack of external pressure to balance it.