StudyBrixFree worksheets, study guides and courses

Geography · Grades 8–12

Population density and spatial evidence

Compare areas fairly and inspect what averages hide.

Make a worksheet

Learn the idea

Density

Population density = population / area, using stated units.

Boundaries

Changing the study boundary can change an average density.

Patterns

An average can hide uneven settlement within a region.

Comparisons

Use compatible dates, definitions and units.

Worked examples

A fictional region has 12,000 people in 40 km². Find density.

12,000/40 = 300 people per km².

300 people/km²

Does a density of 300 people/km² mean exactly 300 people live in every square kilometer?

Density is an area average.

No.

Check your understanding

  1. A second fictional area has 9000 people and density 150 people/km². Find area.

  2. Why can two reports give different density figures for a named city?

  3. Which comparison is most consistent?

    1. One density and one total population with no area.
    2. Two unrelated map colors.
    3. Densities using the same area units and comparable dates.

Answers and marking notes

Answers and marking notes
  1. 60 km²

    Area = 9000/150 = 60 km².

  2. They may use different boundaries, dates or population definitions.

    Compare the measurement basis before concluding one is false.

  3. Densities using the same area units and comparable dates.

    Compatible quantities enable meaningful comparison.

Independent educational review required. Grade bands are approximate; these are not officially aligned curricula.