CIE iGCSE Co-Ordinated Science P1.1 Physical quantities and measurement techniques Exam Style Questions Paper 1
▶️ Answer/Explanation
Convert 4.5 cm to mm: \(4.5 \times 10 = 45\) mm. Divide by 500 sheets: \(45 \div 500 = 0.090\) mm per sheet.
This shows the advantage of measuring many sheets to reduce measurement error.
✅ Answer: (B)
This shows the advantage of measuring many sheets to reduce measurement error.
✅ Answer: (B)
▶️ Answer/Explanation
The pendulum passes point P once in each direction, so two passes make one complete oscillation. After the first pass, the student counts 10 more passes, which means 5 complete oscillations occurred in 8.0 seconds. Therefore, the period (time for one oscillation) is \( \frac{8.0}{5} = 1.6 \, \text{s} \).
✅ Answer: (C)
✅ Answer: (C)
▶️ Answer/Explanation
A measuring cylinder is designed to measure the volume of a liquid directly by reading the scale at the liquid’s surface.
Mass and weight require a balance or force meter, not a measuring cylinder.
Density requires both mass and volume, so a measuring cylinder alone is not enough to find it.
✅ Answer: (C)
Mass and weight require a balance or force meter, not a measuring cylinder.
Density requires both mass and volume, so a measuring cylinder alone is not enough to find it.
✅ Answer: (C)
▶️ Answer/Explanation
A measuring cylinder must be read at eye level, taking the reading from the bottom of the curved meniscus.
The scale shown runs between the marked 70 cm\(^3\) and 75 cm\(^3\) graduations.
Reading the meniscus position between these marks gives a volume of 73.5 cm\(^3\).
✅ Answer: (A)
The scale shown runs between the marked 70 cm\(^3\) and 75 cm\(^3\) graduations.
Reading the meniscus position between these marks gives a volume of 73.5 cm\(^3\).
✅ Answer: (A)
Question
A student uses a piece of string to measure the circumference of a pencil. He wraps the string around the outside of the pencil. The string wraps round exactly six times. He measures the length of string used with a rule.
What is the circumference of the pencil?
A 2.4 cm
B 2.6 cm
C 14.4 cm
D 15.4 cm
▶️Answer/Explanation
Answer: A 2.4 cm
Explanation: The total length of the string used is 14.4 cm, and since it wraps around the pencil 6 times, the circumference of the pencil is 14.4 cm ÷ 6 = 2.4 cm.