8+Energy

**8th Grade: Energy **


Key Idea 4: Energy exists in many forms, and when these forms change energy is conserved.** ||~  ||
 * = **Month** || **November-December** ||~  ||
 * = **Duration** || **2 Weeks** ||~  ||
 * = **Content** || **Energy: Methods of Heat Transfer, Electromagnetic Spectrum, Properties of Waves** ||~  ||
 * = **Key Ideas** || **Standard 4: The Physical Setting
 * = **Standards** || * //**Performance Indicator 4.2: Observe and describe heating and cooling events**//
 * **4.2a: Heat moves in predictable ways, flowing from warmer objects to cooler ones, until both reach the same temperature.**
 * **4.2b: Heat can be transferred through matter by the collisions of atoms and/or molecules (conduction) or through space (radiation). In a liquid or gas, currents will facilitate the transfer of heat (convection).**
 * //**Performance Indicator 4.3: Observe and describe energy changes as related to chemical reactions.**//
 * **4.3a: In chemical reactions, energy is transferred into or out of a system. Light, electricity, or mechanical motion may be involved in such transfers in addition to heat.**
 * //**Performance Indicator 4.4: Observe and describe the properties of sound, light, magnetism and electricity.**//
 * **4.4a: Different forms of electromagnetic energy have different wavelengths. Some examples of electromagnetic energy are microwaves, infrared light, visible light, ultraviolet light, x-rays and gamma rays.**
 * **4.4b: Light passes through some materials, sometimes refracting in the process. Materials absorb and reflect light, and may transmit light. To see an object, light from that object, emitted by or reflected from it, must enter the eye.**
 * **4.4c: Vibrations in materials et up wave-like disturbances that spread away from the source. Sound waves are an example. Vibrational waves move at different speeds in different materials. Sound cannot travel in a vacuum.**
 * //**Performance Indicator 4.5: Describe situations that support the principle of conservation of energy.**//
 * **4.5a: Energy cannot be created or destroyed, but only changed from one form into another.**
 * **4.5b: Energy can change from one form to another, although in the process some energy is always converted to heat. Some systems transform energy with less loss of heat than others.** ||  ||
 * = **Relevant Vocabulary** || **conduction, convection, radiation, law of conservation of energy, sound, light, vacuum, electromagnetic energy, electromagnetic spectrum, reflection, refraction, microwaves, infrared light, visible light, ultraviolet light, x-rays, gamma rays, waves** ||  ||
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 * **<span style="display: block; color: rgb(222, 18, 18); text-align: center;">Additional Resources ** || ||