Level 3 - 5to 6 marks

Level 2 – 3 to 4 marks

Level 1 – 1 to 2 marks

Explain what clues geologists can use to explain the earths history.6 marks

Key wordsTectonic platesMantleMagnetisedClimateFossilsSedimentRipplesminerals

Hints

Discuss the structure of the

earth.

Explain magnetic clues in rocks.

Explain fossil evidence

Explain patterns found in

sedimentary rocks

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QWC - BubblesComplex answer

Extensive key words

Logical order

Excellent spelling, punctuation and

grammar

Detailed answer

Many key words

Clear order

Good spelling, punctuation and

grammar

Simple answer

Few key words

No order

Poor spelling, punctuation and

grammar

Level 3 - 5to 6 marks

Level 2 – 3 to 4 marks

Level 1 – 1 to 2 marks

Salt is extremely important in the food industry. It can be collected/extracted in three different ways. Underground mining, solution mining and from the sea. Discuss which method of salt extraction has the least impact on the environment.

6 marks

Key wordsExtractionRock saltSolution miningDepositsDissolveBrineEvaporateSubsidencePollutionPurity

Hints

Explain each type of

extraction

Discuss environmental

impacts

Provide evidence to

support your opinion

Give an opinion on which impacts the environment

the least

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QWC - BubblesComplex answer

Extensive key words

Logical order

Excellent spelling, punctuation and

grammar

Detailed answer

Many key words

Clear order

Good spelling, punctuation and

grammar

Simple answer

Few key words

No order

Poor spelling, punctuation and

grammar

Level 3 - 5to 6 marks

Level 2 – 3 to 4 marks

Level 1 – 1 to 2 marks

Discuss the risks and benefits of using salt in the food industry. What can be done about those risks?

6 marks

Key wordsPreservativeStrokeHeart attack High blood pressureProcessedFood StandardsAgencyGDARiskChoiceAdvice

Hints

List reasons for the use of salt

in the food industry

List health implications of

eating too much salt

Suggest what the government

can do to reduce risk

Discuss choices that people can make to reduce

risk.

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QWC - BubblesComplex answer

Extensive key words

Logical order

Excellent spelling, punctuation and

grammar

Detailed answer

Many key words

Clear order

Good spelling, punctuation and

grammar

Simple answer

Few key words

No order

Poor spelling, punctuation and

grammar

Level 3 - 5to 6 marks

Level 2 – 3 to 4 marks

Level 1 – 1 to 2 marks

Electrolysis is a method used to produce some very useful chemicals from salt solution. Discuss the products from the electrolysis of brine and their uses.

6 marks

Key wordsElectrolysisBrineSalt solutionChlorineDisinfectantsHydrogenFuelAmmoniaHydrogenationSodium hydroxideSoapbleach

Hints

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QWC - BubblesComplex answer

Extensive key words

Logical order

Excellent spelling, punctuation and

grammar

Detailed answer

Many key words

Clear order

Good spelling, punctuation and

grammar

Simple answer

Few key words

No order

Poor spelling, punctuation and

grammar

Describe how chlorine,

hydrogen and sodium

hydroxide are produced

List what products can be made from

chlorine, hydrogen and

sodium hydroxide

Discuss the benefits of these

products

Explain why there is little

waste products made by

electrolysis

Level 3 - 5to 6 marks

Level 2 – 3 to 4 marks

Level 1 – 1 to 2 marks

The data shows information from a river before and after an electrolysis plant was opened next to it. The plant was opened in 1963. Use the data to describe the change in the levels of mercury from 1956 to 1970 and suggest a reason for this. Discuss other environmental impact caused by

electrolysis. 6 marks

Key wordsElectrolysisPollutionEnvironmentImpactEnergyToxicResources

Hints

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QWC - BubblesComplex answer

Extensive key words

Logical order

Excellent spelling, punctuation and

grammar

Detailed answer

Many key words

Clear order

Good spelling, punctuation and

grammar

Simple answer

Few key words

No order

Poor spelling, punctuation and

grammar

Year 1956 1958 1960 1962 1964 1966 1968 1970

Mercury level (ppm) 0.2 0.1 0.1 0.3 1.1 2 1.9 2

Describe the trend in the

data over the years

Describe the change in

mercury levels after the

electrolysis plant was opened

Explain what problems the

increase in mercury might

cause

Level 3 - 5to 6 marks

Level 2 – 3 to 4 marks

Level 1 – 1 to 2 marks

Chlorine is used in water treatment. Discuss the advantages and disadvantages of using chlorine to treat water.

6 marks

Key wordsChlorinationDrinkingSafeTreatmentWHOLife expectancyCarcinogenicRespiratoryBurnRisk

Hints

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QWC - BubblesComplex answer

Extensive key words

Logical order

Excellent spelling, punctuation and

grammar

Detailed answer

Many key words

Clear order

Good spelling, punctuation and

grammar

Simple answer

Few key words

No order

Poor spelling, punctuation and

grammar

Describe the benefits of

using chlorine to treat water

Describe the risks of using chlorine

to treat water

Compare the benefits and risks and discuss which

is better

Use evidence of how water

treatment by chlorine has

reduced illness/deaths

Level 3 - 5to 6 marks

Level 2 – 3 to 4 marks

Level 1 – 1 to 2 marks

Alkalis have been produced for hundreds of years. Explain how alkalis are useful and reasons why the methods of production has changed over the years.

6 marks

Key wordsNeutralising soilDyesSoapsGlassSourcesManufacturingCostPollutionWasteToxicEfficiency

Hints

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QWC - BubblesComplex answer

Extensive key words

Logical order

Excellent spelling, punctuation and

grammar

Detailed answer

Many key words

Clear order

Good spelling, punctuation and

grammar

Simple answer

Few key words

No order

Poor spelling, punctuation and

grammar

Explain which is more efficient

Describe the Le Blanc process

and electrolysis for producing

alkalis

Discuss how electrolysis caused less

pollution than the L Blanc process

Compare products made

from Electrolysis and the Le Blanc

process