Friday 11 March 2022
Flying Cake tins
A demonstration of Electrostatic charges repelling like charges caused by a Van de Graaff Generator. This causes the aluminium cake tins to fly away from each other and from the van de Graaff generator.
Ionic Bonds
Ionic bonds with dot and cross diagrams are hard to visualise. Using these card models made with a Scan n cut machine, the students seem to grasp the idea better. The real problem is to sort out a better Sulfate and Nitrate groups.
Thursday 10 March 2022
Lego EV3 to determine acceleration due to gravity
We have been using this Lego technics setup to determine the acceleration due to gravity and getting 9.8 m/s/s consistently. The students had to do the programming themselves from the formula which made it a bit harder.
Gas Stoves leak Methane when not in use
It’s
widely known that when methane is transported in pipes and it leaks the new
study has found that cookers leak methane even when they’re not being used. But
it is a worry because methane is 86 times more potent than carbon dioxide.
Methane makes up about 90% of natural gas which is used in our homes for
heating and cooking purposes. This recent study shows that even when heaters
and cookers are turned off methane leaks. Considering the amount of time a
cooker is used we can see that more than 75% of this leakage occurs when the
cooker is turned off. Ventilation can help the kitchen but it doesn’t help the
climate impacts of this Greenhouse gas and the results of burning methane. The only
way to do this is to cook on electric from a renewable source.
Wednesday 9 March 2022
Projectiles
Tuesday 8 March 2022
Using the Ultrasonic sensor to get displacement and velocity Time graphs
Using the Pasco wireless motion sensor the students acted as a human trolley walking away from the sensor stopping and then returning. Then before we looked at the velocity time graph they had to draw what the graph would look like.
Monday 7 March 2022
Centre of Mass
Looking at a broom to find the centre of mass. Its a simple trick to do. Hold out the broom horizontally balanced on two fingers. Move the hands together slowly and often you find one hand moves and the other doesn't when the hands meet - that'
s the centre of mass.
We find the centre of mass to help balance things like getting a picture straight on a wall and we use this idea of centre of mass to stop things blowing over because they are "top heavy".
Revision for Chemistry 1 done
All the Chemistry Revision for Paper 1 is now done. All the required practicals have been gone over, and lots of past papers have been pra...
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Negative feedback is a difficult concept to try and get over so I tried using a balance board and the @pascoscientific smart cart strapped...
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Getting a classic set of results for the titration of NaOH and HCl is not that difficult but it is nice when we can get students to this ...
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Mechanics: the grand meeting of Maths & Physics! Using strobe light & a ball drop for gravity-acceleration calculations and SUVAT fo...