Magnets and Magnetism

Name ______

“Light Refraction”

3rd Grade Science, Unit 2: “Light and Sound”

Materials:  A medium pencil  Water.  1 clear container per group (glass, smooth bottom from water bottle cut in half, etc.)

Procedure with pencil completely out of water:  Stand a medium pencil in an empty glass  Look at it from the side of the glass.  Then look at the pencil from above the glass.

 Lastly, draw what you see from the side of the glass (seen below)

Procedure with pencil completely in water:

 Put water in the glass so that it is half to three quarters full.  Stand the pencil in the glass so it is completely covered with the water.  Look at it from the side of the glass.  Then look at the pencil from above the glass.

 Lastly, draw what you see from the side of the glass Procedure with pencil half way in water:

 Remove some of the water from the glass so that the pencil would be half covered with the water.  Look at it from the side of the glass.  Then look at the pencil from above the glass.

 Lastly, draw what you see from the side of the glass

Describe the differences that you noticed when the pencil was half in water and half in air.

Why do you think this happened?