Viscosity, Flow Rate and Separating Matter

What is a fluid?

• A substance that has a fixed and stable shape.

• A substance that has no fixed shape and yields easily to external pressure (compressible).

• A substance that forms a pile when poured because the particles do not continue to flow apart from each other.

• A substance that that is constantly moving because of the strong forces of attraction between them.

What is Viscosity?

• A fluid's colour.

• A fluid's temperature.

• A fluid's thickness or thinness

Which of these factors affects Viscosity?

• Temperature

• Colour

• Taste

• All of the above

Tags

NGSS.MS-PS1-4

What is flow rate?

• The amount of a fluid flowing between two points

• The amount of a fluid when comparing two containers

• The speed which a fluid flows from one point to another.

• The speed which liquids flow from one point to another

High viscosity is when particles are closer together and the cohesive force is stronger.

• True

• False

• I don't know

Liquids with very high viscosity has a _________ flow rate.

• fast

• not at all

• slow

• whenever it wants

If a liquid has high viscosity, it probably has:

• strong resistance to flow
• weak resistance to flow

As temperature increases viscosity _______________ because internal friction _______ for a liquid.

• increases; increase

• increases; stays the same

• decreases; decreases

• decreases; increases

Tags

NGSS.MS-PS1-4

As temperature of a gas ________, the viscosity ________.

• decreases, increases

• decreases, stays the same

• increases, increases

• increases, decreases

Tags

NGSS.MS-PS1-4

The best example of high viscosity would be? Assume the substance is at room temperature.

• Honey

• Soap

• Marbles

• Water