Assuming the can can be sealed. When the can is heated the air inside it expands. If the can is then sealed and allowed to cool the air inside contracts which causes the pressure inside to drop. Because the outside air pressure is now greater it crushes the can.
Circle the ones that are bolded.The process begins by water in the fish's surrounding entering its mouth's. Water enters the mouth by a very effective pumping system that involves the mouth and the outer flexible bony flap that cover the gills called the operculum. This is achieved by the opening and closing of the fish's mouth as it pumps water through the gills. When the fish's mouth is open, the operculum closes and water is drawn into the fish's mouth. Conversely, when the fish closes its mouth, the operculum opens and fresh water is then allowed to flow across the gills.By: Matthew Christensen
Egg Vacuum For an experiment I decided to do 'Egg Vacuum'. It is a force of air that pushes the egg inside of the bottle; this is the method we used: # Find a bottle with a long, narrow neck and set it on the table. The opening should be just small enough to keep the egg from falling inside. # Boil and peel and egg. # Drop 3 lit matches into the bottle. # Quickly place the egg over the mouth of the bottle. What happens you may ask? The lit matches heat the air inside the bottle. When air is heated it expands and takes up more room. As the heated air expands, some of it escapes out the bottle. When the matches go out, the air inside the bottle cools and contracts (and takes up less room), thus creating a lower pressure inside the bottle than outside. The greater pressure outside the bottle forces the egg into the bottle. Now I'm going to tell you about Expansion, Expansion is an increase in the size of a body without the addition of material to the body. Most solids and liquids expand when they are heated and contract when they are cooled. Gases also expand when they are heated at a constant pressure. If a gas is heated in a container that prevents expansion, the pressure of the gas increases. If I wanted to get the egg out, I would simply turn the bottle upside down and blow into it. The increased air pressure in the bottle will cause the egg to pop back out. Below are some useful Related Links:
soap in potty mouth
The nose and mouth meets at its individual cavities, in this case its the nasal cavities and the oral cavities meeting at the pharynx.
Air enters the the respiratory tract through either the nose or mouth.
by opening and closing
the epic coolness of ur mouth
you try to swallow air without closing your mouth... try it... but it won't work if you shut your mouth
Wash ya asses americans
it's better eaten when is warm but cooled so it does not burn skin or the inside part of your mouth.
by closing its mouth
;) eyes/semicolon; mouth/closing parentheses)
The teeth in mouth in the digestive system are where food is crushed physically.
Alligators bite by opening their mouth and then closing it so fast that it will 80% kill you.
it has its own way of closing its "mouth" when it feels somthing like a fly
depends on the fish but the majority of bony fish pump water over their gills by opening and closing their mouth when at rest
Opening and closing the left hand makes hime blink and opening and closing the right hand makes his mouth move.