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6. What is the lithosphere comprised of?

  • Tectonic plates
  • All of the above
  • Crust
  • Mantle

7. How are igneous rocks formed?

  • Metamorphic rocks are corroded
  • Lava turns into magma
  • Magma cools and solidifies
  • Sedimentary rocks are put under high temperatures and pressure

8. Give an example of a sedimentary rock

  • Marble
  • Basalt
  • Limestone
  • Granite

9. What is the alloy amalgam used for?

  • Filling teeth
  • Making instruments
  • Car engines
  • Housing boilers

10. What are special about smart alloys?

  • They can be used in more than one thing
  • They return to their original shapes after being heated up
  • They can change colour
  • Their properties can change depending on their jobs

11. Which evidence in the 1960s helped scientists accept Wegner's theory?

  • Fossils of the same organism found on different continents
  • All of the above
  • Spreading sea floor
  • Countries looking like a jigsaw

12. Why can't the temperature be too high in the Haber process?

  • The percentage yield will be too high
  • The ammonia will begin to break down
  • It will cost too much
  • The atom economy will increase

13. Which raw materials are used in cement?

  • Clay and limestone
  • Limestone and gravel
  • Sand
  • Clay and sand

14. What is created on the surface of aluminum that stops it rusting?

  • Oxygen
  • Zinc oxide
  • Aluminium oxide
  • Rust

15. What causes euthrophication?

  • Aerobic bacteria using up oxygen and feeding on decaying plants
  • Fertilisers being washed off fields into rivers and ponds
  • Algae bloom
  • Sunlight not getting through the plants and the plants dying

16. How is information about the structure of the Earth collected?

  • Seismic wave and explosions
  • Drilling through the crust
  • The internet
  • The weather changes

17. What is the name for adding and acid and alkali together to reach a neutral solution?

  • Haber process
  • Titration
  • Salt making
  • Decomposition

18. Does the anode loose or gain mass in the electrolysis of copper?

  • Neither
  • Loose
  • Gain
  • Both

19. What is produced when an acid and a base react?

  • Carbon monoxide and water
  • Carbon dioxide and water
  • Salt and water
  • Salt and carbon dioxide

20. Which of these is NOT an advantage of recycling copper?

  • It doesn't produce any poisonous gases
  • It keeps the cost of copper down
  • It has a low melting point and doesn't need much energy
  • It reduces the need for mining and creates less environmental problems