We set up a fair experiment to test the effect of water saltiness on water density.
Predictions -
Oscar - the water is going to turn blue
Charlie - one will be lighter and one darker
Mason - one might be heavier and one might be lighter
Ella - the ice will melt slower in the salt water
Zach - the salt might rise to the top
Ashton - The salt water ice cube will melt faster
Cayley - the salt water is thicker
Kavya - the saltwater will rise
Dylan - the freshs waterwill rise and the saltwater will rise more
Edward - salt melts ice so the ice will melt quicker
Phoenix - the ice won't melt in the salt
We found the fresh water sat on the top of the salt water as it is less dense. That means as the polar ice caps melt the fresh water will sit on top of the ocean and could change the currents. Fresh water is also more acidic. A more acidic ocean will effect the sea creatures with shells.
Knowing that CO2 levels were 400ppm 4 years ago, we predictedt the Co2 level today:
Brian - 800ppm
Vihan - 900 ppm
Nicholas - 600 ppm
William - 700 ppm
Edward - 300ppm
Dylan - 480ppm
The actual level is 424.78 ppm. This means that despite knowing C02 causes climate change it is still rising.
Lastly we created posters to show the future we want to see and took action to help our native trees.
Slide Deck Showing the Future We Want to See
Next time we see Mrs Daniel we'll be reminding ourselves of the carbon cycle and exploring how it effects biodiversity. We'll also look at the possible effects of climate change, especially on our Pacific neighbours.