Friday, 19 October 2012

Water, water everywhere...

In science, we have been talking about water and its importance to life on Earth. Today we learned about how water can be a gas, liquid or solid, and how it can change between being liquid, gas and solid. We did an experiment with ice cubes, water and salt. Below are some pictures of our experiment:

In the first glass, we had ice cubes and a thermometre. We wrote or drew what we thought would happen to the ice cubes and what the thermometre would look like before and after it was in with the ice cubes.

In the second glass we had ice cubes and water and a thermometre. We wrote or drew what we thought would happen.


 
In the third glass we had ice cubes and salt and the thermometre. We wrote or drew what we thought would happen.
 
Today we learned that there is water in the air around us, and that when it gets cold, it turns into liquid water or solid water, which is why our cold glasses got wet on the outside and why the glass with salt got frost on the outside. We also learned that when ice gets put in a warm place (like our classroom) that it melts into liquid water.