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