Modelling shadows

This task is about looking at the lengths of shadows in relation to the position of the sun.
Set up the task as shown in the diagram below.
The torch must be kept in the same place.
 
model of the sun and the earth using a torch and globe

Question 2Change answer

a)  Turn the globe to the position where the shadow created by the "person" (blu tack) is at its shortest.
     Explain why this happens.

Question 2Change answer

b) i)  Turn the globe to the two positions where the person's shadow is the longest.
         Explain when this happens.
         
 
    ii)  At what time(s) of day do the longest shadows occur?
         

Question 2Change answer

c)  Turn the globe so that the person makes no shadow.
     Explain when this occurs.