Starter quiz
The planet that all humans live on is called ______.- 'Earth' ✓
- What is life expectancy?
- the measure of how long a person may live ✓
- the measure of how many humans there are on Earth
- the measure of a person’s height over time
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- When something increases, what does this mean?
- it shrinks or gets smaller
- it grows or gets bigger ✓
- it stays the same
- it gets folded up
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Scientists can use line graphs to make predictions about what may happen in future. What is a prediction?- the findings from research
- a question about what might happen
- an estimate or guess about a number
- a statement about what might happen ✓
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- Life expectancy is now ______ than it was in the past because of a lot of factors, such as better diets and more access to healthcare.
- higher ✓
- lower
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- Which type of diagram is best for showing how something changes over time?
- a bar chart
- a Venn diagram
- a line graph ✓
- a table
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Exit quiz
Gases which contribute towards climate changes are called ______ gases.- 'greenhouse' ✓
- Which of these is the main factor contributing to population growth?
- more babies being born
- people living longer ✓
- more houses being built
- more food being produced
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- What is population growth?
- the increase in average human height over time
- the increase in average human mass over time
- the increase in the number of humans on Earth over time ✓
- the increase in life expectancy of humans over time
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- Which of these things would not increase as the global population grows?
- spaces for wildlife habitats ✓
- electricity use
- waste production
- demand for food
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- Which of these things would lead to more greenhouse gases being produced?
- increased electricity use ✓
- increased use of cars ✓
- increased recycling
- increased number of babies being born
- increased conservation
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- Alex has created a line graph showing changes in population from 1900 – 2023. Which of these can he do using his line graph?
- make predictions about the population size of the future ✓
- see how big the global population was in 1700
- observe how population has changed over time ✓
- understand the reasons for population growth
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Worksheet
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Presentation
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Lesson Details
Key learning points
- Population growth is the increase in the number of humans on Earth over time.
- The growing population has been driven largely by the increase in human life expectancy.
- Plotting data into a line graph can help to make predictions of population growth for the future.
- Population growth can lead to increased demand for food, loss of habitats and more production of greenhouse gases.
Common misconception
Pupils may think that population size is only affected by the number of people being born.
Use the lesson resources to explain that many factors have an impact on population size, with the main contributing factor currently being the increase in life expectancy.
Keywords
Population - The population of a place is all of the people living there.
Life expectancy - Life expectancy is the measure of how long a person may live.
Impact - The impact of something is the effect it has.
Prediction - A prediction is a statement saying what you think will happen.
Greenhouse gases - Gases which contribute towards global warming are called greenhouse gases.
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