Density: Area & Volume

Density: Area & Volume

Lesson, Notes, & Practice

Open Ended

Define "density" in your own words

Density Definition

the degree of compactness of a substance

Multiple Choice

Which square is more dense?

• Left

• Right

Multiple Choice

Think about the number of people in the space in this classroom. Which class is LESS dense: 4th period (17 students) or 2nd period (10 students)?

• 2nd period

• 4th period

Population Density

We can calculate the population density of a given area by dividing the number of people living there by the "area" of the place (total number of square miles, km, meters, etc.)

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In 2018, Augusta had a population of 196,807. Augusta has a land area (not including water areas) of 306.2 square miles. What was the population density in 2018?

people per square mile (round to the nearest whole person).

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A circular petri dish has a radius of 3 cm. Sierra counts 95 bacteria in the petri dish when she examines it under a microscope. What is the density of the bacteria per square centimeter? (round to the tenths place, type in number only)

Volume & Density

You can find the density of a 3 dimensional object by dividing its mass by its volume.

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What is the density of a block of wood measuring 0.9 cm X 2 cm X 6 cm with a mass of 5.4g? (Round to the tenths place, type in numbers only)

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Water has a density of approximately 1 g/cm³. Objects will sink if their density is greater that water and will float if their density is less. A cube measuring 2cm on each side weights 5g; will it sink or float?

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A spherical balloon with a 10" diameter is filled with 0.3 grams of helium. What is the density of helium in the balloon? Round to the hundred thousandths, type number only