My career before a break for children was a Microbiologist. I loved science. I still love science, I just don’t do it everyday anymore (or get paid for it!) I like to get my children involved in science at home, particularly my big interest Biology. The Fun Science blog posts will all be easy experiments that I have done with my children. They are super-simple, won’t need any specialist equipment and can help develop an interest in science before they start learning it in school. If you like what you read; Google; find more experiments that you like, and do more. While science is hard sometimes, it should always be fun.
What you will need:
A glass of water for each colour you are using
Food colouring (whatever you happen to have)
Chop your celery into small pieces (about 10cm) but can be any size you want.
Mix a couple of drops of your food colouring into each glass of water and mix thoroughly.
Put one piece of celery into each glass of coloured water.
Leave the celery in the coloured water overnight or for a few days.
What has happened to the celery? You may need to peel the outside part away to see the colour better.
Get your child to explain what has happened. They might not understand what has happened but they will have noticed the colour change.
You can measure the distance the colour has been sucked up into the celery if you like.
Want something a little more challenging? Get your child to look at what happens after one day, two days, three days. Whatever time intervals suit you. Get them to measure the distance the colour has travelled each time.
Plants need water like we do. Plants pull water from the environment around them using their roots. The plant uses a network of capillaries to transport the water around the plant. By adding the food colouring to the water you can see how the celery pulls the water up from the glass and how far it travels over time. I used celery without leaves and it took about three days to reach the top. Keep the leaves and it might be quicker.