The Seasons
Direct vs. Indirect light.

Directions:
Part I: Direct light
-Take a separate sheet of paper on which to draw.
-Hold a flashlight 6 inches above the paper.
-Outline the circumference of the circle of light.
-Calculate the area on which the light fell.

Part II: Indirect light
-Take another sheet of paper on which to draw.
-Hold a flashlight at a 45 degree angle 6 inches from the place where the center of the beam of light strikes the paper.
-Outline the circumference of the circle of light.
-Calculate the area on which the light fell.

Data:
Area in which the direct light fell:   ______________

Area in which the indirect light fell:  ______________

Discussion:
Did you vary the intensity of the light source?
 

Did you vary the distance of the light source from the paper?
 

In which trial did you find more diffuse light?  Why?
 
 

What did this activity demonstrate?
 
 
 
 
 

Diagram the relationship between the Earth and Sun and the light given off during...

...our (the Northern Hemisphere’s) winter.
 
 
 
 
 

...our summer
 
 
 

What is the winter solstice?  Why does it occur?
 
 
 

What is the summer solstice?  Why does it occur?
 
 
 
 

What are the two equinoxes?  Why are there two?
 
 


Copyright Alexplorer. Some items taken from or adapted from other materials. This page is free for use in a classroom setting.
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