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- 1. Multiple ChoiceIn a simple series circuit, why does a bulb light when you close the switch?because the switch produces electricitybecause closing the switch completes the circuitbecause closing the switch breaks the circuit
- 2. Multiple ChoiceIn a simple series circuit, why does the bulb go out when you close the switch?because the battery goes flatbecause opening the switch breaks the circuitbecause too much electricity flows through the bulb
- 3. Multiple ChoiceImagine a simple series circuit with one 1.5V battery and one bulb. When the 1.5V battery is replaced with a 3V battery...The bulb gets brighterthe bulb gets dimmerthe bulb stays at the same level of brightness
- 4. Multiple ChoiceImagine a circuit with a 1.5V battery and one bulb. Imagine a smaller circuit with a 3V battrty and 2 bulbs. Which one has brighter bulbs.the circuit with a 1.5V battery and one bulbthe circuit with 3V battery amd two bulbsthe bulbs in both circuits are one similar brightness levels
- 5. Multiple ChoiceWhy might a bulb flash and go out when a 1.5V battery and 3V battery are both connected across it in a simple series circuit?There is not enough electricity flowing around the circuittoo much electricity flows through the bulb's filament and the bulb blowsthe batteries are flat
- 6. Multiple ChoiceWhat is the effect of changing the wire in a circuit from a straight thick wire to a straight thin wire?the bulbs become dimmerthe bulbs become brighterthe bulbs stay at the same level of brit
- 7. Multiple ChoiceWhat is the effect of changing the wire in a circuit from a straight thick wire to a longer (coiled) thick wire?the bulbs become dimmerthe bulbs become brighterthe bulbs stay at the same level of brightness
- 8. Multiple ChoiceIn a circuit diagram, what does a circle with a cross inside it represent?a motora batterya light bulb
- 9. Multiple ChoiceWhat do the long straight lines represent in a circuit diagram?motorslight bulbswires
- 10. Multiple ChoiceHow does a battery represented in a circuit diagram?a circle with a cross inside ita circle with an M inside ita long line and a short line
- 11. Multiple ChoiceA material that lets electricity pass through it is called...?an electrical conductoran electrical insulatoran electrical appliance
- 12. Multiple ChoiceA matireal that does NOT let electricity to pass through it is called...?an electrical conductoran electrical insulatorand electrical appliance
- 13. Multiple ChoiceWhich is the following materials is an electrical conductor?silversilver-colored plasticcork
- 14. Multiple ChoiceWhich of the following materials is an electrical insulator?aluminumgoldrubber
- 15. Multiple Choicein which circuit willl the bulb or bulbs glow brightest?a simple circuit with one bulb and one batterya simple circuit with one bulb and two batteriesa simple circuit with two bulbs and one battery
- 16. Multiple ChoiceWhy is the bulb brighter when it is powered by two batteries rather than one?because the flow of electricity in the circuit is lessbecause the flow of electricity in the circuit is the samebecause the flow of electricity in the circuit is greater
- 17. Multiple ChoiceRuby has connected two bulbs across two batteries in a simple circuit. How can she make the bulbs dimmer?replace one of the batteries with a section of wirereplace one of the batteries with a corkreplace one of the bulbs with a section of wire
- 18. Multiple ChoiceRuby makes a complete simple circuit with one bulb and three batteries. The bulb lights for an instant and then goes out. Why?not enough electricity flows around the circuittoo much electricity flows through the bulbs filamentthe batteries are flat
- 19. Multiple Choicewhy is electrical wiring usually made from copper?because copper is shinybecause copper conducts electricitybecause copper is not magnetic
- 20. Multiple ChoiceWhy is electrical wiring usually covered with a layer of plastic?to make it look prettyto help electricity flow along the wireto make it safe
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