Science 4 · Unit 4: Earth and its habitats · Cambridge Primary Science Stage 4

Questions

1. 1. An earthquake happens when there is a sudden ... of rocks in the Earth's crust.

   • colour change
   • cooling
   • movement
   • melting
   Check

2. 2. A sudden movement of rocks in the crust creates huge amounts of ...

   • magma
   • energy
   • ash
   • water
   Check

3. 3. The energy from an earthquake travels as ...

   • wind
   • light
   • waves
   • lava
   Check

4. 4. Which is a type of damage caused by earthquakes?

   • Lava flows over the town.
   • Trees grow faster.
   • Buildings and bridges fall down.
   • The weather becomes very cold.
   Check

5. 5. Which of these can also be caused by an earthquake?

   • rainbows
   • droughts
   • snowfall
   • landslides
   Check

6. 6. Which part of the world has the most earthquakes?

   • the North Pole
   • the middle of Australia
   • the middle of Africa
   • around the edges of the Pacific Ocean
   Check

7. 7. What is a huge sea wave caused by an earthquake called?

   • a tsunami
   • a hurricane
   • a tide
   • a volcano
   Check

8. 8. What causes a tsunami?

   • an earthquake under the sea
   • a very strong wind
   • the Moon pulling the sea
   • heavy rain
   Check

9. 9. A tsunami is heading towards a village by the sea. What will happen to the village?

   • It will be flooded, and buildings may be destroyed.
   • Nothing, because the wave will stop at the beach.
   • The village will get a gentle shower.
   • The village will catch fire.
   Check

10. 10. How do cities in Japan and California try to stop buildings falling down in earthquakes?

    • New buildings must have deeper, stronger foundations.
    • All buildings must be very tall.
    • Buildings must be painted bright colours.
    • People must not build houses at all.
    Check

11. 11. What are a building's foundations?

    • the windows of the building
    • the concrete base the building is built on
    • the roof of the building
    • the people who live there
    Check

12. 12. How do deeper, stronger foundations help in an earthquake?

    • They absorb ground movements and reduce the shaking.
    • They stop the earthquake from happening.
    • They warn people before the earthquake.
    • They make the building float.
    Check

13. 13. Why do scientists think animals behave strangely before an earthquake?

    • They are cold.
    • They can sense vibrations before the earthquake.
    • They are hungry.
    • They can see the waves in the sky.
    Check

14. 14. How might people in parts of China know an earthquake is coming?

    • Animals behave strangely, like snakes waking from their winter sleep.
    • The weather gets very warm.
    • Volcanoes start to erupt.
    • The sea turns a different colour.
    Check

15. 15. What have people in high-risk areas of China been asked to do?

    • Keep their animals indoors.
    • Move to a different country.
    • Tell the authorities if animals are behaving strangely.
    • Build their houses on hills.
    Check