Summer Solstice

 #SummerSolstice Explaining the angle of the Earth and the journey around the sun to create the solstice Longest/shortest day using a ball and a torch. Holding the @esri "Earth" the students got the idea of what is going on.

Going Green Podcast #5 Lithium Power

 

Lithium is our way out for power. Lithium Batteries are made from Lithium Carbonate and there are huge deposits in Cornwall and Scotland. The Cornish reserves give us 260mg per litre flowing at a rate of 40-60 litres per second. But we know that mining is environmentally costly. The World's highest grade Lithium in Geothermal waters gives us a low environmental footprint that's enough for a phone battery every few seconds

The Demand is soaring for batteries for renewables. At the moment most of the Lithium comes from Australia, Chile and Argentina but is expensive and unfriendly to extract and uses loads of water, Cornwall may save the World. To give some idea of the amounts needed for cars the Tesla uses 12kg of Lithium per car and we know that the demand is increasing exponentially.

Clean Air Day

 #CleanAirDay2021 Out with some of my students measuring the Air Pollution in and around my house. Using The PocketLab Air to measure the Air Quality

Going Green Podcast #4 : messy methane

Charles Law

 

#Physics Charles Law done properly with a Bourdon Gauge to measure the pressure going up from 1 x10^5 Pascals to 1.3x10^5 Pascals As the temps rises so does the pressure #iteachphysics

Dye spurting out from a manometer

 

#Physics Charles Law a 500ml Flash and a manometer and a kettle of hot water just a little bit and ... enjoy #iteachphysics

Concentration

 #chemistry Looking at concentration. Copper Sulfate works well giving a visible indication of the concentration and so does orange squash ( and the students can drink that to check the concentration). #chemtwitter #STEMeducation