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Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
Check
Across: 2. We measure electrical current (flow) in units called .... 4. Every battery has at least ... terminals. 5. A bulb converts electrical energy to ..... energy. 7. When I connect two bulbs in ...... they are dim and when one bulb is unscrewed they both go out. 8. This metal conducts electricity but it rusts easily and is not often used in circuits. 10. This red metal is a good conductor, doesn't rust easily and can be used to make wire for electrical circuits 11. This is the part of a bulb which glows white hot when electricity flows through it. 12. I should connect a switch on the ........ side of an electrical circuit. 15. A loud speaker or a buzzer converts electrical energy to ..... energy. 17. An ......... does not conduct electricity. 19. This is a device which converts chemical energy to electrical energy. 20. When I connect two bulbs in ........ they are both equally bright and when I unscrew one the other stays on.
Down: 1. Batteries are measured in units called ..... 3. A ..... will convert electrical energy to movement (motion) energy. 6. A battery has a positive and a ........ terminal. 9. A bulb will convert electrical energy to light and .... energy. 10. A ......... such as copper will carry electricity easily 13. A ...... can be used to turn a lamp off or on. 14. When one bulb fuses they all go out ! This is a common problem with Christmas .... lights. 16. When I connect three lights to a battery and they are dim it might mean that my circuit has a .... resistance. 18. If I connect 4 AA batteries end to end ( positive to negative) I'll get ... volts. 19. This device will convert electrical energy to light and heat energy.
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