dvd_Key5.pcf - Part 1: Circle the correct answer. Each is...

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1: Circle the correct answer. Each is worth 5 points. 1. The planet Earth can be considered a closed system (no energy enters or leaves the planet). TRUE 2. Which of the following things generally do not increase potential energy? A. Moving a book to a higher shelf. 11 9 I VI c r-l. .i.L- j @ Rolling a ball along the floor. ~ \ ¥1 <. I~ ('oU) C. Stretching a rubber band. U f i VI (. r--l r J{ ) 3. If my system consists only of a book, which I pick up and move to a higher shelf , what happens to the energy of the system? A. It decreases. @ It stays about the same. C. It increases. 4. If my system consists only of me, and I lift a book up to a higher shelf, what happens to the energy of the system? A. It decreases. B. It stays about the same. C. It increases. 5. Ifm y system consists of me, a book, the Earth's gravity and everything in the room , and I lift the book to a higher shelf, what happens to the energy of the system? A.
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dvd_Key5.pcf - Part 1: Circle the correct answer. Each is...

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