This blog post is working progress – please be sure to check back later, too 🙂
We participated in an excellent “Scientist in Schools” hands on workshop today. The activities complemented our work in electricity so far
- we have built circuits with SnapCircuits from HWDSB Kit services; we have drawn our own “crude” circuit diagrams
- we have leaned about atoms & the flow of electrons/electricity
- we have experimented with balloons and static electricity
- We have learned about hydroelectricity (eg generating station downriver from Niagara Falls or river with dam, metal turbines (rotate around huge magnet), electrons flow and are directed through wires/power lines leaving the generating station)
Laser printers and photocopiers use static electricity (followed by heat) to apply ink/toner to paper!! Can you explain this to your parents??
BATTERIES: Making electricity with a chemical reaction
- 3 kinds of metal
- Electrolyte (fluid) – we will use salt water as our electrolyte
Build a voltaic pile:
- Bottom: metal (aluminum)
- Middle: cardboard square soaked with electrolyte (salt water)
- Top: metal (copper — a penny that is older than 1993)
We will measure the resulting electric charge with a volt meter
Usin an aluminum tin &salt to power a dollar store calculator!