Across
- 2. energy produced by the heat of the earth
- 8. a liquid mixture of hydrocarbons that is present in certain rock strata and can be extracted and refined to produce fuels including gasoline, kerosene, and diesel oil; oil
- 9. a device having a designed resistance to the passage of an electric current
- 12. an electromotive force or potential difference expressed in volts
- 14. a circuit with two or more paths for current to flow through
- 15. movement in a particular direction
- 16. the SI base unit of electrical current
- 17. an electric current flowing in one direction only
- 19. the materials or substances which allow electricity to flow through them
- 21. a circuit which all circuit elements are arranged in a single path
- 23. the use of nuclear reactions to produce electricity
- 24. an odorless, gaseous mixture of hydrocarbons—predominantly made up of methane
- 25. an electric current that reverses its direction many times a second
Down
- 1. an instrument designed to measure electric current, voltage, and resistance
- 3. any organic material or waste that contains chemical building blocks like carbon or hydrogen
- 4. a drawing that defines the logical connections between components on a circuit board
- 5. the generation of electricity using flowing water
- 6. a material that makes up the main substance of a trunk or branches of a tree
- 7. a light-emitting diode
- 10. energy determined by the sun
- 11. relating to or denoting a mechanical device which is electrically operated
- 13. the natural movement of air
- 18. a sedimentary deposit composed predominantly of carbon that is readily combustible
- 20. the ability not to be affected by something
- 22. a construction base used to build semi-permanent prototypes of electronic circuits