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1 Which would be the best research question to ask to discover whether or not a switch saved electricity in a complete circuit? A. How is the flow of electricity affected by adding more batteries to the complete circuit? B. How could you build a complete circuit using one battery, a switch and a light? C. Does the number of lights affect the amount of electricity a complete circuit uses? D. Does having a switch in a complete circuit change the amount of electricity used?

1 D. Does having a switch in a complete circuit change the amount of electricity used? Home

2 Using the chart, which statement is the best conclusion to describe the types of materials that carry the flow of electricity? A. Objects that have metal in them can usually conduct electricity B. Objects must have lots of mass to be able to conduct electricity C. Objects that have the ability to bend, like wire, only conduct electricity D. Objects that can be magnetized are the only ones to conduct electricity

2 A. Objects that have metal in them can usually conduct electricity

3 Mark and Eliza wanted to build an electric circuit using other materials besides the typical battery and copper wire. Which reference would be the best source to help Mark and Eliza? A. A textbook chapter on current electricity B. An encyclopedia referencing electrons C. A section of The Usborne Young Scientist on how electricity moves along a pathway D. An Internet site featuring common household objects used to make a complete circuit

3 D. An Internet site featuring common household objects used to make a complete circuit

4 A student wanted to experiment to see if adding more light bulbs to a circuit would cause the bulbs to be less bright. How would she test this? A. Connect one bulb to the battery then use a stronger bulb. B. Connect two bulbs to the battery on the same wire. C. Connect two bulbs to the battery with an open switch. D. Connect two bulbs to a double switch, and then turn them on.

4 B. Connect two bulbs to the battery on the same wire.

5 Ken wanted to make a light bulb glow. Which set of materials would he need? A. paper cup, paper clip, and a popsicle stick B. D-cell battery, wire, and a light bulb C. button, D-cell battery, and a rubber glove D. D-cell battery, paper, and a bulb

5 B. D-cell battery, wire, and a light bulb

6 Which type of electricity moves along a pathway to make a light turn on? A. Static electricity B. Lightning electricity C. Turbine electricity D. Current electricity

6 D. Current electricity

7 A student experimented with different items to see which would carry the flow of electrons. Which item would best fit in the chart? A. wooden toothpick B. blade of grass C. glass rod D. aluminum can

7 D. aluminum can

8 Which material acts as a conductor of electricity? A. popsicle stick B. rubber glove C. plastic button D. paper clip

8 D. D. paper clippaper clip D. paper clip

9 What will happen if you add more batteries to an electrical circuit containing light bulbs? A. No change B. The bulbs will dim C. The bulbs will be brighter D. The bulbs will last longer

9 C. The bulbs will be brighter Home