# Introduction to Physical Science

## Chapter 2: Measurement

### Section 1 Self-Check Quiz-Eng.

 1. If three measurements of a church steeple indicate that it is 22.21 m high, these measurements have a high degree of ________. Need a Hint? A) accuracy B) precision C) significant digits D) rounded digits 2. __________ is a way to describe the world with numbers. Need a Hint? A) Unit B) Multiplier C) Measurement D) Digit 3. ______ can help you make a rough measurement of an object by guessing. Need a Hint? A) Rounding B) Measuring C) Events D) Estimation 4. _______ describes how closely individual measurements agree with each other. Need a Hint? A) Accuracy B) Quality C) Precision D) Rounding 5. _____ compares a measurement to its real, or actual, value. Need a Hint? A) Precision B) Accuracy C) A significant digit D) Estimation 6. In 1999, the world record holder for the men's 100-m dash was Maurice Greene. His record-setting time was 9.79 s. Which portions of this information represent measurements? Need a Hint? A) world record B) Maurice Greene C) track and field D) the year 1999, 100 m, 9.79 s 7. Maurice Greene's record-setting time in the 100-m dash was 9.79. What was his time rounded to the nearest second? Need a Hint? A) 9.8 s B) 10 s C) 9 s D) 9.7 s 8. The number of digits that reflect the precision of a calculation are called ____________. Need a Hint? A) rounded digits B) significant digits or significant figures C) decimal places D) measurements