Student Sample Lab Report
Identify:
My partner and I will be able to find the difference between insulators and conductors. We will find the difference between when a conductor is added to a circuit vs. when an insulator is added to a circuit.
Hypothesis:
My partner and I believe that when a conductor is added to a circuit the light bulb will light up, but when an insulator is added to a circuit the bulb will not light up. We think this because in an insulator the charges are not going to the light bulb causing it no to light up but in a conductor the charges are moving through making the bulb light up.
Materials:
● 1 battery
● 1 battery holder
● 3 insulated wires
● 1 light bulb
● 1 light bulb holder
● wrench, water, glass, pencil(wood), aluminum ruler, plastic ruler
Procedure:
1. Make sure all materials are gathered
2. Place the battery into the battery holder.
3. Place the lightbulb in the light bulb holder.
4. Connect one insulated wire to the end of an the battery holder(+).
5. Connect another insulated wire to the other end of the battery holder().
6. At one of end of the insulated wire touch the object you choose to use(+) or ().
7. Then with the other end of the insulated wire connected to the opposite battery, connect it to the metal part of the light bulb holder.
8. Record your observations to see if the light bulb lights or not.
9. Repeat steps 68 for all objects you choose to use.
Data:
Object wrench water glass pencil (wood)
Prediction (Will the light bulb light?
yes no no no
Results (Do the light bulb light?) yes no no no
aluminum ruler plastic ruler yes no yes no
Analysis
Based on your results, answer the following:
1. Which objects conducted electricity well?
The wrench because it is made of metal a good conductor of electricity.
2. Which objects did not conduct electricity well?
Water didn't conduct electricity well because electrons cannot flow through water.
3. How can you tell if an object is an insulator or a conductor based on your observations?
A conductor allowed electricity to flow in the circuit, an insulator did not. So when a conductor was in a circuit, the light bulb lit up. Insulators did not allow the light bulb to light.
4. What materials were the conductors you tested made of?
The conductors we tested were all made of metal.
5. What materials were the insulators you tested made of?
The insulators we tested were made of water, glass, wood, and plastic, which are all nonmetals.
6. Think about what is actually moving through a closed circuit. How do you think insulators and conductors are different in terms of these moving objects?
Charges are moving through a closed circuit. Insulators doesn't let negative chargers flow freely, but conductors do.
7. Write your own definition for “conductor” and “insulator”.
A conductor is a material that allows negative charges to flow freely in a circuit. An insulator is a material that does not allow negative charges to easily move in a circuit.
8. What do you think is meant by “semiconductor”?
A semiconductor allows charges to flow, but not easily.
Conclusion:
The difference between a conductor and an insulator is that a conductor lets electrons flow freely, but a insulator doesn’t. Insulator blocks the flow of electrons, the result of this is a light bulb not being able to glow. A conductor does not block the flow of electrons in a closed circuit which will result a light bulb to light up. Conductors flow through good conductors of energy known as metals which in this case a wrench or an aluminum ruler.