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- 1. Multiple ChoiceWhich of the following is a good insulator of electricity?PlasticAll solidsMetalsLiquid
- 2. Multiple ChoiceWhat is an electric circuit?A batteryA closed path that electricity can flow throughAn open path that electricity can flow throughA switch
- 3. Multiple ChoiceA group of students want to determine how much force is required to pull a toy car across a desk. Which tool should they use?magnetspring scalerulertriple beam balance
- 4. Multiple ChoiceStudents doing an investigation took 15 similar marbles and put 5 in one plastic bag and 10 in another plastic bag. They held both bags at the same height and dropped them at the same time. Which question can most likely be answered with data from this investigation?Do heavier objects fall faster?Would different kinds of marbles fall faster?Would the bag of marbles fall faster if they were dropped from a greater height?Does the material of the bag affect how quickly the bags of marbles fall?
- 5. Multiple ChoiceWhich of the following materials is used to cover electrical wires for safety because it is an insulator of electricity?CopperAluminumIronRubber
- 6. Multiple ChoiceA student placed a metal spoon and a wooden spoon in a pot of boiling water. After 10 minutes the metal spoon felt hotter to the touch than the wooden spoon. This shows that compared to wood, metal is___________________.a better conductora better insulatormore solidmore dense
- 7. Multiple Choice
The picture shows an electrical cord. Why is the cord made of both plastic and copper?The plastic is an insulator and the copper is a conductor of electricityThe plastic and the copper are both conductors of electricityThe plastic is a conductor and the copper is an insulator of electricityThe plastic and copper are both insulators of electricity - 8. Multiple ChoiceWhich item, when placed in an open circuit, would allow a light bulb to turn on?Plastic brushmetal pintoothbrushrubber ball
- 9. Multiple ChoiceThe picture shows an incomplete circuit. How could a student make this a complete circuit?add more batteriesclose the switchopen the switchdecrease the length of the wire
- 10. Multiple ChoiceRemoving the battery from this circuit will cause the ___________.light to turn offelectricity to flow into the lightcircuit to overloadelectricity to flow faster
- 11. Multiple ChoiceA group of students are investigating the effect of different surfaces (carpet, wood, tile) on the time it takes a toy car to roll 1 meter. The students are most likely measuring the effect of which of the following?gravityelectromagnetismfrictionelectricity
- 12. Multiple ChoiceA group of students wants to determine how much force is required to pull a toy car across a desk. Which tool should they use?spring scalerulermagnettriple beam balance
- 13. Multiple ChoiceA ball is set at the top of a ramp. The ball will not stay at the top of the ramp, instead it will roll down the ramp because of what force?frictionmagnetismgravitydensity
- 14. Multiple ChoiceSarah has a refrigerator magnet. She wants to see how many small pieces of paper her magnet can hold up on the refrigerator all at once. Which of the following explains what she should do?Start with a stack of paper, apply different magnets to the bottom of the stack until one of the magnets can hold the entire stack.starting with one piece of paper, apply the magnet to the bottom of the paper on the refrigerator and keep adding 5 pieces of the same type of paper at a time.Starting with one piece of paper, apply the magnet to the top of the paper on the refrigerator and keep adding identical pieces of paper under the amgnet, one at a time.Starting with a stack of different kinds of paper, apply the magnet to the top of the papers on the refrigerator and keep decreasing the amount of paper.
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