Grade 8 Science SOL Review 7

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Across
  1. 2. Unit for current represented by either “amp” or the letter “A.”
  2. 7. The law that states that resistance in a circuit is equal to voltage divided by current.
  3. 8. A material that transmits heat well OR allows electric charges to flow
  4. 12. An electric circuit in which different parts of the circuit are on separate branches
  5. 13. the process of splitting a larger nucleus into two nuclei with smaller masses, which produces a large amount of energy as well as thermal and radioactive waste.
  6. 14. Energy release from the nucleus of the atom. Occurs when two smaller atoms make a larger atom. More energy is released than in fission
  7. 15. current consisting of charges that move back and forth in a circuit
  8. 16. The complete range of electromagnetic waves placed in order of increasing frequency.
  9. 17. The region around a magnet where the magnetic force is exerted.
  10. 18. A power supply that converts stored chemical energy into electrical energy and produces a direct current.
Down
  1. 1. A wave that moves the medium in a direction parallel to the direction in which the wave travels.
  2. 3. composed of semiconductor material, which combines some properties of metals and some properties of insulators. That makes it uniquely capable of converting light into direct current electricity (also known as solar cells.)
  3. 4. An electric circuit in which all parts are connected one after another along one path.
  4. 5. A magnet created by wrapping a coil of wire with a current running through it (solenoid) around a core of material that is easily magnetized (ferromagnetic).
  5. 6. Light travels at a constant, finite speed of 300,000 km/s (186,000 mi/s) A traveler, moving at the speed of light, would circumnavigate the equator approximately 7.5 times in one second
  6. 9. Electricity produced by the kinetic energy of water moving over a waterfall or dam.
  7. 10. Current made up of charges that flow in only one direction in a circuit.
  8. 11. A type of resistor which only allows current to travel in one direction. Diodes are used to protect circuits in AC applications.