MASS, DENSITY, VOLUME, & BUOYANCY!

WHAT THE HECK ARE THEY?

MASS (COPY ONTO PAPER)

Mass is how heavy something is without gravity (COPY)

Another way of describing mass is:Mass is how much matter an

object hasMass is measured in grams (g) or

kilograms (kg)

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Examples of MASS

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DENSITY (COPY ONTO PAPER)

Sometimes density is easy to sense. If two objects have exactly the same size and shape, the denser one may feel heavier. But if their densities are very close together, it will be hard to tell a difference.

The only way to decide the density of a substance is to measure its mass and its volume, then divide.

Units for density g/cm3

DENSITY

DEFINITION: (COPY) The density of a material is defined as its mass per unit volume.

FORMULA (COPY)Density = Mass ÷ Volume

EXAMPLES OF DENSITY

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VOLUMEThe amount of 3-dimensional space an

object occupies (COPY)

For this example the volume is 4×5×10 = 200 units3

Units of volume include:cubic centimeters (cm3), cubic meters

(m3), liters (COPY)

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EXAMPLES OF VOLUME

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BUOYANCY

Upward force exerted on an object immersed in a fluid.

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EXAMPLES OF BUOYANCY

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ISAT COACH BOOK

Read and discuss lesson 57Assignment: Draw or find pictures

to demonstrate mass, density, volume, and buoyancy.