Measurement Quiz
Questions: 16 · 10 minutes
1. Which SI derived unit is used to measure force?
Joule
Pascal
Newton
Watt
2. A researcher wants to reduce the influence of random variation when timing a pendulum. What is the best approach?
Repeat the measurement and calculate the mean
Round the first result to a whole second
Replace seconds with minutes
Use only the shortest recorded time
3. Which instrument is best suited to measuring the duration of a short chemical reaction?
Stopwatch
Thermometer
Electronic balance
Metre rule
4. How can the volume of an irregular stone that sinks in water be measured most directly?
Measure the change in water level in a graduated cylinder
Multiply its length, width, and height
Divide its mass by the water temperature
Time how long it takes to reach the bottom of a container
5. A student repeatedly measures a standard 100.0 g mass and obtains 96.1 g, 96.2 g, and 96.1 g. What do these results indicate?
High accuracy and low precision
High accuracy and high precision
Low accuracy and low precision
High precision but low accuracy
6. A measured value is very close to the accepted value, but repeated measurements are widely scattered. How should the measurements be described?
Both precise and accurate
Accurate on average but not precise
Neither precise nor accurate
Precise but not accurate
7. Which instrument is most suitable for measuring the thickness of a single sheet of paper accurately?
Metre stick
Micrometer
Graduated cylinder
Laboratory thermometer
8. A rectangle measures 2.4 cm by 3.15 cm. Using the multiplication rule for significant figures, how should its area be reported?
8 cm²
7.6 cm²
7.56 cm²
7.560 cm²
9. Which SI base unit is used to measure length?
newton
litre
metre
gram
10. A container holds 250 mL of water. What is this volume in litres?
0.250 L
0.0250 L
2.50 L
250,000 L
11. A liquid in a graduated cylinder forms a concave meniscus. How should its volume normally be read?
From the top of the meniscus while looking down
From the bottom of the meniscus at eye level
From the top of the meniscus at eye level
From the bottom of the meniscus while looking up
12. A walking route is 2.5 km long. What is this distance in metres?
25,000 m
250 m
2,500 m
0.0025 m
13. An electronic balance reads 0.20 g when empty. It then reads 12.60 g with an object on it. Assuming the offset remains constant, what is the corrected mass of the object?
12.80 g
12.60 g
12.50 g
12.40 g
14. How many significant figures are in the measurement 0.00450 m?
Two
Four
Three
Five
15. A sample has a mass of 36 g and a volume of 12 cm³. What is its density?
0.33 g/cm³
2 g/cm³
432 g/cm³
3 g/cm³
16. Which instrument is most appropriate for measuring the mass of a small rock in a laboratory?
Graduated cylinder
Stopwatch
Spring ruler
Balance