BFSU SUNDAYS

 

 

This Sunday we studied Lesson D1 - Gravity in BFSU.  The three topics we discussed were The concept of Gravity, Horizontal and Vertical and gravity - the orbits of heavenly bodies and satellites. 

 

To explain horizontal and vertical we made a plumb bob for the vertical and used a spirit level for the horizontal. 

 

 

Princess Perfects' teddy got a free ride around the room to illustrate the orbiting of heavenly bodies and satellites in relation to gravity and centrifugal force, which apparently the boys knew loads about from watching a backyard science episode.

 

 

We finished off with a page from The science and history project book.  Todays experiment was What is humidity?

 

Dad made an awesome hygrometer to measure humidity.  We sprayed the paper towel with a spray bottle filled with water and the "needle" flew into the air!

 

 

 

To experience and discuss transpiration we tied a plastic sleeve around a plant.

 

It didn't work too well as our cat decided to investigate and knocked the sleeve off whilst we were inside working on the hygrometer!