Energy and Circuits

Front

Which 3 components will make a simple circuit?

Back

Battery, Light Bulb, and Metal Wire

Answer explanation

A simple circuit requires a Battery to provide power, a Light Bulb to use that power, and Metal Wire to connect them, allowing current to flow. The correct choice is Battery, Light Bulb, and Metal Wire.

Front

Which component of this circuit provides the circuit with energy? Options: Metal Wire, Light Bulb Holder, Light Bulb, Battery

Back

Battery

Answer explanation

The battery is the component that provides energy to the circuit. It converts stored chemical energy into electrical energy, allowing the circuit to function, while the other components do not supply energy.

Front

Will this bulb light up?

Back

Yes, it's a closed circuit.

Answer explanation

The bulb will light up because it is a closed circuit, allowing current to flow. An open circuit would prevent the flow of electricity, meaning the bulb would not light.

Front

Which of these bells would ring? (Hint: Which ones are on the complete loop?)

Back

Bell 1 and 4 only

Answer explanation

Bell 1 and 4 are on the complete loop, allowing them to ring. Bell 1 is connected to the mechanism, and Bell 4 completes the circuit. Bells 2 and 3 do not complete the loop, so they do not ring.

Front

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

Back

A battery or other energy source

Answer explanation

To light up the bulbs, a circuit needs a power source. A battery or other energy source provides the necessary electrical energy, allowing the current to flow through the wires and light the bulbs.

Front

Which of these is not an insulator? Styrofoam Cup, Metal Coat Hanger, Plastic Wrap, Wool Jacket

Back

Metal Coat Hanger

Answer explanation

The Metal Coat Hanger is not an insulator; it is a conductor of electricity and heat. In contrast, Styrofoam, Plastic Wrap, and Wool are all materials that resist the flow of heat and electricity.

Front

A student is trying to make a light bulb light up. What is the student most likely working with? Options: Thermal Conductors, Electrical Insulators, Electrical Conductors, Thermal Insulators

Back

Electrical Conductors

Answer explanation

The student is most likely working with Electrical Conductors, as these materials allow electric current to flow, which is necessary to light up a bulb. Thermal conductors and insulators do not facilitate electrical flow.

Front

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

Back

Only E would light up

Answer explanation

When the wire is cut at the shown location, the circuit for bulb D is broken, preventing it from lighting. However, bulb E remains connected to the power source, allowing it to light up. Therefore, only E would light up.

Front

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

Back

None of the bulbs would light up.

Answer explanation

When the wire is cut, the circuit is broken, preventing any current from flowing. Therefore, none of the bulbs D or E would light up.

Front

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

Back

D only

Answer explanation

When the wire is cut, it interrupts the circuit for bulb E, preventing it from lighting up. Bulb D remains connected to the power source, allowing it to light up. Therefore, only bulb D would light up.