Population Density and Area Calculations

This lesson covers the concept of population density, abbreviated as PD, defined as the number of people over land area. The video includes three problem-solving scenarios: a school deciding if a new building is needed based on student density, an island assessing its capacity to support population growth, and a skating rink evaluating safety based on density. Each scenario involves calculating population density and making decisions based on the results.

What does PD stand for in the context of this lesson?

• Population Density

• Population Distribution

• Population Development

• Population Division

How is population density calculated?

• Number of people divided by land area

• Land area divided by number of people

• Number of people multiplied by land area

• Number of people plus land area

What was the initial population of the school when it first opened?

• 4800 students

• 221 students

• 397 students

• 176 students

What is the population density threshold for building a new school?

• 0.5

• 0.046

• 0.083

• 0.1

What is the new population of the island after accounting for births and deaths?

• 67,000

• 68,000

• 69,425

• 70,000

Can the island support the new population density?

• Yes, because the density is exactly 135

• Yes, because the density is less than 135

• No, because the density is less than 135

• No, because the density is greater than 135

What is the formula for calculating the area of a circle?

• Pi times diameter squared

• Pi times radius squared

• Diameter times radius

• Pi times diameter

What was the population density at 6 PM on the skating rink?

• 0.096

• 0.013

• 0.1

• 0.0096

At what time was it more dangerous to be on the skating rink?

• 6 PM

• 8 PM

• 4 PM

• 2 PM

Why was it more dangerous to be on the rink at 6 PM?

• Because the rink was smaller

• Because the population density was lower

• Because there were fewer people

• Because the population density was higher