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In this unit students will learn about energy transformations through experimentation. They will be required to identify different forms of energy and different energy transformers. Students will identify renewable and non-renewable energy sources and be able to relate global issues such as climate change and economics to decisions countries make in addressing these issues. They will recognize the importance of greenhouse gases and how altering the volume of these maybe affecting our planets natural condition. Students will go on to learn about how these laws apply to electric circuits.

Learning targets

McREL: Science, McREL: Level III (Grades 6-8) , Physical Sciences

Standard 9. Understands the sources and properties of energy

  1. Knows that energy is a property of many substances (e.g., heat energy is in the disorderly motion of molecules and in radiation; chemical energy is in the arrangement of atoms; mechanical energy is in moving bodies or in elastically distorted shapes; electrical energy is in the attraction or repulsion between charges)
  2. Understands the law of conservation of energy (i.e., energy cannot be created or destroyed but only changed from one form to another)
  3. Knows that heat energy flows from warmer materials or regions to cooler ones through conduction, convection, and radiation
  4. Knows how the Sun acts as a major source of energy for changes on the Earth's surface (i.e., the Sun loses energy by emitting light; some of this light is transferred to the Earth in a range of wavelengths including visible light, infrared radiation, and ultraviolet radiation)
  5. Knows that electrical circuits provide a means of transferring electrical energy to produce heat, light, sound, and chemical changes
  6. Knows that most chemical and nuclear reactions involve a transfer of energy (e.g., heat, light, mechanical motion, electricity)
  7. Knows that vibrations (e.g., sounds, earthquakes) move at different speeds in different materials, have different wavelengths, and set up wave-like disturbances that spread away from the source
  8. Knows ways in which light interacts with matter (e.g., transmission, including refraction; absorption; scattering, including reflection)
  9. Knows that only a narrow range of wavelengths of electromagnetic radiation can be seen by the human eye; differences of wavelength within that range of visible light are perceived as differences in color

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