Earth Science Vocab

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Across
  1. 5. A charge that exists in a body that has fewer electrons than protons
  2. 7. the Flow of electric charge, usually electrons, through a conductor
  3. 8. a Model used to predict 3-D molecular geometry based on the number of valence shell electron bond pairs among the atoms in a molecule or ion. This model assumes that electron pairs will arrange themselves to minimize repulsion effects from one another.
  4. 11. is radiant energy that travels in waves at the speed of light. It can also be described as radiant energy, electromagnetic radiation, electromagnetic waves, light, or the movement of radiation
  5. 12. Emit (energy, especially light or heat) in the form of rays or waves.
  6. 13. An atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and -opposite to the charge of a proton, which is considered to be positive by convention.
  7. 14. Region at each end of a magnet where the external magnetic field is strongest.
  8. 15. a North-seeking pole of a magnet.
  9. 17. a Material in which electric current does not flow freely. The atoms of the insulator have tightly bound electrons which cannot readily move.
  10. 18. The state of having a surplus of electrons; having a lower electric potential.
  11. 20. a Machine that converts one form of energy into another, especially mechanical energy into electrical energy
Down
  1. 1. one of the instruments for measuring electrical current par excellence. This device is used on electrical circuits to know and measure the intensity and direction of electrical current.
  2. 2. a physical field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials
  3. 3. Phenomenon associated with magnetic fields, which arise from the motion of electric charges
  4. 4. or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field
  5. 6. To force (something) to move away or apart
  6. 9. a Combination of invisible electric and magnetic fields of force. They are generated by natural phenomena like the Earth's magnetic field but also by human activities, mainly through the use of electricity.
  7. 10. the South-seeking pole of a magnet.
  8. 16. Force of attraction refers to any particular force that draws two objects or particles towards each other
  9. 19. In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge in one or more directions. Materials made of metal are common electrical conductors.