Which statement is true about energy units?

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Study for the Georgia High School Physical Science Test. Prepare with flashcards and multiple-choice questions, detailed hints and explanations included. Get ready for your exam!

Multiple Choice

Which statement is true about energy units?

Explanation:
Energy is measured in the SI system using the joule. A joule is defined as the work done when a force of one newton moves an object one meter, so it serves as the standard unit for energy, work, and heat in science. The other statements aren’t correct because calories are a unit of energy but not the SI unit, and temperature is measured in kelvin in the SI system (not in joules). Since 1 calorie equals about 4.184 joules, calories are commonly used in nutrition but not as the official SI unit.

Energy is measured in the SI system using the joule. A joule is defined as the work done when a force of one newton moves an object one meter, so it serves as the standard unit for energy, work, and heat in science.

The other statements aren’t correct because calories are a unit of energy but not the SI unit, and temperature is measured in kelvin in the SI system (not in joules). Since 1 calorie equals about 4.184 joules, calories are commonly used in nutrition but not as the official SI unit.

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