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Understanding Circuits: Current, Energy, and Materials

Learn about circuits, currents, and materials used in electrical systems. Understand the concept of an atom and how electricity flows. Discover the different types of circuits and energy produced in various devices.

johnrogers
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Understanding Circuits: Current, Energy, and Materials

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  1. Circuits Energy Materials Charges More Circuits 1pt 1 pt 1 pt 1pt 1 pt 2 pt 2 pt 2pt 2pt 2 pt 3 pt 3 pt 3 pt 3 pt 3 pt 4 pt 4 pt 4pt 4 pt 4pt 5pt 5 pt 5 pt 5 pt 5 pt

  2. What is the constant flow of electrons through a wire?

  3. Current!

  4. Which circuit has more than one path for the current to travel? series parallel

  5. Parallel (This circuit has MORE than one path.) (This series circuit has ONLY one path)

  6. What kind of circuit has only only ONE path for the current to travel?

  7. Series circuit! If one light burns out, all lights turn off.

  8. If one bulb on a strand of Christmas lights burns out but the other lights stay lit, you know that the strand of lights is on what kind of circuit?

  9. Parallel circuit One bulb can burn out and the rest will stay on! All bulbs have their own path of wire back to the power source.

  10. What is the device used to open and close a circuit?

  11. a switch

  12. What kind of energy are radios designed to produce for our listening enjoyment?

  13. Sound energy Sonic boom as a jet goes through the sound barrier.

  14. What is the most noticeable energy produced when you plug in and turn on a lamp?

  15. LIGHT ENERGY (and also some heat energy)

  16. Turning off the lights and T.V. when you leave a room is a way to save energy or ______ it.

  17. conserve energy.

  18. Sometimes in a closed circuit special metals like tungsten become hot and some of the thermal (heat) energy is transferred to the air as radiation which produces ______. An example is the filament inside a bulb.

  19. light

  20. A ceiling fan (mechanical), a toaster (thermal), and even a computer require _______ energy to operate.

  21. electrical energy (And these things do not use electricity: can opener, books, pencil, and chalk board.)

  22. What is the component in a circuit that allows a current to pass through easily?

  23. Conductor (wire) copper wire aluminum wire

  24. What are materials that electricity does NOTflow through easily and prevents the current from escaping?

  25. INSULATION

  26. Rubber or plastic is used as a covering for the wires of an electrical cord because they are both known to be ___________.

  27. insulators Insulated wire

  28. What is a substance used to make most electrical wiring because it is known to be a good conductor of electricity? Pennies are also made of this.

  29. Copper!!

  30. The base of a light bulb is made of metal because metal is a good _______ of electricity. base

  31. conductor base

  32. The smallest unit of matter is an

  33. ATOM

  34. What is static electricity?

  35. The buildup Of electrons

  36. What are electrons?????????

  37. Negatively Charged

  38. What are two examples of currents?

  39. Lightning And Waves in ocean

  40. What is an electrical charge that has more protons than electrons?

  41. Positive Charge

  42. An electromagnet needs an ____________ ____________ to produce a magnetic field.

  43. electric current current The current magnetizes the nail. It can be turned on and off with a switch. Because of this, we are able to make motors that turn. Picture the nail spinning as it repels and is attracted to the magnet around it.

  44. For this gadget to work correctly, it must have a battery, a switch, a light bulb, and a conductor (wire). What is it? Hints: It is on a series circuit. The British call it a torch!

  45. A flashlight!

  46. What is necessary for a flashlight to operate because it provides the energy?

  47. The battery, also called an electric or dry cell. It changes chemical energy into electrical energy.

  48. Sometimes an electric charge builds up on a material. Walking across a carpet or rubbing a balloon can cause….

  49. static electricity

  50. This is a model of an atom. Matter (solids, liquids, and gases) is made of atoms. The middle part has protons (positive charge) and the spinning around parts are electrons (negative charge). When we spin conductors (wire) through the magnetic field of magnets, we get a flow of electrons called _______________.

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