Question

demonstrate atmospheric pressure using crushing can experiment with 15 sequences of atmospheric pressure with explanation.

Please answer fast​

Answer 1

Answer:

Pressure means everything when it comes to forecasting weather and learning about global patterns. High pressure gives us sunny weather and low pressure gives us stormy weather. This lesson will be broken into two parts over the next two weeks. This week will focus on the relationship between temperature and pressure. Next week we will learn about how pressure controls our weather patterns.  

First, let’s start off by defining air pressure. It is the weight (force) of the Earth’s atmosphere pressing down on any object on the Earth’s surface. There are many units to describe air pressure. The two most common metric units meteorologist use are “Inches of Mercury (Hg)” or “millibars (mb).” You may hear meteorologist refer to these units when describing the strength of a hurricane. There is a cool tool used to measure air pressure and it is called a barometer.

Answer 2

The Can that Can Be Crushed with Some Air

Ingredients required:

• an empty can
• a pair of tongs
• a big bowl
• a burner/stove

Be careful: this experiment requires work with fire.

Step 1 : Take the big bowl and fill it with cold water.

Step 2 : Put a tablespoon or two of water in the empty can.

Step 3 : Hold the can with the tongs above the lit burner. Heat it till you see the water inside it evaporating.

Step 4 : Quickly pick the can with the tongs and drop it face down into the big bowl.

• What do you observe?

The can gets crushed as if there is hand squeezing it. This invisible hand is actually the atmospheric pressure.

• Why this happens

Upon heating the can, you may have noticed water vapour, the gaseous form of water, coming out of the can. As this water vapour fills the can, it exerts great pressure on the walls of the can. This leads to an increase in the pressure inside the can.

When you drop the can upside down into the bowl, the cold water cools and condenses the water vapour, turning it back to its liquid state.

Alas, water in its liquid state exerts less pressure on the walls than water in its gaseous state. As a result, there is less pressure inside the can and more air pressure outside. Since both of them are not in equilibrium, the greater force: the air pressure outside takes its toll. That being so, the can is crushed by the atmospheric pressure.

• Conclusion

This activity proves the presence of the great pressure the atmosphere exerts. If the atmospheric pressure can crush a can, why not you? We are still able to withstand it because of the pressure inside us that maintains a balance.

The important terms:

→ Force is a push or pull caused by interaction of two objects.

→ Pressure is force per unit area.

→ Atmospheric pressure is the pressure exerted by the blanket of air surrounding us.