The dropping pins experiment.
Aim: To observe conduction along a metal rod.
Equipment: A metal rod, retort stand and clamp, Bunsen burner, Petroleum jelly, 5-10 drawing pins and a stop watch.
Method:
1. Set up and light a Bunsen burner.
2. Smear small amount of petroleum jelly on to the head of each drawing pin.
3. Attach the drawing pins at even intervals along the length of the metal rod.
4. Clamp one end of the metal rod to a retort stand.
5. Position the retort stand so the unclamped end of the metal rod is in the Bunsen flame and start the stopwatch.
6. Record the time it takes for each pin to drop in the table below.
Our results on what happened:
1: 34 secs
2: 5 mins 24 seconds
3: 14 min 40 seconds
4: 19 min 30 seconds
5: 20 min 40 seconds
No comments:
Post a Comment
To support my learning I ask you to comment as follows:
1. Something positive - something you like about what I have shared.
2. Thoughtful - A sentence to let us know you actually read/watched or listened to what I had to say
3. Something thoughtful - how have you connected with my learning? Give me some ideas for next time or ask me a question.
Note: only a member of this blog may post a comment.