A full 40-mark Paper 032 style practice paper with three questions — Hooke’s law, refraction through glass, and Archimedes’ principle — with marks tagged for experimental skills and use of knowledge.
4 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.
Forty marks, three practical questions. Work through this paper in writing, as you would in the examination hall, then self-mark it against the scheme.
Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.
Copy these into your notebook in your own words — that is how they stick.
3 questions; 40 marks: Q1 14, Q2 13, Q3 13.
Experimental Skills [XS] 30; Use of Knowledge [UK] 10.
Extension x = L − L₀; F against x; k = gradient.
n = sin i ÷ sin r; graph of sin i against sin r.
U = weight in air − weight in water = weight of displaced water.
Quantity and unit in every heading.
2 h 10 min: about 3 minutes per mark.
Tick each point you earned and note missed skills.
8 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better. Work each item on paper first.
Write full answers, then reveal the mark scheme and tick the points you earned (40 marks in total). Show all your working — method marks count. Your answers are saved on this device.
Question 1 [14 marks]
A student investigates the stretching of a spring of original length 12.0 cm. Loads F = 0, 2.0, 4.0, 6.0 and 8.0 N give lengths L = 12.0, 14.1, 16.0, 18.1 and 20.0 cm.
(a) (a) Describe, with a labelled diagram, how the student should carry out the experiment. [6]
(b) (b) Draw a table with suitable headings and units for the results. [3]
(c) (c) State what should be plotted on each axis to find the spring constant. [1]
(d) (d) Using the readings, calculate the extension for the load of 8.0 N and the spring constant in N/cm. [2]
(e) (e) State what the straight line through the origin shows, and predict the extension for a load of 5.0 N. [2]
Question 2 [13 marks]
A student investigates the refraction of a ray through a rectangular glass block using a ray box, a protractor and a sheet of paper. The angles of incidence i = 20°, 30°, 40°, 50° give angles of refraction r = 13°, 19°, 25°, 30°.
(a) (a) Describe how the student obtains the readings. [5]
(b) (b) Draw a table for the results, including columns for sin i and sin r. [3]
(c) (c) State how a graph could be used to find the refractive index. [2]
(d) (d) Calculate the refractive index using i = 40° and r = 25°. [2]
(e) (e) State what happens to a ray that enters the block along the normal, and why. [1]
Question 3 [13 marks]
A student investigates the upthrust on a stone. The stone weighs 2.5 N in air and 1.5 N when fully immersed in water. The water displaced weighs 1.0 N.
(a) (a) Describe how the student measures the upthrust and the weight of the displaced water. [5]
(b) (b) Draw a table with suitable headings for the results. [3]
(c) (c) State two precautions to improve the accuracy of the measurements. [2]
(d) (d) Calculate the upthrust and state how it compares with the weight of water displaced. [2]
(e) (e) Explain why the stone appears lighter in water. [1]
Everything in this lesson is based on these parts of the CXC syllabus and papers.