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Mechanical Energy Graphic Organizer Mechanical Energy is ___________________________________ ___________________________________________________. Mechanical Energy can be either ____________________________ ____________________________________________________. Mechanical Potential can be increased by_____________________ ___________________________________________________. Mechanical Kinetic can be increased by ______________________ ___________________________________________________. Examples of Mechanical Potential: (draw pictures and explain) 1. 2. Examples of Mechanical Kinetic: (draw pictures and explain) 1. 2. Thermal Energy Graphic Organizer •What is the difference in thermal energy and temperature? •What happens to the molecules of an object at a high temperature? Low temperature? •What direction does heat transfer occur? •What are examples of conduction, convection and radiation? •When heat melts an object or when heat evaporates an object, what type of energy transformation is taking place? •You must have a picture and written response! Energy Quiz Chemical, Nuclear, Thermal and Mechanical Short Answer: 1. Why is the metal spoon in your cup of hot chocolate hot? 2. Engineers have to put a lot of work into developing thrill rides such as roller coasters. How can the Law of Conservation of Energy be applied to a roller coaster? 3. Chemical and Nuclear energy are often confused with each other. What are some similarities and differences between the two. Multiple Choice: 4. A group of sheep are grazing in a field. As they eat, the sheep break down the molecules in the grass which releases energy. Which form of energy is stored in the grass? a. b. c. d. chemical energy elastic energy nuclear energy thermal energy 5. A toy robot can walk and talk and runs on batteries. What type of energy is stored in the batteries? a. chemical b. kinetic c. nuclear d. thermal 6. What type of energy is a form of electromagnetic energy? a. b. c. d. chemical light nuclear sound 7. When a hand-held fan is turned on, the blades spin. Which diagram shows the energy conversion that is required to make the fan work? A. electrical B. Chemical C. Chemical D. Electrical Thermal Light Electrical Electrical Chemical Light Kinetic Kinetic 8. Energy that is stored in the nucleus of an atom. It is released when a chemical reaction takes place. It can be used to run electrical power plants. a. b. c. d. electrical nuclear chemical thermal 9. Potential energy is energy that is stored. Food has stored energy that gives us energy throughout the day. This type of stored energy is know as a. b. c. d. electrical nuclear chemical thermal 10. In the west, wind energy is used. It is a way to use renewable resources, therefore helps the environment. What energy transformation could take place when using windmill energy? a. b. c. d. electrical mechanical thermal chemical mechanical electrical mechanical electrical light nuclear electrical heat Important Facts About Electric Circuits 1. There are two types of electric circuits. a. Two types of circuits 1. _____________ 2.______________ b. Diagrams of each: 1. 2. 2. Three main parts of a circuit: a. ___________________ 3. b. ___________________ c. ___________________ What is the main differences in the two types of circuits. a. _______________________________________________ b. _______________________________________________ Notes: *The greater the resistance=less voltage *Factors that affect resistance: -type of material- Metal is best (copper) -length of wire- Longer wire= more resistance -diameter of wire-Thin wire has more resistance -temperature of wire-Lower temp. has more resistance *Unit of measure-ohms Physical Science/Day Electricity Study Guide Test: 2/9/15 Vocabulary: (you should have definitions on note cards or graphic organizers) electrical energy, insulators, conductors, static electricity, electric field, conduction, circuit, current, electric charge, parallel circuit, series circuit, resistor, source, load, Questions: 1. What type of charge do electrons have? 2. What is the best material for conducting electricity? 3. 4. 5. 6. 7. 8. 9. 10. What happens in a series circuit if one bulb goes out? What are some examples of insulators? When do you have more resistance in a circuit? How can a bird sit on an electric wire and not get electrocuted? What charges are created during static electricity? What happens if you increase and decrease the voltage in a circuit? What direction does electricity flow? What is the difference in static and current electricity? Diagrams: Be able to identify diagrams of: 1. A series circuit 2. A parallel circuit 3. Identify if a parallel or series circuit will work. Magnetism: Divide your Graphic Organizer into 4 sections *Magnets attract-iron, nickel, cobalt and other magnets. *A magnet has two poles-north and south. *Like poles repel, unlike attract. *Magnetic field*Area surrounding a magnet. *Extends between the north and South Pole. *A magnet should never be dropped or heated. ********************************************* *Items that do not attract magnets: *Uses for magnets: *Draw a diagram of the magnetic field (p. 657) Electromagnetics: *A temporary magnet produced by an electric field. *Can be turned on and off *Strength depends on: 1. Size of the core- larger core=more strength. 2. Number of coils around the wiremore coils=more strength *Can reverse the poles *Uses: Junkyards, doorbells, video tapes, motors, electronics Magnets/Electromagnet Quiz 1. Opposite poles of a magnet ______. 2. Magnets have the greatest attraction at the ______. 3. The area around a magnet that is magnetized is called the ________ ______. 4. The three metals that are attracted to magnets are _____, _____ and ___. 5. You should never ______ or _____ a magnet, because it will reverse or damage the poles. 6. What three objects do you need to create an electromagnet? 7. What makes electromagnets different from permanent magnets? 8. What are some ways electromagnets are used in real life? 9. Name three ways you can increase the strength of an electromagnet. 10. Draw a diagram of an electromagnet.