Electrical Circuits

A student constructs the circuit shown for a science demonstration. With the switches in these positions, which lights are on?

• All the lights

• Lights 1 and 2 only

• Lights 3 and 4 only

• None of the lights

A student wants to make a change to the circuit shown so that when Switch 1 is open and Switch 2 is closed, only one light will be on in the circuit. Which diagram shows how the student should change the circuit?

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Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

All the lightbulbs in this circuit are lit. Which change would NOT cause all the bulbs to go out? (Choose two correct answers)

• Remove Wire 2

• Remove Wire 1 and Wire 2

• Remove Wire 1 and Wire 6

• Remove Wire 2 and Wire 4

• Remove Wire 3 and Wire 6

Tags

NGSS.MS-ETS1-1

A student builds a circuit made up of a battery, two lightbulbs, and a switch, as shown below. What will the student most likely observe in this circuit?

• Lightbulb 1 and Lightbulb 2 will both be on.

• Lightbulb 1 will be off, but Lightbulb 2 will be on.

• Lightbulb 1 and Lightbulb 2 will both be off.

• Lightbulb 1 will be on, but Lightbulb 2 will be off.

Why does the bulb in a lamp light up when the switch is turned on?

Tags

NGSS.4-PS3-2

What are the three main parts of a circuit?

A family wants to decorate their house with lights for their Christmas party. It is important that when one light bulb burns out, the others will remain lit. They came up with two different options for connecting their lights. Which option should they choose?

• Option 1 because it is a parallel circuit and will provide a complete path for electricity to travel to each lightbulb.

• Option 2 because it is a parallel circuit and will provide a complete path for electricity to travel to each lightbulb.

• Option 1 because it is a series circuit and will provide a complete path for electricity to travel to each lightbulb.

• Option 2 because it is a series circuit and will provide a complete path for electricity to travel to each lightbulb.

Tags

NGSS.MS-ETS1-2

An object that needs electricity to operate will only work in a closed circuit. An example of this would be a lamp plugged into an electrical outlet. When the lamp is turned on, it creates a closed circuit. If the circuit is open, the lamp –

• needs to be removed

• glows brightly

• is not glowing

• blinks on and off

What will happen to the bulb when you turn the lamp off? Explain your answer.

Tags

NGSS.4-PS3-2

What is the function of a power source in a circuit?

• It provides a steady source of static electricity

• It provides a means through which the circuit can be broken

• It provides a path along which the electricity can flow

• It provides a steady flow of electrons

Tags

NGSS.MS-PS3-5