FAQ: What Is A Meniscus Science?

What is meniscus in science definition?

A meniscus is a curve in the surface of a molecular substance (water, of course) when it touches another material. With water, you can think of it as when water sticks to the inside of a glass. • Water Science School HOME • Water Properties topics •

What is a meniscus in science and why is it important?

A meniscus occurs because of surface tension in the liquid and must be read at eye level. For a concave meniscus, the correct volume will be read at the bottom of the curve. Reading a meniscus properly is important for lab safety, since mixing incorrect amounts of materials can be dangerous.

What causes meniscus science?

The meniscus (plural: menisci, from the Greek for “crescent”) is the curve in the upper surface of a liquid close to the surface of the container or another object, caused by surface tension. Water-based fluids like sap, honey, and milk also have a concave meniscus in glass or other wettable containers.

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How do you do a meniscus science?

If the meniscus is a concave meniscus, read at the lowest level of the curve. If the meniscus is convex, take your measurement at the highest point of the curve. The short answer: Take your measurement from the center of the meniscus.

What is an example of meniscus?

The definition of a meniscus is the fibrous cartilage in a knee joint, or the curved upper surface of liquid that touches the sides of a jar, or a lens that is convex on one side and concave on the other. When oil is in a jar and the oil has a curve on the top of its surface, this is an example of meniscus.

What is meniscus and its types?

The meniscus (plural: menisci, from the Greek for “crescent”) is the curve in the upper surface of a liquid close to the surface of the container or another object, caused by surface tension. It can be either concave or convex, depending on the liquid and the surface.

Why is a meniscus important?

The meniscus plays two important roles within the knee. A meniscus is a critical shock absorber within the knee. The meniscus also provides stability within the knee.

What is a torn meniscus in the knee?

The meniscus is a C-shaped piece of tough, rubbery cartilage that acts as a shock absorber between your shinbone and thighbone. It can be torn if you suddenly twist your knee while bearing weight on it. A torn meniscus is one of the most common knee injuries.

What happens if you read the meniscus wrong?

The distribution of liquid at the top of the meniscus is thin, and contains air from the atmosphere that fills the hollow of the parabola. A calculation of the density of a liquid including this portion would be inaccurate because it includes a portion of gas, which is less dense than liquid.

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Does a meniscus tear cause fluid on the knee?

Secondary effects. A torn meniscus often causes the knee to make extra joint fluid. There is more room in the knee for fluid when the knee is slightly bent. Therefore, people with chronic swelling tend to hold the involved knee in a bent position and develop hamstring tightness and joint contracture.

Do all liquids have a meniscus?

A convex meniscus appears when molecules of liquid are strongly attracted to each other rather than to the wall of container. Most liquids, including water, show a concave meniscus but a great example of a convex meniscus is liquid mercury in a glass container.

Why do we need to read the lower meniscus and not the upper meniscus?

Why do we need to read the lower meniscus and not the upper meniscus? The lower meniscus must be read while measuring the volume of colourless or transparent liquids but the upper meniscus while using colured ones because the phase boundary in the colourless liquid is clearly visible so it is easy to read it.

Why does a meniscus occur at the surface of a liquid?

Formation of a Meniscus When liquid water is confined in a tube, its surface (meniscus) has a concave shape because water wets the surface and creeps up the side. Mercury does not wet glass – the cohesive forces within the drops are stronger than the adhesive forces between the drops and glass.

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