A Hertz Is

question 18

Multiple Choice

A Hertz is

• A) a unit of wavelength
• B) a unit of frequency
• C) a unit of velocity
• D) a unit of loudness
• E) a well-known car-rental company

---

Definitions:

Butane

A hydrocarbon gas that is a constituent of natural gas and petroleum, used as fuel, in cigarette lighters, and as a propellant in aerosol sprays.

Biogas Digester

A device or structure that breaks down organic matter anaerobically (without oxygen) to produce biogas, a renewable energy source, and digestate, a nutrient-rich fertilizer.

Production Characteristics

Attributes or features that define the process and output of manufacturing or production activities.

Efficient

The ability to achieve a desired result without wasted energy or resource.