Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

What is the unit of energy in the metric system and its common symbol?

Energy in the metric system is measured in joules, with the symbol J. A joule is defined as the work done when a force of one newton moves an object one meter, so it can be thought of as a measure of how much effort or energy is used to move something over a distance. This makes joule the appropriate unit for energy. The other options aren’t energy units: a watt measures power (the rate of energy transfer), a newton measures force, and a meter measures length.

Energy in the metric system is measured in joules, with the symbol J. A joule is defined as the work done when a force of one newton moves an object one meter, so it can be thought of as a measure of how much effort or energy is used to move something over a distance. This makes joule the appropriate unit for energy. The other options aren’t energy units: a watt measures power (the rate of energy transfer), a newton measures force, and a meter measures length.