Believe it or not milk and cream are emulsions. It is possible for tiny particles of two substances that seem unable to mix to suspend in around each other. So the link above shows us how to make an emulsion but this experiment shows us how to split up an emulsion. It is both interesting scientifically but also very useful to make a very yummy food - butter.
Discover and understand the different layers of soil and why they are important using Lego!
Each layer of soil is important.
Soil is formed over a long period of time for a number of reasons. It can take up to 1000 years for just a few centimetres of soil to form. Over the time that soil is formed, factors that help soil to form which are:
Living Organisms like plants, fungi, animals and bacteria