Energy and Circuits

Which 3 components will make a simple circuit?

• Battery, Insulator, and Light Bulb

• Light Bulb, Metal Wire, and Bell

• Battery, Light Bulb, and Metal Wire

• Plastic Wire, Light Bulb, and Battery

Answer explanation

For a simple circuit, you need an energy source (battery), a conductor (metal wire), and a load (light bulb)

Which component of this circuit provides the circuit with energy?

• Metal Wire

• Light Bulb Holder

• Light Bulb

• Battery

Answer explanation

The battery is the energy source for this circuit.

Tags

NGSS.MS-PS3-5

Will this bulb light up?

• Yes, it's an open circuit.

• No, it's an open circuit.

• Yes, it's a closed circuit.

• No, it's a closed circuit.

Answer explanation

Yes, the bulb will light up because it's a closed circuit that makes a complete loop from the negative end to the positive end.

Tags

NGSS.MS-PS2-3

Which of these bells would ring?

(Hint: Which ones are on the complete loop?)

• Bell 1 and 2 only

• Bell 1 and 3 only

• Bell 1 and 4 only

• Bell 1, 3, and 4 only

Answer explanation

If you trace a complete loop from the negative end to the positive end, only bell 1 and 4 are on that loop.

A circuit is made with 2 light bulbs and 3 copper wires. What component is missing for the light bulb to light up?

• Another metal wire

• Another light bulb

• An insulator on the wire

• A battery or other energy source

Answer explanation

A circuit can not work unless it's closed and also has an energy source. Without the battery, there is no energy.

Tags

NGSS.MS-PS3-5

Which of these is not an insulator?

• Styrofoam Cup

• Metal Coat Hanger

• Plastic Wrap

• Wool Jacket

Answer explanation

Metals are conductors, so a metal knife is a conductor of heat.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A student is trying to make a light bulb light up. What is the student most likely working with?

• Thermal Conductors

• Electrical Insulators

• Electrical Conductors

• Thermal Insulators

Answer explanation

A light bulb will require electrical energy to light up, and conductors will allow the energy to flow through the circuit.

Tags

NGSS.MS-PS2-3

Which of these bulbs would be lit if the wire was cut at the location shown?

• Both D and E would light up

• Only D would light up.

• Only E would light up

• None of the bulbs would light up.

Answer explanation

if the wire was cut as show, the electricity can still flow in a closed circuit from the negative end to Bulb E and back to the positive end of the battery.

Tags

NGSS.MS-PS2-3

Which of the bulbs would be lit if the wire was cut as shown in the picture?

• Only D would light up.

• Only E would light up.

• Both D and E would light up.

• None of the bulbs would light up.

Answer explanation

If the wire was cut at the spot shown, none of the bulb would light up because there are not complete loop from the negative end to the positive end.

Which of the bulbs would light up if the wire was cut as shown in the picture?

• D only

• E only

• Both D and E

• None

Answer explanation

The can still flow from the negative end of the battery to Bulb D and back to the positive end of the battery, forming a complete loop (or closed circuit).