Archive for the ‘Physics’ Category
- Stir a cup of hot chocolate and then tap the bottom of the cup. The sound changes as you tap. Why?
- Now make a different hot drink e.g. tea or coffee or just water. Stir and tap. What difference does it make? Why?
- Now add 2 spoonfuls of sugar to one of the drinks. What difference does it make? Why?
Challenge courtesy of Miss Monk – Try it out yourself and put your answers on a postcard… or more simply just post them as a comment right here!
But first an interesting fact: Apparently if you took all of the electrons that are currently transferring data on the internet and put them together, they’d weigh the same as…
Which is amazing! But can you use that fact to calculate how many electrons are in the internet right now?
The best answer – with a full explanation of the working out and any assumptions used might just get a prize!