Across
- 2. a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space
- 3. the area surrounding a magnet where a magnetic
- 4. the pole of a magnet that points toward the south when the magnet is suspended freely
- 8. the terminal of a battery that is connected to the positive plate
- 11. instrument for measuring a small electrical current or a function of the current by deflection of a moving coil
- 12. an atom or group of atoms that has an electric charge
- 17. a force by which one object attracts another
- 18. a field of force that consists of both electric and magnetic components, resulting from the motion of an electric charge and containing a definite amount of electromagnetic energy.
- 19. the materials or substances which allow electricity to flow through them
Down
- 1. a material that resists the flow of electricity, heat, or sound
- 3. the force exerted by magnets when they attract or repel each other
- 5. protects our planet from cosmic radiation and from the charged particles of the sun
- 6. to force something to move away or apart
- 7. an electrical property where a particle or object has an excess of electrons
- 9. radiant energy that travels waves at the speed of light
- 10. to extend, spread, or move like rays
- 13. a form of radiation that travel though the universe
- 14. a device that converts motion-based power or fuel-based power into electric power for use in an external circuit
- 15. an electrical charge on an object that occurs when it has more protons than electrons
- 16. the two opposite ends of a magnet, where the magnetic field is strongest and where the magnetic force is most concentrated