This afternoon in Science, the children created swinging pendulums. We were investigating whether the pendulum having a longer or shorter string would affect the number times it would swing in a certain amount of time. We found out that the pendulums with longer string could swing a greater number of times, but the pendulums with the shorter string could complete swings quicker.
In Science, Year 5 have started their new topic, energy. Today we had a quick lesson looking at springy toys. We discussed what happens when you a springy toy and why this happens. We learnt that when the toy is pressed down the strain creates elastic potential energy. Then when the rubber plates separate and the toy flies into the air the kinetic energy has been created and released.
I think the children enjoyed playing with the toys the most… take a look at some of the pictures below.
Today in science year 5 were watching a demonstration called ‘Soda Snake Firework’.
A glass bowl was filled with sand and topped with some baking soda and icing sugar mixed together. Then a bit of Propan-2-ol was drizzled on top of the mixture. After setting it alight the mixture started to caramelise and eventually what looked like a black snake emerged from the bowl.
It did take a few attempts for us to get it right, but we got there in the end!
This afternoon in science Year 5 have been investigating what happens to milk when detergent is added to it.
We started off with a bowl of milk with a few drops of different food colouring scattered around. Then we dipped a cocktail stick into some detergent before sticking it in the centre of our milk. The colours all merged today and swirled around the bowl. It was pretty amazing to watch!
We watched a clip from Harry Potter and the goblet of fire. We saw a green fire.
We wondered if it was possible….
Then Miss Edwards demonstrated a chemical reaction of methanol with Boric acid being lit.
It was amazing to see the flames in a beautiful green colour.
We thought about why it happened and what we learnt.
“I used to think that you needed to use food colouring and now I think it was an acid that made green fire because of the chemical reaction between methanol and Boric acid when it is lit with a flame.”