Science

11.2/11.3/11.4 7th Grade Unit 2

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  • 1. Multiple-choice
    30 seconds
    1 pt

    At the end of a long road trip, Josh noticed the tires of the car were very hot.

    Which of these caused the tires to become hot?

    heat from the outside air

    rubber in the tires

    heat from the car’s engine

    friction between the road and the tires

  • 2. Multiple-choice
    30 seconds
    1 pt

    Hydroelectric plants generate power by utilizing the flow of water to turn a turbine. This, in turn, generates power that is then distributed for use in homes and businesses. What type of energy transformation is occurring at the hydroelectric plant?

    Electric energy is transformed into light energy.

    Kinetic energy is transformed into electric energy.

    Light energy is transformed into potential energy.

    Chemical energy is transformed into kinetic energy.

  • 3. Multiple-choice
    30 seconds
    1 pt

    A flashlight uses three different forms of energy. Which of the following is the correct order of the energy transformation to power the flashlight?

    Mechanical — Thermal — Light/Heat

    Electrical — Chemical - Light/Heat

    Chemical — Electrical —Light/Heat

    Light/Heat — Electrical — Chemical

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