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Families and Households

Fertility, birth rates and family size

  • 3 things to know
  • AS Unit 1

Overview

Birth rate, total fertility rate and replacement level of fertility.

What you need to know

Answer each one before you reveal it.

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Key term

Define the birth rate.

Key term

Define the total fertility rate.

Key term

Give three reasons the birth rate has fallen since 1900.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Define the birth rate.

    Model answer

    The birth rate is the number of live births per thousand of the population in a year.

  2. 2

    Define the total fertility rate.

    Model answer

    The total fertility rate is the average number of children a woman would have during her childbearing years at current birth rates.

  3. 3

    What is the replacement level of fertility?

    Model answer

    It is about 2.1 children per woman, the level at which a population replaces itself without migration.

  4. 4

    Is fertility in England and Wales above or below replacement level, and what follows from that?

    Model answer

    It is below replacement level, so without migration the population would eventually begin to fall.

  5. 5

    Give three reasons the birth rate has fallen since 1900.

    Model answer

    Contraception became reliable and widely available, children became an economic cost rather than a source of income, and falling infant mortality meant fewer births were needed for children to survive.

  6. 6

    How has the fall in infant mortality affected family size?

    Model answer

    When almost all babies survive, parents no longer need many births to end up with the family size they want.

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