Oct. 19- 23

On Monday we started the new unit. It has to do with movement. We made some little tube kind of things out of paper and had to look at a ball through it. We knew when the ball was moving because we had to change the orientation of the tube, and because the ball would appear to et bigger or smaller. If we don't have to change the orientation of the tube to see the object, we don't see it as moving. An unmoving observer who was still would see a still object as unmoving. A moving observer might see a moving object as unmoving, but they would have to be moving in the same direction at the same speed. Different observers see motion differently. This is important because we are always seeing objects move or not move.

On Tuesday, we dissected cow eyes. The outsides were covered in skin and fat, and they were really hard to cut. First, we had to cut the cornea so that the realy disgusting liquids inside the eye could come out. Then we had the cut the cornea out of the eye. After that we cut the eye in half. The lens came out of the eye, and it felt really hard like a marble. This i important because now we know some of the parts of the eye, and we also know that cow eyes are disgusting and hard to cut open.

When there is movement, time has to pass. That is why we cannot tell in pictures if something is moving. We should specify direction when e are talking about motion. Our lefts and rights can be different from someone else's depending on which direction we are facing, but North, South, East, and West are the same for everyone. This is important because people can see the direction of motion differently.