Global dimming Study guides, Class notes & Summaries

greenhouse gas - Answer- a gas that contributes to the greenhouse effect by absorbing infrared radiation such as CFC's and carbon dioxide (unlike non greenhouse gases) Any gas that traps radiation in the Earth's atmosphere is a GHG. 5 major greenhouse gases - Answer- -carbon dioxide -nitrous oxides -Tropospheric ozone -Chlorofluorocarbons (CFCs) -methane IPCC (Intergovernmental Panel on Climate Change) - Answer- a scientific body under the United Nations. It reviews and assesses the ...

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2023. CH4 + 2 O2 → CO2 + 2 H2O 1 AO2 5.7.1.3 Question Answers Extra information Mark AO / Spec. Ref. 01.2 hydrocarbon molecules in petrol have fewer carbon atoms than those in diesel petrol has a lower boiling point (range) than diesel allow converse throughout allow petrol is more flammable than diesel allow petrol is less viscous than diesel 1 1 AO3 5.7.1.3 Question Answers Extra information M...

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2023. CH4 + 2 O2 → CO2 + 2 H2O 1 AO2 5.7.1.3 Question Answers Extra information Mark AO / Spec. Ref. 01.2 hydrocarbon molecules in petrol have fewer carbon atoms than those in diesel petrol has a lower boiling point (range) than diesel allow converse throughout allow petrol is more flammable than diesel allow petrol is less viscous than diesel 1 1 AO3 5.7.1.3 Question Answers Extra information M...

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2023. CH4 + 2 O2 → CO2 + 2 H2O 1 AO2 5.7.1.3 Question Answers Extra information Mark AO / Spec. Ref. 01.2 hydrocarbon molecules in petrol have fewer carbon atoms than those in diesel petrol has a lower boiling point (range) than diesel allow converse throughout allow petrol is more flammable than diesel allow petrol is less viscous than diesel 1 1 AO3 5.7.1.3 Question Answers Extra information M...

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2023. CH4 + 2 O2 → CO2 + 2 H2O 1 AO2 5.7.1.3 Question Answers Extra information Mark AO / Spec. Ref. 01.2 hydrocarbon molecules in petrol have fewer carbon atoms than those in diesel petrol has a lower boiling point (range) than diesel allow converse throughout allow petrol is more flammable than diesel allow petrol is less viscous than diesel 1 1 AO3 5.7.1.3 Question Answers Extra information M...

AQA GCSE CHEMISTRY 8462/2H Paper 2 Higher Tier Mark Scheme June 2022. use of oil has decreased by 0.8% or use of oil has decreased from 1.3% to 0.5% use of solar energy has increased by 3.4% or use of solar energy has increased from 0% to 3.4% any one from: • use of oil increased from 2007 to 2009 • no change in oil use between 2013 and 2015 • no change in solar energy use between 2007 and 2009 • use of solar energy increased most between 2013 and 2015 • between 2007...

ESS IB Final Exam Review 2023 with complete solution

MARK SCHEME – GCSE CHEMISTRY – 8462/2H – JUNE 2021 6 Step 1: Determine a level Start at the lowest level of the mark scheme and use it as a ladder to see whether the answer meets the descriptor for that level. The descriptor for the level indicates the different qualities that might be seen in the student’s answer for that level. If it meets the lowest level then go to the next one and decide if it meets this level, and so on, until you have a match between the level descriptor and th...

AQA Chemistry - Organic Chemistry Question With 100% Correct Answers How is crude oil formed? - ANSWER Over millions of years from the fossilised remains of plankton Where is crude oil found? - ANSWER In the porous rocks in the Earth's crust Is crude oil renewable or non-renewable? - ANSWER Non-renewable What is crude oil made up of? - ANSWER Hydrocarbons What give...

AQA GCSE PHYSICS 8463/1H Paper 1 Higher Tier Question 1 Question Answers Extra information Mark AO / Spec. Ref. 01.1 ammeter and voltmeter symbols correct voltmeter in parallel with lamp ammeter in series with lamp 1 1 1 AO1 4.2.1.1 RPA 4 01.2 smooth curved line of correct shape passing through - 4.0 V, - 0.2 A or – 6.0 V, - 0.23 A do not accept a line that becomes horizontal 2nd mark conditional on scoring 1st mark 1 1 AO2 4.2.1.4 RPA 4 ...