Physical quantities and units

In this lesson I learnt about SI uints .I learnt about Si units of length, mass, time, and temperature.This lesson felt more like maths lesson than a science lesson as we learnt about conversion of SI units and prefixes.On another lesson, I learnt about use of measuring instrument. I learnt that a common mistake is the parallax error which is the wrong positioning of the eyes when we are reading a measurement. We measurement different things with a meter rule, vernier calipers and a micrometer screw gauge. I found out that the instrument with the most accurate reading is the screw gauge.

Flames

In this lesson, I learnt about different types of flames and their properties.I learnt that there are 2 types of flames- luminous and non-luminuos flame. Luminous flames are produced when air- holes are closed,there are insufficient air so the gas does not burn completely.The non-luminous flameare produced when air-holes are open, so there is enough air for the gas to burn completely. I also learnt that when there is too much air entering the air-hole, it will cause a strike back.

first blog

Hi this is my first blog in my own blog.I will be talking about the things we learn in science.Tje science home learning was quite tough for me as i dont really noe a lot about density.Later i checked on internet about density then i found out that density had something to do with Archimedes' s famous quote,"Eureka!Eureka!".


Here is how the story goes.The king suspected that his crown was not pure gold so he wanted archimedes to find out a solution to find out if his crown was pure gold.Archimedes thought about it when he was bathing and he observed that as he is submerged in the water the water overflowed and that was archimedes found out the solution. He was so excited that he ran on the streets naked shouting"Eureka!Eureka!".

The solution was something like that cuz i may have forgot some parts.He decided to submerge a crown made of pure gold and the king's real crown and if the king's crown was a fake the amount of water that overflow will be less that that of the crown made of pure gold.