Units of Measurement

Open Ended

Why is it important for scientists around the world to use a common system of measurement like the SI unit system?

Multiple Choice

Which of the following are SI base units?

• Second, Meter, Kilogram, Kelvin

• Minute, Inch, Pound, Celsius

• Hour, Yard, Gram, Fahrenheit

• Second, Centimeter, Ounce, Rankine

Fill in the Blank

Prefixes are added to SI base units to describe the range of possible measurements. These prefixes are based on multiples or factors of ___.

Multiple Choice

Which of the following prefixes represents the smallest value?

• kilo

• centi

• nano

• micro

Multiple Choice

What is the purpose of matching units when performing dimensional analysis, as shown in the conversion from centimeters to meters?

• To ensure the correct conversion factor is used

• To simplify the calculation

• To avoid unit cancellation

• To make the answer larger

Open Ended

Explain the difference between base units and derived units in the SI system.

Fill in the Blank

1 liter is equal to ___ milliliters.

Multiple Select

Which of the following are examples of derived units?

• Meter

• Kilogram

• Meters per second

• Cubic centimeter

Multiple Choice

A sample of aluminum has a mass of 13.5 g and a volume of 5.0 cm³. What is its density?

• 2.7 g/cm³

• 2.0 g/cm³

• 3.5 g/cm³

• 1.5 g/cm³

Multiple Choice

The system that includes kilometers is the system used by scientists worldwide. What is the name of this system?

• Imperial System

• SI Unit System

• Customary System

• Metric System

Open Ended

How do the examples of measurement in daily life, such as recording a baby's weight in hospitals or measuring gasoline at pumps, illustrate the importance of standardized units like the SI system?