Thanksgiving Friday Challenge

What makes leaves turn colour in the fall?    Have you ever wondered why some turn yellow?  Some red?  Some orange?  Do some research to find out what causes this and put your answer in the comment section. Please include the website you used in your answer. Hint!  Look in the 2learn.ca website Science section for help!

Talking Trees

In the next little while we will be investigating what trees can us about their life history. We will be investigating tree cookies but first we needed to polish them down so we could see the story!  It was hard work!  But these are strong little arms. We made a huge sawdust mess too. It was great :)

Transpiration Experimentation

One week ago we began investigating if transpiration really exists. We bagged leaves on tree to try and capture the water that evaporates directly from the leaves. We had lots of questions to investigate. Do needles transpire or just leaves?  Do fall leaves stop transpiring because they are in winter shut down?  How long before we notice results?  Well here is what we saw today.....

We are going to check them again Monday to see if there are further results. We are also wondering if we should run this experiment again in the winter with the needle bags. Do coniferous trees transpire all year long?  Do they transpired as much in winter or do they conserve water???  Oh the questions we have.....