Light and shadows
Light and shadows
Learning objectives
To show what already know about topic of light
To understand that shadows form when light is blocked
To understand that the shape of a shadow depends on the object that it is a shadow of
Name as many sources of light as you can
What is a shadow?
Shadow size
The larger the distance between the object and the light, the smaller the shadow.
The smaller the distance, the larger the shadow.
The distance between the object and light affects shadow size.
Absolutely agree, it's a crucial factor.
Disagree, shape matters more than distance.
Neutral, both distance and shape are important.
Only partially agree, light intensity plays role.
Opaque objects are essential for shadow formation.
Absolutely agree, they block all light.
Disagree, translucent objects can also help.
Neutral, shadows exist with various objects.
Only partially agree, need light source too.
What is true about shadow details?
Shadows are 3D
Shadows do not have details
Shadows vary in detail
Shadows show color
How does distance affect shadow size?
Distance has no effect
Closer objects create smaller shadows
Closer objects create larger shadows
Larger distance creates larger shadows
What forms a shadow?
A translucent object
A light bulb
An opaque object blocks light
A transparent object
What type of object blocks all light?
Shadows
Transparent objects
Opaque objects
Translucent objects
Activity
Draw lines to match the shadows on the left with the correct pictures on the right
Activity
Place an object on a piece of plain paper. Shine a torch onto the object from a distance.
Draw around the shadow of the object. Then move the torch closer and draw around the shadow again.
What has happened to the shadow as the light got closer?