Why is it that when you pour a liquid from a glass, it sometimes pours but sometimes it runs down the side?
350047
The first two factors that came to mind when I read this question have already been mentioned (surface tension and viscosity).  However,  I would describe the effect a bit differently.\n\nSurface tension provides the major cause of a liquid dribbling down the side rather than pouring cleanly from a container.  Surface tension is created by a weak bond between the molecules in the liquid and causes the molecules to form a continuous mass of particles.  Imagine water being slowly poured from a near-full glass into a small-mouthed container.  As the glass is tilted, the water slowly rolls over the lip of the glass and tends to roll down the side of the glass.  This is because the surface tension of the water is acting to keep a continous body of water and the slight angle of the glass reduces the effective force of gravity pulling the water away from the surface of the glass.  The forces pulling the liquid away from the glass are not strong enough to overcome the surface tension of the water.  The water adheres to itself, and to the glass, and streams down the side.  \n\nAs the glass is tilted further, the speed of the water exiting the glass increases and effect of gravity is increased due to greater angle of the glass with respect to the ground.  The greater forces pulling the water from the glass cause the surface tension in the water to begin to fail, and some of the water pours away from the glass, while some of the water continues to run down the side.  \n\nWhen the glass is fully inverted, the water exits the glass at maximum speed and the full effect of gravity pulls the water away from the glass.  The surface tension of the water is overcome and the water exits cleanly from the glass.  \n\nThe only effect that viscosity has on this is that high viscosity liquids pour much more slowly and the momentum effect is greatly reduced.  Thus, a greater angle is often needed to increase the gravitational effect and overcome the surface tension.
409824
When what is mixed is not fully disolved into the liquid medium.  It usually settles.  A cenrifuge will not separate out the components that are not part of the solution.
518623
when u swirl the water, if the object floating on it is not moving at the same speed, it would have a lower outward force. They r then pull by gravity towards the lower point... the middle of the swirling water. whichever thing slows down first, it will "drop" to the middle.\n\nI notice too that even if the thing does not float, like sugar, they r concentrated at the middle in the bottom. I think that's due to gravity too. When u swirl, water goes to the side and when the roundabout motion slows, water slowly falls back down to the middle. there's a net flow toward the middle and hence dragging the sugar to the middle.
912005
It is the fluid like stress before it hardens.  It is important for use in designing form works so they don't blow out.  It is more than double that of water.
1178623
solid's particles are compact, while on liquids they are loose but gas' are the most loose (more distances with each other)
959091
Because the curvature of the glass will falsify your measurement (light diffraction, bending of a flexible measuring tape). You have to measure edge to edge on the concave side to avoid this.
473704
when you have liquid in a container, particularly water, will curl up on the sides as it tries to expand it's surface area. in a volumetric flask or a graduated cylinder the meniscus will look like a little contact lens or a curve dipping down and when you are measuring things, the very bottom of the meniscus should be located at where you want the amount, (ie: 3 mLs.)
133407
It's because of evaporation.  Whenever something evaporates, it takes energy away from what it's touching, and the temperature goes down.
591941
Because of the coriolis effect. However, this is 100% not true. The water could either flow clockwise, counterclockwise or straight down depending on the shape and curvature of the sink/toilet
29645
It probably is evaporating from the top. The bubbles on bottom are just more visible.
528357
because of the gravitational pull on the water, it comes down, not straight
155067
The liquid molecules begin to heat up which causes them to increase their moleculer movement. They eventually move very far apart which causes them to be in the "gas" state.
596740
Like everyone else said, it makes the drink cooler. However, this is because heat is transferred in an attempt to achieve equilibrium. In this case, the equilibrium would be between the temperature of the ice and that of the drink. Because the average temperature of the drink is higher than that of the ice, heat flows out of the drink and into the ice, slowly levelling the temperature.
399680
As the temperature of a liquid increases the particles have more kinetic energy and can move more freely so an object passing through the liquid will experience less friction.
1175149
A solid, unlike a liquid or a gas, does not take the shape of its container.\nPour some water into a glass and the water takes on the shape of the glass, pour this water onto the floor and now the water has an entirely different shape.  The same goes for gasses.  However, put some solid object in a glass, on the floor, ..., and it still has the same shape.\n\nBoth solids and liquids have definite volumes, unlike gasses.  Solids and liquids are considered "incompressible".  No matter how much you squeeze them, they retain their volume.  Gasses however can be compressed/expanded depending on the force acting on them.
486174
You are assuming that the water does flow in different directions when it actually doesn't.
860910
Pour the liquid in the graduated cylinder and there will usually be mL markings along the side.  This measurement is volume