Upcoming SlideShare
×

# Investigating electricity part 1

550 views
469 views

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total views
550
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
6
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Investigating electricity part 1

1. 1. Investigating Electricity Part 1<br />DSVS Spring 2011<br />Eighth Grade<br />Lab 2<br />
2. 2. Lab Set Up<br />You will be using the same kit for the next two labs<br />For the first session, it is suggested you try to get through exercise 5 at least. These labs are more time consuming than they appear. <br />We will skip exercise 4, because it is the same experiment performed during the magnetism lab.<br />Don’t pay too much attention to the handouts. There is a lot of unnecessary information and supplementary activities which will use up time. <br />
3. 3. 1: Building Simple Electric Circuits<br />Have the students hook up a basic circuit.<br />Q: When you connect only one side of the bulb to the battery, does it light?<br />A: No.<br />
4. 4. 1: Building Simple Electric Circuits<br />Add another battery to the circuit.<br />Q: Is the bulb brighter when connected to one battery or two batteries?<br />A: two.<br />Q: What happens when you arrange the batteries with the + and + terminals connected?<br />A: The bulb does not light.<br />
5. 5. 1: Building Simple Electric Circuits<br />Add another bulb to the circuit. <br />Place it in series and in parallel. <br />
6. 6. 2: Circuit Diagrams<br />Teach students to read a circuit diagram. <br />
7. 7. 2: Circuit Diagrams<br />Connect a circuit with three bulbs in series.<br />Q: Unscrew one of the bulbs. What happens?<br />A: All the bulbs go out.<br />
8. 8. 2: Circuit Diagrams<br />Connect a circuit with three bulbs in parallel.<br />Q: Unscrew one of the bulbs. What happens?<br />A: The other bulbs stay on.<br />Additional circuits are suggested in the activity book. If the students are advanced, these would be good for them. If not, they aren’t necessary. <br />
9. 9. 3: Conductors and Insulators<br />Set up the simple circuit as shown. <br />Leave a space for completing the circuit with the trial substances.<br />Some substances won’t clip easily into the alligator clips, the circuit can be completed by just touching the ends. <br />Try several substances and classify them as either conductors or insulators.<br />
10. 10. 5: How to Use and Ammeter<br />Connect the circuit as shown.<br />Make sure students understand the ammeter has to be incorporated into the circuit to measure the current. <br />Q: What is Current?<br />A: the flow of charge<br />This will be very important for the next labs.<br />
11. 11. Wrapping it Up<br />Clean up<br />Answer Student Questions<br />Discuss the experiments and draw conclusions.<br />Remind students not to forget how to use an ammeter. This will be important next lab.<br />
12. 12. References<br />These activities and discussion questions are from:<br />“Investigating Electricity”<br />Hubbard Scientific Inc. Chippewa Falls, Wisconsin<br />Training slides and photos<br />Lerin Rutherford<br />