Why is a standard unit of measurement necessary in science ad industry? 3 Match the following prefixes with the correct name: mega trillionth millionth kilo C. million nano D. billion deci billionth tenth micro G. thousand giga H. hundredth centi pico Indicate the standard units for measuring length, mass, volume, and temperature in the metric system. length volume mass temperature 5 Conversion between metric units is performed by shifting
The Correct Answer and Explanation is:
Correct Answers:
1. Why is a standard unit of measurement necessary in science and industry?
A standard unit of measurement ensures accuracy, consistency, and universal understanding across scientific and industrial fields. It eliminates confusion, allows replication of results, and enables comparison of data worldwide.
2. Match the following prefixes with the correct name:
| Prefix | Correct Name |
|---|---|
| Mega | Million |
| Trillionth | Pico |
| Millionth | Micro |
| Kilo | Thousand |
| Nano | Billionth |
| Deci | Tenth |
| Micro | Millionth |
| Giga | Billion |
| Centi | Hundredth |
| Pico | Trillionth |
3. Standard units in the metric system:
- Length: meter (m)
- Mass: gram (g)
- Volume: liter (L)
- Temperature: degree Celsius (°C) or kelvin (K)
4. Conversion between metric units is performed by shifting:
The decimal point.
Explanation (300 words, without using the word “we”):
Standard units of measurement serve as a foundation for communication in science and industry. Consistency in units ensures that values remain comparable, whether results are reported in different countries or replicated by different laboratories. Without standardized measurements, critical processes such as manufacturing, medication dosage, construction, and research would become error-prone and inefficient. This uniformity also supports trade and regulation by establishing clear specifications for products and materials.
Prefixes in the metric system modify base units to represent quantities that are larger or smaller. These prefixes are based on powers of ten, which makes calculations simpler. For example, “kilo-” indicates multiplication by 1,000, so one kilometer equals 1,000 meters. Conversely, “micro-” means one-millionth, or 0.000001 of the base unit. Recognizing these prefixes enhances understanding of very large and very small measurements frequently encountered in fields like physics, biology, and engineering.
Metric units are based on easily scalable standards. Length is measured in meters, mass in grams, volume in liters, and temperature typically in Celsius or kelvin. These units offer logical relationships; for instance, 1 liter equals 1,000 milliliters, and 1 kilogram equals 1,000 grams.
To convert between metric units, shifting the decimal point suffices. This simplicity reduces calculation errors. Moving the decimal to the right increases the unit’s magnitude, while shifting it to the left decreases it. This method, grounded in base-ten principles, makes the metric system both efficient and user-friendly for scientists, engineers, and industry professionals alike.
