IB ESS · Topic 8 · HL

Topic 8: Human Populations (HL)

9 review questions with answers for Topic 8: Human Populations (HL). Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.

A question from this set

Number of people aged under 15 and over 64 relative to the number aged 15–64, usually expressed per 100?

  • Dependency ratioRight answer
  • Temperature inversion
  • Secondary pollutants
  • Tropospheric ozone
From Topic 8: Human Populations (HL), 9 questions.

All 9 questions and answers

  1. Number of people aged under 15 and over 64 relative to the number aged 15–64, usually expressed per 100?

    Answer: Dependency ratio

  2. Continued population growth even after fertility rate falls, due to a large proportion of young people?

    Answer: Population momentum

  3. Movement of people driven by environmental degradation, climate change or natural disasters?

    Answer: Environmental migration

  4. Approach to designing cities as ecosystems, integrating green spaces, urban farming and biophilic design?

    Answer: Ecological urban planning

  5. Building design that minimizes harm to human health and the environment through sustainable materials and energy-efficient practices?

    Answer: Green architecture

  6. Pollutants that are not emitted directly but form when primary pollutants react with each other or with other substances in the atmosphere?

    Answer: Secondary pollutants

  7. Atmospheric condition where a warm air layer traps cool polluted air near the surface, worsening pollution?

    Answer: Temperature inversion

  8. Yellow-brown haze formed when sunlight reacts with NOx and VOCs; contains tropospheric ozone and PANs?

    Answer: Photochemical smog

  9. Ground-level O₃ that damages crop leaves and irritates the eyes and airways?

    Answer: Tropospheric ozone

Play it as a class game

Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options are other answers from the same set.

The questions come from the Biology by Bradford flashcard bank. IB and AP are trademarks of their owners. splycr is not affiliated with or endorsed by the International Baccalaureate or the College Board.