1.8 Minerals

How does the extraction of minerals impact local ecosystems?

• It can lead to habitat destruction.
• It creates new habitats.
• It has no effect on ecosystems.
• It enhances biodiversity.

What can be inferred about the future of gold mining based on current trends?

• Gold mining will have no environmental impact.
• Gold will become less valuable over time.
• New technologies will make gold extraction easier.
• Gold deposits are becoming harder to find.

Which mineral is primarily used in the production of batteries?

• Aluminium
• Copper
• Lithium
• Iron

Which of the following best describes the term 'gangue' in mining?

• The equipment used in mining operations.
• The process of extracting minerals from the earth.
• The waste material left after extracting ore.
• The valuable part of a mineral deposit.

What is the main reason for the high demand for copper in electrical applications?

• It is the most abundant metal.
• It has excellent electrical conductivity.
• It is the cheapest metal available.
• It is resistant to corrosion.

Which of the following best explains why minerals can have the same chemical composition but different properties?

• They are formed at different temperatures.
• They contain different impurities.
• They have different crystal structures.
• They are found in different locations.

How does the presence of impurities affect a mineral's properties?

• They have no effect on properties.
• They can change the colour and hardness.
• They make minerals more valuable.
• They only affect the mineral's weight.

How do external factors contribute to the formation of mineral deposits?

• Through volcanic activity.
• By changing the chemical composition of minerals.
• Through processes like weathering and erosion.
• By increasing the temperature of the earth's core.

What can be inferred about the future of mineral resources based on current trends?

• All minerals can be easily recycled.
• New sources must be found in unexplored areas.
• Mining will have no impact on the environment.
• Mineral resources will become unlimited.

In what way does recycling metals help the environment?

• It decreases mineral availability.
• It increases the demand for new minerals.
• It reduces energy consumption in extraction.
• It creates more waste rock.