Jill wants to model a energy transformation. She holds a book above the floor to give it potential energy. She then drops the book. What energy transformation occurs after she drops the book?

Joey wishes to improve the efficiency of his inclined plane. Which of the changes below will most likely improve the efficiency of his simple machine?

A student is developing a model to explain how an electric generator works. Which of the following is a way to generate an electrical current?

A student was designing a device to keep ice from melting. Which of the following would work best to minimize heat transfer by radiation?

A builder made sure that there were no spaces that air could get in around the windows in a new house he was building. He did this so it would be easier to heat and cool the house. What type of heat transfer was he trying to minimize by doing this?

What causes a person's hand to become cold when they pick up a glass of ice water?

When would a roller coaster car have the MOST potential energy?

A student builds an electric circuit to play a radio. The circuit contains a radio, wires and a hand-held electric generator. When he turns the handle on the generator the radio begins to play. Which best explains how the radio gets electric energy

A class was developing a model to explain heat transfer. What is the best way they could describe what happens if a cup of hot water loses heat by radiation?

Students were asked to design a way to improve the efficiency of a simple machine. What problem would they need to solve?

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