Year 10 Revision Quiz

What do humans use the Earth's resources for?

• food

• shelter

• warmth

• all of the above

Which of these is a renewable natural resource?

• copper

• crude oil

• natural gas

• timber

How is most potable water produced in the United Kingdom?

• desalination of salty water

• filtration and sterilisation of ground water

• treatment of waste water

• all of the above

Is potable water pure?

• it cannot be known because it depends on where the water comes from

• it cannot be known because it is not possible to test the purity of the water

• no, because it contains small amounts of dissolved salts

• yes, because it comes from a natural source

Which of these is not a stage in the treatment of sewage?

• anaerobic digestion of sludge

• screening

• sedimentation

• sterilisation with chlorine

Why are life cycle assessments sometimes said to be subjective?

• because it is not possible to quantify every stage of a products life cycle

• because they can be selective in the information they present

• because they can be misused to reach biased conclusions

• all of the above

Which product can be widely reused?

• aluminium foil

• glass milk bottles

• paper carrier bags

• polystyrene cups

which statement about recycling is not true?

• recycling an item is more energy-efficient than replacing it

• recycling helps to reduce the environmental impact of mining and quarrying

• recycling materials helps to preserve limited resources

• the raw materials used to make an item can only be recycled once.

What is meant by a pure substance?

• a clean, unpolluted susbtance

• a mixture containing elements only

• a natural substance that has nothing added to it

• a single element or compound not mixed with any other substance

Which of these is not an example of a formulation?

• air

• fertiliser

• medicine

• paint