Reviewing Resources, Powerful Ideas about Light, Ray Diagrams and Scientific Explanations

Resource Young children's pictures of the sun with straight rays leaving in all directions.

Powerful Ideas

• Light travels outward in all directons from a light source
• Light travels in straight lines
• Light travels outward in all directions from an object we can see
• To see an object, light has to travel from the object to your eye

Scientific Explanation

• sketch the situation
• state the relevant powerful ideas
• draw careful ray diagram to represent what is happening to the light rays
• use powerful ideas to explain the phenomenon