Quantities such as temperature and pressure can be translated into which form for observation on an oscilloscope?

Temperature and pressure can be translated into voltage for observation on an oscilloscope due to the principles of transduction. Sensors that measure temperature or pressure typically convert these physical quantities into an electrical signal, often in the form of voltage. This process involves using transducers, which are devices that transform one form of energy into another.

For instance, a thermocouple converts temperature variations into voltage changes, while pressure sensors can do the same for changes in pressure. By doing this, the resulting voltage can be displayed on an oscilloscope, allowing for visual monitoring and analysis of the changes over time. Observing these voltage signals on an oscilloscope provides valuable insights into trends and variations related to the measured physical quantities.

The other options like current, frequency, and resistance are not directly representative of temperature or pressure in the same straightforward manner as voltage, primarily because they do not operate primarily through the same immediate transformation or measurement processes involved with the sensors used for temperature and pressure.