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Weegy: The law of conservation of energy describes the total amount of energy in a closed system stays the same. User: Energy transformations occur as energy changes from one form to another. As these transformations occur, which of the following happens? A. heat is given off B. pressure increases C. mass is combusted D. pressure decreases Weegy: Energy transformations occur as energy changes from one form to another. As these transformations occur, heat is given off. User: What type of energy transfer is made possible by a nine-volt battery in a calculator? A. light to mechanical B. electrical to chemical C. chemical to electrical D. electrical to electromagnetic Weegy: Chemical to electrical is made possible by a nine-volt battery in a calculator. User: Which of the following types of energy originates below Earth's surface? A. electrical energy B. geothermal energy C. mechanical energy D. electromagnetic energy Weegy: Geothermal energy originates below Earth's surface. (More)

Weegy: The medium has to be different to allow refraction to occur. User: What happens when a wave reflects? A. They are absorbed by the object they hit. B. They travel through the object they hit. C. They bend when they hit the medium. D. They bounce off the object they hit. (More)

Weegy: The Punic Wars were fought between Rome and Carthage. User: Which of the following was NOT a major crop produced in Rome? A. rice B. grain C. olives D. grapes Weegy: Rice was NOT a major crop produced in Rome. User: Pax Romana lasted from the reign of _____________ to ________________. A. Julius Caesar/Brutus B. Marc Antony/Octavian C. Hannibal/Julius Caesar D. Augustus Caesar/Marcus Aurelius Weegy: Pax Romana lasted from the reign of Augustus Caesar to Marcus Aurelius. User: Which civilization was the first to establish an urban society on the Italian peninsula? A. the Greeks B. the Harappans C. the Persians D. the Etruscans Weegy: The Etruscans was the first to establish an urban society on the Italian peninsula. (More)