Table of Contents
What is demonstrated by water moving up a straw?
What is demonstrated by water moving up a straw? The water will remain the same.
What forces the liquid upwards when we use a straw?
Answer Expert Verified when we drink through a straw then the atmospheric pressure forces the liquid upwards. when we suck through the straw, the pressure decreases in that area and the liquid moves towards that.
Which best explains the surface tension of the water?
Surface tension in water owes to the fact that water molecules attract one another, as each molecule forms a bond with the ones in its vicinity. Due to the surface tension, small objects will “float” on the surface of a fluid, as long as the object cannot break through and separate the top layer of water molecules.
What property explains why liquid go up the drinking straw?
Sipping a drink through a straw might seem simple. But you are actually using some fancy air pressure changes to move your beverage. The sipping action occurs when you lower the air pressure in your mouth, which allows the atmospheric pressure to push the liquid up the straw.
Which statement best explains why water runoff is important?
Runoff: Surface and Overland Water Runoff A portion of the precipitation seeps into the ground to replenish Earth’s groundwater. Most of it flows downhill as runoff. Runoff is extremely important in that not only does it keep rivers and lakes full of water, but it also changes the landscape by the action of erosion.
What keeps water in a straw?
The air outside the straw, pushing down on the water in the glass, weighs enough to hold the water up inside the straw. The water will stay there as long as no air can get into the top of the straw, where its weight can push the water back down to the level in the glass.
When you place a straw into a glass of water the water seems to climb up the straw before you even place your mouth on the straw?
A straw works because when you suck the air out of the straw, it creates a vacuum. This causes a decrease in air pressure on the inside of the straw. Since the atmospheric pressure is greater on the outside of the straw, liquid is forced into and up the straw and into your mouth (Figure 11.1. 1).
Which statement best explains why water is an important molecule for living things?
Water’s extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable life-sustaining force. On a biological level, water’s role as a solvent helps cells transport and use substances like oxygen or nutrients.
What best describes how a straw functions?
A straw works because when you suck the air out of the straw, it creates a vacuum. This causes a decrease in air pressure on the inside of the straw. Since the atmospheric pressure is greater on the outside of the straw, liquid is forced into and up the straw and into your mouth (Figure 11.1.