Journey to the centre of the earth

We are learning how to think like scientists by observing our world around us while looking at what it means to be a scientist and explaining what we see and learn.

Following the exciting skype, a scientist experience Room 9 was filled with wonderings regarding our earth. Creating an exploration into what our earth is made of and how scientist know. We learnt about the soil under every continent is different. Leading to the wonderings if every continent has a difference below the surface. Nature of science students will appreciate that scientists ask questions about our world that lead to investigations and that open-mindedness is important because there may be more than one explanation.

We recorded what we knew what we wanted to know and what we learnt on our whiteboard. This produced a variety of different thoughts into what makes the earth different on top.

Chelsea: The different countries have different because some have volcanoes and some don’t.

Ashe: The earth is filled with lava and is all the same in the centre.

Jeremy: The earth is made of many different layers all are the same.

Piper: The weather and the closeness to the sun affect the topsoil of the earth.

We then created 3d models using red, yellow, and orange modelling clay, to demonstrate the different layers that make up the earth. This involved the children in pairs following the instructions step by step. The children are having great success at following and explaining their findings in the sequential order. The model of the earth marking was exciting for the children as they were making the models without knowing what was going to happen in the end.


center of the earth auckland museum




creating the earth's crust



creating the earth




creating the earth crust



creating the earth inner core


creating the earth split

Vincent: The pieces aren’t all the same size they got thinner as we made our way out from the core.

Clare: The core is hot magma and is too hot for anyone to go near.

Jeremy: The earth has 4 layers and the crust is our dirt and rock layer, it is very thin.

Once we cut it in half using string the different layers made sense we could see the different layers as well as how thick they are when looking at the whole earth. Finding out that the crust is only thin surprised the children as we know you can dig quite a way down and still see dirt. This realisation helped make the connections to how huge the earth is, and that you can’t actually dig to China as a few children were adamant you could.

Jack: I can see all the layers once we cut it.

Casey. The layers are all different colours.

Carney: Look we have the core, the inner layer, the outer layer and the crust.

Looking into how scientists would know that the earth is made of the core the inner layer and outer layer was a very hot topic because as we know that lava/magma is molten rock thanks to Jeremy’s extra amazing interests. So scientists couldn’t just dig down and find out what it is like beneath the crust. “ So how do they know? Room 9 discovered they don’t actually know 100 percent they use their best understands and guesses today and hypothesis that their readings and measuring seismic waves provide them with data on the makeup of the matter below our crust. They also use their knowledge of gravitational and magnetic forces and how they affections. So we may not know for 100 percent but they can prove their hypothesis and prove evidence and explanations that are widely accepted and therefore we can trust that their hypotheses are proved and scientifically proven.

Keywords: passion projects, inquiry,  science, exploration, English

creating the earth crust 4