Science 7 · Unit 6: Earth physics · Cambridge Lower Secondary Science Stage 7

Questions

1. 1. What is the line where two tectonic plates meet called?

   • a plate boundary
   • a plate edge
   • the middle of the plate
   • the end of the plate
   Check

2. 2. What name is given to a violent movement between two tectonic plates?

   • a storm
   • an earthquake
   • a flood
   • a volcano
   Check

3. 3. Where are earthquakes most likely to happen?

   • near plate boundaries
   • only near the North Pole
   • only in the oceans
   • in the middle of plates
   Check

4. 4. The plate boundaries around the edge of the Pacific Ocean have many volcanic eruptions and earthquakes. What is this area often called?

   • the Ocean Ring
   • the Pacific Plate Edge
   • the Pacific Ring of Fire
   • the Volcano Belt of Asia
   Check

5. 5. Where on the South American plate is a volcano most likely to form under water?

   • in the middle of the plate under the ocean
   • in the middle of the land
   • on a plate boundary under the ocean
   • far from any plate boundary
   Check

6. 6. Where could fold mountains be forming on land in South America?

   • on the east coast, far from boundaries
   • in the Atlantic Ocean
   • along the west coast, where two plates push together
   • in the middle of Brazil, far from boundaries
   Check

7. 7. How are fold mountains formed?

   • Two plates push together and the rock crumples upwards.
   • Two plates move apart and magma fills the gap.
   • Rivers pile up sand.
   • Volcanoes erupt in the middle of plates.
   Check

8. 8. Which of these mountains are fold mountains, formed when tectonic plates pushed against each other?

   • a hill of rubbish
   • the Himalayas
   • a volcano in the middle of a plate
   • a sand dune in a desert
   Check

9. 9. What is the name for liquid rock when it is underground?

   • crust
   • lava
   • magma
   • ash
   Check

10. 10. A volcano has not erupted for a very long time, but it may erupt again. What is it called?

    • dormant
    • active
    • molten
    • extinct
    Check

11. 11. Which word is used to describe the strength of an earthquake?

    • destruction
    • force
    • magnitude
    • energy
    Check

12. 12. Each step up in earthquake magnitude is 10 times stronger. How many times stronger is magnitude 6 than magnitude 5?

    • 1
    • 10
    • 100
    • 2
    Check

13. 13. How many times stronger is magnitude 7 than magnitude 4?

    • 1000
    • 30
    • 3
    • 100
    Check

14. 14. Where are earthquakes under the oceans most likely to happen?

    • wherever there are big waves
    • near islands with no plate boundaries
    • in the deepest part of every ocean
    • along plate boundaries under the sea
    Check

15. 15. Earthquakes under the ocean can damage land hundreds of kilometres away. How?

    • They can cause huge waves called tsunamis.
    • The shaking travels through the air.
    • They make the sea freeze.
    • They cause storms in the sky.
    Check