Nov. 18 The energy used to move most bicycles is an example of what type of energy? A.Electrical B.Mechanical C.Chemical D.nuclear.

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Presentation transcript:

Nov. 18 The energy used to move most bicycles is an example of what type of energy? A.Electrical B.Mechanical C.Chemical D.nuclear

  On a hot day, Jenny walked home from the grocery store with a bag of chocolate chips. When she arrived home the chocolate chips had melted in the bag. Why did the chips melt?  A. Heat transferred from the chocolate chips to the bag.  B. heat evaporated from the bag to the chocolate chips.  C. heat transferred from the environment to the chocolate chips.  D. heat condensed from her hand to the chocolate chips. Nov. 19

  The bulb of a thermometer is placed in your mouth. Which of the following explains why the level of the liquid rises in the thermometer?  A. hot air rises inside the thermometer  B. heat energy changes into light energy  C. the liquid expands when heated  D. heat can change a solid into a liquid. Nov. 20

  Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot?  A. the hot water causes a chemical reaction to take place in the spoon.  B. the heat from the hot water is conducted to the spoon handle.  C. the hot water heats the air surrounding the upper part of the spoon.  D. the hot water causes a physical changes in the spoon handle. Nov. 21

  A block of ice on a glass plate is put on a metal shelf in a freezer. Which could cause the ice to change to liquid water?  A. putting a fan that blows on the ice inside the closed freezer  B. raising the temperature inside the freezer  C. wrapping a blanket around the ice inside the freezer  D. putting the ice directly on the metal shelf inside the freezer Nov.22