Lesson Y8-U05-L02

The Climate Has Always Changed: Natural Causes Quiz: KS3 Geography, Unit 11

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson Y8-U05-L02, The Climate Has Always Changed: Natural Causes: 20 multiple choice questions for the KS3 Geography (National Curriculum), Unit 11: Year 8: Climate Change: Evidence and Choices, written with Revision Ninja.

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The 20 questions

  1. What term describes natural evidence used to reconstruct past climates before thermometers?

    • Primary data
    • Digital data
    • Proxy data
    • Live data

  2. What do wide tree rings typically indicate about that specific year of growth?

    • Dark and windy
    • Cold and dry
    • Warm and wet
    • Frozen and barren

  3. What is trapped inside the compressed annual snow layers of an ice core?

    • Liquid ocean water
    • Ancient volcanic rock
    • Bubbles of old air
    • Fossilised dinosaur bones

  4. How do scientists work out the age of layers in an ice core?

    • Scanning rock density
    • Testing water purity
    • Counting annual layers
    • Measuring ice weight

  5. What term describes a very cold ice age when ice sheets grow larger?

    • Seismic shift
    • Interglacial period
    • Thermal maximum
    • Glacial period

  6. What is a warmer time between ice ages called?

    • Volcanic winter
    • Interglacial period
    • Solar minimum
    • Glacial period

  7. Roughly how long have thermometer records existed across the world?

    • About 150 years
    • About 150,000 years
    • About 1,500 years
    • About 15,000 years

  8. What can a very large volcanic eruption do to the climate for a few years?

    • Warm the oceans
    • Cool the Earth
    • Stop rainfall entirely
    • Expand ice sheets

  9. Which of these is a natural cause of long-term climate change?

    • Deforestation rates
    • Industrial emissions
    • Burning fossil fuels
    • Earth's orbit shifts

  10. About how many years does one long cycle of change in the shape of Earth's orbit take?

    • About 1,000 years
    • About 100,000 years
    • About 10 years
    • About 1 million years

  11. What is the name for a long cold period when huge ice sheets covered large parts of the northern continents?

    • A monsoon
    • An ice age
    • A drought
    • A heatwave

  12. Which natural factor alters how much sunlight reaches Earth over long periods?

    • Magnetic field strength
    • Orbit and tilt
    • Ocean salt levels
    • Plate tectonics speed

  13. How does a large volcanic eruption temporarily cool the Earth?

    • Lava chills oceans
    • Gas thickens ice
    • Ash blocks sunlight
    • Magma absorbs heat

  14. Mount Pinatubo erupted in 1991. By about how much did it cool global temperatures for about a year?

    • About 0.005 Celsius
    • About 5 Celsius
    • About 50 Celsius
    • About 0.5 Celsius

  15. What does it suggest when tree rings and ice cores both show a cold period?

    • Data corruption
    • Higher reliability
    • Measurement error
    • Random coincidence

  16. Which evidence can show past levels of atmospheric carbon dioxide?

    • Sediment colour
    • Tree ring width
    • Rock crystal size
    • Ice core bubbles

  17. What naturally drove swings between glacial and interglacial periods before human industry?

    • Solar flares
    • Orbital changes
    • Meteorite impacts
    • Continental drift

  18. What does a lower carbon dioxide level in an ice-core bubble indicate?

    • Colder past climate
    • Higher air pressure
    • Recent volcanic ash
    • Warmer past climate

  19. What usually happens to ice sheets when global temperatures rise?

    • They expand
    • They melt
    • They fracture
    • They thicken

  20. What makes proxy evidence for past climate most reliable?

    • Ignoring outliers
    • Using a single source
    • Several proxies agreeing
    • Testing modern samples

All KS3 Geography quizzes