AQA GCSE COMBINED SCIENCE: TRILOGY 8464/P/2H Physics Paper 2H Mark scheme June 2023

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/P/2H Physics Paper 2H Mark scheme June 2023. A radio waves B microwaves C X-rays allow 1 mark if 2 correct 2 AO1 6.6.2.1 Question Answers Extra information Mark AO / Spec. Ref. 01.2 Similarity any one from: • same speed (in a vacuum) • both transfer energy • both transverse Difference any one from: • gamma has a higher frequency • gamma has a shorter wavelength • gamma is more ionising • gamma is more penetrating allow both can travel through a vacuum allow both are ionising allow both can harm living tissue allow both can be used for medical treatment / imaging allow gamma has more energy 1 1 AO1 6.6.2.2 Question Answers Extra information Mark AO / Spec. Ref. 01.3 refraction 1 AO1 6.6.2.2 MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/P/2H – JUNE 2023 8 Question Answers Extra information Mark AO / Spec. Ref. 01.4 wave speed = frequency × wavelength or v = f λ 1 AO1 6.6.1.2 Question Answers Extra information Mark AO / Spec. Ref. 01.5 3.0 × 108 = f × 5.0 × 10–7 f = 3.0 × 108 5.0 × 10−7 f = 6 × 1014 (Hz) allow a correct rearrangement using incorrect powers of 10 allow a correct calculation of f using incorrect powers of 10 allow 6.0 × 1014 (Hz) 1 1 1 AO2 6.6.1.2 Total Question 1 9 MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/P/2H – JUNE 2023 9 Question 2 Question Answers Mark AO / Spec. Ref. 02.1 Level 3: The plan would lead to the production of a valid outcome. All key steps are identified and logically sequenced. 5–6 AO1 6.5.4.2.2 Level 2: The plan would not necessarily lead to a valid outcome. Most steps are identified, but the plan is not fully logically