Chapter 0.7 Measuring with Units

What is the primary purpose of quantifying observations in science?

• To make objective comparisons

• To make subjective comparisons

• To avoid taking measurements

• To ignore trends

Which of the following is NOT a physical quantity mentioned in the passage?

• Length

• Time

• Color

• Mass

What must always be included in any measurement of a physical quantity?

• A number and a unit

• A number only

• A unit only

• A description

Which unit system is primarily used in the United States for nonscientific purposes?

• United States Customary System (USCS)

• Système International (SI)

• Metric System

• Decimal System

What is one major advantage of the metric system mentioned in the passage?

• It uses a decimal system

• It is used only in the United States

• It does not require units

• It is based on subjective comparisons

According to the passage, what does the prefix 'kilo-' indicate?

• 1000

• 0.001

• 100

• 10

Which of the following countries does NOT continue to use the USCS?

• Liberia

• Myanmar

• Canada

• United States