Physics > GCSE MARK SCHEME > Mark Scheme (Results) January 2022 Pearson Edexcel International GCSE In Physics (4PH1) Paper 2PR. G (All)
Mark Scheme (Results) January 2022 Pearson Edexcel International GCSE In Physics (4PH1) Paper 2PR. Graded A+
Document Content and Description Below
Question number Answer Notes Marks 1 (a) (i) each tick correctly placed in each row;;;; more than one tick in a row negates the mark 4 (ii) petrol generator; 1 (b) any two from: ignore statemen... ts relating to cost 2 MP1. idea of noise pollution; ignore bald ‘pollution’ MP2. idea of visual pollution; ignore bald ‘pollution’ MP3. idea that turbine only generates electricity when the wind blows; MP4. difficult for output to match demand; ignore ‘do not generate much electricity/energy’ MP5. wind is a dilute source of energy; allow idea that wind farms take up a lot of space MP6. can cause harm to migrating flocks of birds; Total for Question 1 = 7 marks https://britishstudentroom-b430a.web.app/Question number Answer Notes Marks 2 (a) (i) substitution into F = (mv – mu)/t; 3 evaluation; -1 if POT error correct direction; independent mark 208.3… scores 2 marks max. if given with correct direction e.g. (F =) (6.7 - −4.2) / 0.012 (F =) 910 (N) allow 908.3…(N) (direction =) right allow forwards ignore compass directions 0.9083… scores 1 mark (ii) same forces as in (a)(i) AND opposite direction; allow ECF from (a)(i) for both points 1 allow ECF for compass direction only if opposite to direction given in (i) e.g. (F =) 910 (N) AND (direction =) left (b) any three from: 3 MP1. idea that there is a change of momentum (when ball hits player); MP2. (equipment) increases (impact) time; MP3. decreases rate of change of momentum (of ball); MP4. decreases force (on player); MP5. decreases pressure (on player); allow spreads force over larger area Total for Question 2 = 7 marks https://britishstudentroom-b430a.web.app/Question number Answer Notes Marks 3 (a) any five from: allow alternative approach using echoes from a wall 5 MP1. idea that students stand a large distance apart; allow stated distance if 50m or greater allow a large distance from a wall (at least 25m) MP2. measure distance with tape measure / trundle wheel; ignore ruler MP3. start timing when see blocks hit together; allow idea of setting of a rhythm if wall method used MP4. stop timing when hear sound from blocks being hit together; allow dividing total time by number of hits if wall method used MP5. measure time with stopclock / stop watch; ignore timer MP6. take repeats and determine mean; allow take repeats to identify anomalies MP7. use of speed = distance / time; allow use of speed = 2×distance / time if wall method used MP8. use of a distance-time graph to find speed from gradient; (b) (i) mean calculated correctly; [Show More]
Last updated: 2 years ago
Preview 1 out of 12 pages
Buy this document to get the full access instantly
Instant Download Access after purchase
Buy NowInstant download
We Accept:
Reviews( 0 )
$9.00
Can't find what you want? Try our AI powered Search
Document information
Connected school, study & course
About the document
Uploaded On
Jun 27, 2022
Number of pages
12
Written in
Additional information
This document has been written for:
Uploaded
Jun 27, 2022
Downloads
0
Views
134
