1. Travelling Light

2. Travelling Light Starter:
Draw the path the light ray takes to enable the eye to see the book.
Light from the lamp strikes the book.
Some of the light is reflected into our eye.

3. Travelling Light How do we know? The facts:
Light travels in a straight line
Light travels at m/s
Light travels faster than sound (340 m/s)
-1 million times faster!
How do we know?

4. Travelling Light Write down what you think the following words mean:
Transparent
Opaque
Translucent
Reflect
Absorb
Polychromatic

5. Name some uses of light

6. Uses of light

7. Investigating Shadows
Practical:
Plan an investigation to find the relationship between the distance and shadow size.
Write a plan for your investigation. Include:
Prediction with scientific reason
Equipment list & labelled diagram
Procedure & variables
Safety!!
Record your results in a suitable table
Conclusion

8. Vision We use our eyes to gather information about the world
But ‘seeing’ is really done in our brains, where the picture is put together.
If our brain can’t make sense of what it sees, it starts making things up...

12. Do you see an old or a young lady?