Question

State the name of the unit and the type of measurement indicated for each of the following quantities: a. \(4.8 \mathrm{~m}\) b. \(325 \mathrm{~g}\) c. \(1.5 \mathrm{~mL}\) d. \(480 \mathrm{~s}\) e. \(28^{\circ} \mathrm{C}\)

Short answer

a. length in meters, b. mass in grams, c. volume in milliliters, d. time in seconds, e. temperature in degrees Celsius

Step-by-step solution

- Analyze quantity a

Identify the unit and type of measurement for the given quantity. For a. the quantity is 4.8 m. The unit is 'm' which stands for meters, and the type of measurement is length.

- Analyze quantity b

Identify the unit and type of measurement for the given quantity. For b. the quantity is 325 g. The unit is 'g' which stands for grams, and the type of measurement is mass.

- Analyze quantity c

Identify the unit and type of measurement for the given quantity. For c. the quantity is 1.5 mL. The unit is 'mL' which stands for milliliters, and the type of measurement is volume.

- Analyze quantity d

Identify the unit and type of measurement for the given quantity. For d. the quantity is 480 s. The unit is 's' which stands for seconds, and the type of measurement is time.

- Analyze quantity e

Identify the unit and type of measurement for the given quantity. For e. the quantity is 28°C. The unit is '°C' which stands for degrees Celsius, and the type of measurement is temperature.

Key concepts

units of measurement

Units of measurement are vital in science as they let us quantify and compare different quantities. They offer a standardized method to express physical quantities. The International System of Units (SI) is the most widely used system. It includes fundamental units like meters for length, grams for mass, and seconds for time. Using these standardized units, science can communicate findings clearly and consistently across the globe.

Understanding units of measurement helps you accurately describe and interpret scientific data. Each unit corresponds with a dimension of measurement, such as length, mass, volume, time, and temperature. It’s essential to know and use the correct unit for each type of measurement.

length measurement

Length measurement refers to determining the distance between two points. The standard unit in the SI system is the meter (m).

Common Length Units Include:

• Millimeters (mm)
• Centimeters (cm)
• Meters (m)
• Kilometers (km)

These units allow us to measure objects ranging from very small, like the thickness of paper (millimeters), to very large, like the distance between cities (kilometers). In the context of the exercise, the quantity '4.8 m' pertains to length measurement.

mass measurement

Mass measurement assesses the amount of matter in an object. The standard SI unit for mass is the gram (g).

Common Mass Units Include:

• Milligrams (mg)
• Grams (g)
• Kilograms (kg)
• Tonnes (t)

Knowing the correct unit helps clarify whether you're measuring something light, like a paperclip (grams or milligrams), or heavy, like a car (kilograms or tonnes). In the provided exercise, '325 g' signifies mass measurement.

volume measurement

Volume measurement determines the space an object or substance occupies. The SI unit for volume is the liter (L), but milliliters (mL) are often used for smaller quantities.

Common Volume Units Include:

• Milliliters (mL)
• Liters (L)
• Cubic Centimeters (cm³ or cc)
• Cubic Meters (m³)

These units let us measure everything from a small vial of liquid (milliliters) to the volume of a swimming pool (cubic meters). In the exercise, '1.5 mL' refers to a volume measurement.

time measurement

Time measurement is crucial in both daily life and scientific experiments. The basic SI unit for time is the second (s).

Common Time Units Include:

• Seconds (s)
• Minutes (min)
• Hours (h)
• Days
• Years

Accurate timekeeping allows for precise tracking of events, durations, and intervals. For example, the exercise states '480 s,' which stands for the measurement of time.

temperature measurement

Temperature measurement reflects how hot or cold an object is. The standard unit in the SI system is degrees Celsius (°C), but in some regions, Fahrenheit (°F) and Kelvin (K) are also used.

Common Temperature Units Include:

• Degrees Celsius (°C)
• Degrees Fahrenheit (°F)
• Kelvin (K)

Temperature impacts various aspects of life and scientific experiments, from weather forecasts to chemical reactions. The exercise specifies '28°C,' showing us an example of temperature measurement.