Inquiry-Term+1

I N Q U I R Y - L I G H T & S O U N D !


 * For our Tuning in stage we wrote down what we already know about Light and Sound and what we would like to find out. We also wrote a Lotus Chart about what we know about Light, Sound and Scientists. In the other boxes we wrote our questions that we would like to find out and how we could find the answer to it.

For our finding out stage we had to match the name of the job they did to the description. My group was the Scientist group. After that we did a oral Presentation explaining what we did and what we learnt. For example we had to match Predicting, Observing and all the different strategies scientists use, and match them to their description.

Right now for our Inquiry, we are working on our action which we are doing for our Expo. For my Expo I’m presenting about the eye and how it works and the parts in our eye. Also after I present my work I’m going to do a quiz to see if people were listening to my presentation and also that they learn something new about the eye. It took me about a week to prepare my presentation and work on it. Our audience is the ¾’s.

Learning about Light and Sound has been really interesting for me because I’ve learnt lots and now I understand. What I’ve learnt is that there are seven parts in the eye which are the Iris, Cornea, Sclera, Optic nerve, Pupil, Lens, and the Retina.

These are how the parts work:

Sclera: The Sclera is the white of the eye. The strong outer coating. Six tiny muscles are connected to it, which control our eye’s movement.

Cornea: The Cornea is the coating which covers the Iris and the Pupil at the front of our eye. The Cornea, together with the lens, refracts-that changes the direction of the light and helps the eye to focus.

Iris: The Iris is the coloured part of the eye. Tiny muscles inside the iris control the amount of light which can enter the eye by opening and closing the hole in the centre of our eye. The hole is called the Pupil. Look in the mirror in dim light-how big are your pupils? Now turn the light on-did you notice your pupils get smaller?

Pupil: Light enters the eye through the pupil-the black hole in the centre of the eye. The size of the pupil is controlled by the Iris. When it is very bright and there is a lot of light, the pupil grows bigger to allow more light into the eye.

Lens: The purpose of the lens is to focus light onto the Retina at the back of the eye. Because the lens refracts the light, the image which hits the Retina is upside down! **

**Retina: The Retina contains millions of photoreceptors that sensors which convert light into electric impulses which are sent along the optic nerve to the brain. There are two types of photoreceptors: Rods which allow us to see in low light, and cones which allow us to see colour and work best in brighter light.**


 * Optic nerve: The Optic nerve sends signals representing colours, light and dark, from the eye to the brain, which then interprets what we see. Where the Optic nerve leaves the Retina there are no sensory receptor cells, meaning we have and blind spot in our eye! **

 Learning- **The shape that I think represents me is a circle, because I always like to go back and see if I can learn more than one thing of what I’ve done!**