5.6b

Jay uses various objects to complete a circuit. He compares how bright a bulb glows using each object. His results are shown here.

Which object is the BEST electrical conductor?

• nail

• eraser

• crayon

• pencil lead

Brayson made the circuit shown here in his science class. What is the most likely reason that the bulb is not lit?

• The bulb is cracked.

• He did not use the right size battery.

• He used too many pieces of wire.

• He left the switch open.

Tags

NGSS.3-5-ETS1-1

The picture shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow? (5.6B)

• 0

• 1

• 2

• 3

The student place different objects in the gap and turn on the switch to see if the light bulb lights up. Which object will best conduct electricity?

• A glass bead because it allows electricity to flow through

• A plastic button because it allows electricity to flow through

• A copper coin because it allows electricity to flow through

• A wooden toothpick because it allows electricity to flow through

The circuit in this picture has a battery, a light bulb, and three switches. All of the switches are open, and the light bulb is off.

Which of these combination of switches could be closed and cause the light bulb to remain off?

• X and Y

• Y and Z

• X and Z

• X, Y,, and Z

What other item does Sara need to make a complete circuit.

• a battery

• a switch

• an insulator

• a conductor

Tags

NGSS.3-5-ETS1-1

The rubber coating on a wire cord is __________________ because it does not allow electricity to pass through to you.

• magnetic

• a conductor

• an insulator

• a circuit

Tags

NGSS.MS-PS2-3

A material that does not allow electricity to flow through the circuit is known as a _______________.

• Conductor

• Source

• Transformer

• Insulator

A material that allows electricity to flow through the circuit without disruption is known as a _______________.

• Switch

• Transformer

• Conductor

• Source

A class prepared some electrical circuits using battery, connecting wires, and three light bulbs.  Which of these circuits can make the three bulbs light?

• A

• B

• C

• D

Tags

NGSS.3-5-ETS1-1