Final answer:
The correct prefix for the number "trillions" is 'Tera-' (D). Tera- represents a trillion units, which is 10¹² or 1,000,000,000,000. The correct answer is D. tera
Step-by-step explanation:
The appropriate prefix for the named number "trillions" in the context of metric units is Tera (D). Metric prefixes are standardized through the International System of Units (SI) and are based on powers of 10. To provide additional context:
- 1 kilogram (kg) is equal to 1,000 grams, represented by the prefix kilo, which means 1,000 or 10³.
- The prefix for "thousand" is 'kilo-'.
- The prefix indicating 0.01 is 'centi-', meaning 1/100 or 10⁻².
- 500 milliliters (mL) would be written as 0.5 liters (L) or 500 x 10⁻³ L.
- There are 10 decimeters (dm) in one meter (m).
- If you have a mass of 1.2 hectograms (hg), it would weigh 120 grams (g), since 1 hg = 100 g.
- The SI unit for mass is the kilogram (kg), but other masses are converted to kilograms for scientific notation and standardization.
- For computer memory, the unit for one million bytes is a Megabyte (MB).
When dealing with astronomical distances or large numbers in general, scientific notation and metric prefixes are essential to effectively and simply represent these values.