Topic 5 Energy Review

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Across
  1. 4. A ________________ circuits has no gaps to stop the flow of electricity.
  2. 7. When you plug in a fan, it transforms electrical energy to _____________ energy.
  3. 9. ________________ are the building blocks of matter.
  4. 10. When sound energy vibrates quickly, it has a _________ pitch.
  5. 13. An electric current is the flow of __________________ particles.
  6. 14. After rubbing a balloon on your hair, your hair is attracted to the balloon since the balloon now has a ________________ charge.
  7. 15. In a _________________ circuit, there is only one path for the current can follow.
  8. 17. Reflection is when light ____________________ off an object; still moves in a straight line.
  9. 21. _____________________ make strong resisters.
  10. 22. A radio plugged into the wall that creates sound energy, begins with ___________________ energy.
  11. 23. A neutrally charged object and a negative charge object will __________ each other.
  12. 25. Potential energy is energy an object has due to its ________________ or state.
  13. 26. In an electric circuit, there is usually some incidental _________ energy created.
  14. 27. _____________________ materials let some light pass.
  15. 30. Rubber prevents the flow of an electric _____________________.
  16. 31. When a wire in a circuit is not connected the electric current cannot ___________.
Down
  1. 1. _____________________ is a property of sound described as loud or soft.
  2. 2. Light travels in a _____________ line.
  3. 3. Microscopes, cameras, and other types of lenses ______________ light.
  4. 5. _____________ is the energy of motion.
  5. 6. Sound energy travels through the ____________________ of particles.
  6. 8. The __________________ of an atom is made of protons and neutrons.
  7. 11. An electric ___________________ transform one type of energy into another.
  8. 12. Humans have this _____________ energy from the food they eat.
  9. 16. A ____________________ is used in a circuit to turn a device on and off.
  10. 18. Insulators keep _________________ charges inside the pathway in a circuit.
  11. 19. In a parallel circuit, devices are connected by ___________ than one loop.
  12. 20. If the number of _________________ and electrons are equal, then an object has a neutral charge.
  13. 24. Mechanical energy is a combination of kinetic energy and _____________________ energy.
  14. 28. Electrons move away from the negative end of the battery because the same type of charges __________ each other.
  15. 29. Particles in a circuit _____________ a path to follow.