STAAR

A group of students is building the circuit represented in the diagram. What object can be used a Position X for the buzzer to sound when Switch K is closed?

• a power source

• another bulb

• an insulated wire

• another switch

A student wants to make a change to the circuit shown below 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 students should change the circuit?

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Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

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

• All the lights

• 1 and 2 only

• 3 and 4 only

• none of the lights

A student builds a circuit allowing the lightbulbs to light, the buzzers to make sound, and the motors to turn. Which two switches can be open and still allow all of the parts to work?

• Switches 1 and 3

• Switches 1 and 4

• Switches 2 and 3

• Switches 3 and 4

In some circuits that are used for decorating, one burned-out lightbulb will prevent the other lightbulbs from lighting. In other circuits, one burned-out lightbulb will have no effect on the other lightbulbs. In which of these circuits will the other light bulbs still light even if one bulb is burned out?

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All lightbulbs in this circuit are lit. Which change would cause all the bulbs to go out?

• Remove wire 1

• Remove wires 2 and 4

• Remove wires 2 and 5

• Remove wires 3 and 4

A group of students built the circuit shown below. The lightbulb does not glow. Which statement explains this observation?

• The battery is not charged.

• The lightbulb is not part of the complete circuit.

• The circuit does not have a switch.

• The bell uses most of the energy from the battery.

Tags

NGSS.4-PS3-2

Many types of fans are used in homes. One type of electric fan is shown. In addition to mechanical energy, which of these is produced as electric current passes through the circuit of this fan?

• heat

• mass

• light

• water vapor

A simplified diagram of a system using solar energy is shown. To recharge the battery for later use without lighting the bulb, which of the following switches should be closed?

• S

• R and S

• R and T

• All of them

Most cars have lights, power locks, radios, and other equipment that use electricity. Electric circuits power this equipment. Each circuit has a fuse that completes it. The picture below shows one type of fuse a car may have. Which of these describes one thing that could happen if the wire in a car fuse burns out?

• The car's lights will burn out.

• The car's radio will not work.

• The car's turn signal will blink too slowly.

• The car's power windows will open faster.