During a sunny day, Elara and Jovan are standing at the bottom of a hill. On top of the hill, they can see the silhouette of a flagpole with the sun directly behind it. Elara argues that since the sun is behind the pole, they should be able to observe a shadow of the flagpole coming down the hill. Jovan disagrees, believing that they won't be able to see any shadow. Who is correct and why? Provide a very brief response.
Elara is correct. Because the sun is behind the flagpole from Elara and Jovan's perspective, the light from the sun will be blocked by the flagpole, forming a shadow. This shadow will extend in the opposite direction of the light source, hence it will fall down the hill. Elara and Jovan will observe the shadow of the flagpole on the hill's surface as long as there aren't any obstructions blocking the shadow from extending downwards towards them.