Kia ora everyone welcome back to my blog!
Every week on Tuesday we have been doing science workshops, our main focus has been electricity. We learnt about the two types of energy, can you guess what they are?………….. Renewable and non-renewable. Renewable energy is a type of energy that can be restored simultaneously, some examples are wind power, geothermal energy and hydroelectric power. Whereas non-renewable energy is a type of energy that will run out and not be here forever, for example, fossil fuel, coal & oil.
Today for our science workshop we looked at the question, “Can we get a buzzer to work?”. My hypothesis was that when we put the nails in the water, connect the buzzer and add salt, the buzzer would start beeping. But I learnt that there were other steps that I had to take into consideration, such as how if you put the same nails in the water, the buzzer won’t work. We also learnt about how when you add salt into the water it separates and changes into sodium ions and chloride ions, the two ions flow through the water and conduct electricity to make the buzzer beep continuously.
My hypothesis was incorrect because I did not put the correct nails into the water.
The materials that we used were:
(T) beaker
(S) beaker
Specimen jar
Two zinc nails
Two Copper nails
3/4 water for an empty jar
Salt
Buzzer ( with clips )
Reflection:
Something I found interesting during this workshop was learning about how when salt is put into water it separates into chloride & sodium ions. If I was to do this experiment again or something similar I now know that I need to use two nails that are different materials.
Question:
Have you ever done an experiment like this before?