One of the causes of liquid pressure is the action of gravity, so why not say that it is pressure

Analysis: Second figure.

1. The direction of gravity is always vertical downward, and the gravity of the water on both sides of the cup acts on the horizontal support surface through the cup wall;

2. The direction of pressure is perpendicular to the support surface, not necessarily vertically downward, and the force between objects is mutual, although the water on both sides of the cup has pressure on the middle, and the water in the middle also has pressure on the water on both sides, they balance each other, so the pressure of the water in the cup on the bottom of the cup is equal to the gravity of the water in the middle;

3. Therefore, the pressure of the liquid on the bottom of the cup at this time is less than the gravitational force of the liquid.

Question addendum: The container wall will support a part of the liquid gravity, and the pressure is perpendicular to the force surface, so doesn't the container wall also support a part of the liquid pressure?

Addendum: This shows that you do not understand the characteristics of liquids, because the liquid has fluidity, so at the same depth the liquid has the same pressure in all directions, and the force between the objects is mutual, although the water on both sides of the cup has pressure on the middle, and at the same time the water in the middle also has pressure on the water on both sides, and they balance each other, so the pressure of the water in the cup on the bottom of the cup is equal to the gravity of the water in the middle; At this time, the pressure of the liquid on the bottom of the cup is less than the gravitational force of the liquid [Note: f in the second diagram is the pressure of the liquid on the bottom of the cup, not including the pressure on the wall of the cup].

The pressure produced by gravity is discussed here and is related to depth and density. This is the endogenous pressure of the liquid.

Of course, it is also possible to generate pressure when a closed liquid is subjected to external pressure, but this is imposed.

Liquids are pressured by gravity and fluidity, and liquids are one of the three major forms of matter. It does not determine the shape of Qiaoling and is often influenced by the container. However, its volume is fixed under constant pressure and temperature.

The distance between the molecules of the liquid is farther, the molecular motion is more intense, and the attraction between the molecules is less. Increasing or depressurizing generally vaporizes the liquid into a gas.

The pressure formed by the gravity of the liquid itself in the bottom, inner wall, and interior of the liquid container is called liquid pressure, referred to as hydraulic. Pascal's "barrel cracking" experiment is a good example of how liquid pressure is related to the depth of the liquid, because the pressure of the liquid is equal to the product of density, depth, and gravitational constant. In this experiment, the density of the water remains the same, but the depth increases repeatedly, and the pressure in the lower part increases, until its hydraulic pressure finally exceeds the upper limit of what the barrel can bear, and the barrel is rounded and widened.

Hello lz. Your question is difficult.

The direct cause of the pressure inside the liquid is caused by the movement of molecules! It is generated by the force generated by the liquid splitting the Biling base to strike the object on the unit area.

However, the root cause is gravity (or gravitational force, because it can be generalized to non-terrestrial situations), because gravity exists, which makes molecules deeper more concentrated, move faster, and hit the container with more force.

So there is no answer to the question of lz, molecular motion is the direct cause, and gravity is the root cause, and if you really want to say, both are true.

The root cause is gravity, which is equivalent to the force we use when we compress the sealing piston, and because of this force, the movement of the penitent molecules reaches a very high speed, creating pressure. That's what I thought.

Produced by the impact of atmospheric molecules.

But the gravity of the atmosphere ensures that the atmosphere does not escape. And it is distributed in a thinner and higher on the earth's surface.

Gravity. Liquids are subject to gravity.

Gravity. Liquid fluidity.

Movement of gas molecules.

The pressure of a liquid is due to the force of gravity exerted by the liquid on the object that comes into contact with it.

Liquids and solids are similar in that they both have gravity, so they will be pressed against the bottom of the container, and there is pressure on the bottom of the container;

Liquids are different from solids in that they are fluid, and because they have to flow, they also have pressure on the walls of the container

So the answer is: gravity; Liquidity

Gravitational attraction is between any two objects, and gravity is the force of attraction between the earth and the object.

The cause of liquid pressure, the liquid is affected by gravity in the bottom, inner wall and interior of the liquid container, and the pressure generated by the liquid is called liquid pressure, referred to as hydraulic.

1.Due to the fluidity of the liquid, the pressure generated by it has the following characteristics:

1) In addition to the pressure on the bottom of the container, the liquid also exerts pressure on the side walls that "restrict" its flow. Solids, on the other hand, only exert pressure on their bearing surfaces, always in a direction perpendicular to the bearing surfaces.

2) There is pressure inside the liquid in all directions, and the pressure is equal in all directions at the same depth. For the same liquid, the deeper the depth, the greater the pressure.

3) The formula for calculating the pressure of a liquid is p= gh. It can be seen that the pressure of the liquid only depends on the type of liquid (i.e. density) and depth h, and has no direct relationship with the mass and volume of the liquid.

4) The liquid in the closed container can transfer the pressure it is subjected to in all directions according to its original size. Relationship with gravity.

Causes and characteristics of liquid pressure.

1) The liquid has pressure in all directions. (2) The pressure of the liquid at the same depth in the same liquid in all directions is equal.

3) In the same liquid, the deeper the depth, the greater the liquid pressure. (4) When the depth is the same, the greater the density of the liquid, the greater the pressure of the liquid.

The reason for the liquid pressure is the gravity of the liquid and the fluidity of the liquid; The characteristics of liquid pressure are: there is pressure inside the liquid in all directions, and the size of the liquid pressure is related to the density and depth of the liquid.

The causes of liquid pressure: the liquid is fluid, and the liquid is subject to gravity.

Liquid pressure is characteristic: there is pressure inside the liquid;

The pressure inside the liquid at the same position is equal in all directions;

The liquid pressure increases with depth.

With the same depth, the greater the density of the liquid, the greater the pressure.

1. The liquid pressure is generated by the fluidity of the liquid, even if there is no gravity, there will still be pressure, but without gravity, the downward pressure of the liquid will be small. Because the downward pressure of a liquid is greater than that of the sidewall, if there is no gravity, the downward pressure is as great as the sidewall. So the reason for this is because of the fluidity of the liquid.

2. Characteristics of the internal pressure of the liquid:

1. At the same depth of the same liquid, the pressure of the liquid in all directions is small.

2. The internal pressure of the same liquid is strong and increases with the increase of water depth.

3. At the same depth of different liquids, the greater the density of the liquid, the greater the pressure.