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10 questions
Which of the following statements best describes the importance of scientific notation?
It is used to standardized writing numbers in the powers-of-ten.
It is used to report values with uniform format.
It is used to accurately report data from laboratory experiments.
It is used to easily write very small and very large quantities.
How many significant figures are there in 603.010 m?
3
5
6
4
6 022 140 760 000 000 000 000 mol⁻¹. How will you write it in the standard form of scientific notation with four significant figures?
6.022 ✕ 10²³ mol⁻¹
60.221 ✕ 10²² mol⁻¹
6.0222 ✕ 10⁻²³ mol⁻¹
6 023 ✕ 10¹⁸ mol⁻¹
What is the volume of a block of steel with a length of 10.6 cm, width of 7.32 cm and a height of 5.10 cm?
395
395.7
396
400.0
The speed of a car can be calculated by dividing the distance traveled by the unit time. What is the speed of the car in m/s if it traveled 5 300 m in 45 min?
1.96 m/s
2.0 m/s
120 m/s
7100 m/s
Which of the following quantifies the doubt that exists in any reported value of measurement?
Precision
Error
Precision
Uncertainty
A pendulum was reported to have a period of 2.25 ± 0.05 s. Which among the values below fall in this range?
2.10 s
2.31
2.29 s
2.09 s
Which of the following terms is defined as the difference between the true value and the measured value?
Mistake
Error
Deviation
Precision
How will you correct your measurement if the first 1 cm of your ruler is cut off?
Proceed with the measurement accordingly since 1 cm is very negligible.
Start measuring at the 2-cm mark then subtract 1 cm from the final measurement.
Use a more precise measuring device such as a micrometer caliper.
Use another measuring device with complete scale divisions.
The mass of a grain of sand is approximately 0.000000031 grams. How will you write it in the standard form of scientific notation?
0.31 ✕ 10⁻⁷ g
3.1 ✕ 10⁻⁸ g
3.1 ✕ 10⁸ g
0.0031 ✕ 10⁵ g
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