Please check the examination details below before entering your candidate information Candidate surname Other names Pearson BTEC Level 3 Nationals Certificate Centre Number Learner Registration Number Wednesday 16 January 2019 Afternoon (Time: 40 minutes) Paper Reference 31617H/1P Applied Science/Forensic and Criminal Investigation Unit 1: Principles and Application of Science I Physics SECTION C: WAVES IN COMMUNICATION You will need: A calculator and a ruler. Total Marks Instructions · Use black ink or ball-point pen. . Fill in the boxes at the top of this page with your name, centre number and learner registration number. · Answer all questions. · Answer the questions in the spaces provided - there may be more space than you need. Information . The total mark for this exam is 90. · The exam comprises three papers worth 30 marks each. Section A: Structure and functions of cells and tissues (Biology). Section B: Periodicity and properties of elements (Chemistry). Section C: Waves in communication (Physics). · The marks for each question are shown in brackets - use this as a guide as to how much time to spend on each question. . The formulae sheet can be found at the back of this paper. Advice · Read each question carefully before you start to answer it. · Try to answer every question. . Check your answers if you have time at the end. Turn over P6 18 0 6 A 0 1 1 6 ? Pearson P61806A @2019 Pearson Education Ltd. 1/1/1/1/1/1/1/C2
Answer ALL questions. Write your answers in the spaces provided. Some questions must be answered with a cross in a box X. If you change your mind about an answer, put a line through the box x and then mark your new answer with a cross X. 1 A slinky spring can be used to show different types of wave. Figure 1a shows a longitudinal wave on a slinky spring. The wave travels from P to Q. Figure 1b shows a 120 mm ruler. DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA P Q Figure 1a Ruler not to scale 0 20 40 60 80 100 Figure 1b 120 mm DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA (a) (i) Label a rarefaction in Figure 1a. (1) (ii) Give the wavelength of the longitudinal wave in the slinky spring. Use the ruler in Figure 1b. wavelength = mm (iii) Describe how a longitudinal wave is produced on a slinky spring. 2 (1) (2) DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA P 6 1 8 0 6 A 0 2 1 6
(b) Figure 2 shows a transverse wave travelling along a slinky spring. C B The slinky spring is being moved up and down to produce a transverse wave A DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA D Direction of energy transfer Figure 2 Which of the arrowed lines, A, B, C and D, shows the