Question 1

Which of the following measurements has the greatest precision?

Accepted Answer

$$10.27 \ \mathrm{kg}$$

Question 2

How many significant figures are in the measurement $$0.013200972000$$?

Accepted Answer

$$11$$

Question 3

A laboratory scale gives a reading of $$0.0043 \ \mathrm{g}. $$How many significant figures does this measurement have?

Accepted Answer

$$2$$

Question 4

Which of the following numbers has exactly three significant figures?

Accepted Answer

$$015 \ \mathrm{kg}$$

Question 5

Why does $$10.27 \ \mathrm{kg}$$ have more precision than $$10 \ \mathrm{kg}$$?

Accepted Answer

It has more digits that actually matter (significant figures).

Question 6

Which step is NOT part of determining significant figures according to the provided steps?

Accepted Answer

Count all zeros regardless of position.

Question 7

A student records a mass as $$0.0032 \ \mathrm{kg}. $$How many significant figures are present?

Accepted Answer

$$2$$

Question 8

Which of the following best describes the difference between $$15 \ \mathrm{kg}$$ and $$015 \ \mathrm{kg} in $$terms of significant figures?

Accepted Answer

Both have two significant figures.

Question 9

Given the number $$73917000$$, how many significant figures does it have?

Accepted Answer

$$5$$

Question 10

A measurement is recorded as $$100.00. $$How many significant figures does this value have?

Accepted Answer

$$5$$

Question 11

Which of the following is true about trailing zeros in a number with a decimal point?

Accepted Answer

They are always significant.

Question 12

How many significant figures are in the measurement $$08.02$$?

Accepted Answer

$$4$$

Question 13

A scientist measures a sample and records $$0.013200972000. $$Which digits are NOT significant?

Accepted Answer

The leading zeros before the decimal point.

Question 14

If a measurement is written as $$3000$$ with no decimal point, how many significant figures does it have?

Accepted Answer

$$1$$

Question 15

Which of the following numbers has exactly two significant figures?

Accepted Answer

$$0.0032$$

Question 16

A measurement is recorded as $$33F. $$How many significant figures does this value have?

Accepted Answer

$$2$$

Question 17

Why are leading zeros not counted as significant figures?

Accepted Answer

They only serve as placeholders and do not indicate precision.

Question 18

A measurement is written as $$2.5F. $$How many significant figures does it have?

Accepted Answer

$$2$$

Question 19

Which of the following is the correct way to count significant figures in $$0.00320$$?

Accepted Answer

Ignore leading zeros, count all non-zero digits and trailing zeros after the decimal.

Question 20

A measurement is recorded as $$85F. $$How many significant figures does this value have?

Accepted Answer

$$2$$

Significant Figures and Precision in Physics Measurements

Study Guide - Practice Questions