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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?
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