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.)

Fill in the Blank

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).

Fill in the Blank

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.

Fill in the Blank

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)

Fill in the Blank

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?

Fill in the Blank

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