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A shadow forms when light is blocked. Consider a light source, an object that might or might not cast a shadow, and a surface on which the shadow might or might not be cast. In order to cast a shadow, the object must block ALL light from the source reaching the surface. Now, the sun is not a pinpoint source of light, but a massive body, about 1.4 billion meters in diameter. And every point on the surface of the sun that is facing us is casting light in our direction. That object, in this case the bird, must block all of that light from reaching some area on the surface in order to cast a shadow. The higher a bird flies, the smaller area it can block sunlight from reaching. When this area reaches zero, no shadow is cast. Think of it this way. In order for an object to cast a shadow, it must "appear", from the surface, to be larger than the light source. It's apparent size must be sufficient to completely hide the light source if placed in front of it (between the light source and a point on the surface). The higher the object is, the smaller it appears to be. It is easy to see that, at say 50 feet, all but the largest birds would not appear big enough to block out the sun, and would therefore cast no shadow.
What else can I help you with?
i see what you cant see what am i?
A flying predator drone.
Why the shadow of flying bird is not seen on the ground even though it is opaque?
If you see a bird but do not see a shadow on the ground, it is probably because of the angle the light is coming from. If you drew an imaginary line form the source of light, (probably the sun) through the bird, you would find the shadow of the bird where the line touched the ground. If there is no light, the bird cannot make a shadow.
Why the shadow of a flying bird not seen in the earth?
The shadow of a flying bird may not be seen on the ground because the bird is often higher in the sky than the angle at which the sun's rays hit the ground, resulting in the shadow being cast above where we can see it from the ground. Additionally, the bird's movement and the speed of the sun may also contribute to the shadow not being visible to us.
What role do the eyes of a bird have when the bird is flying?
They enable it to see.
What time is it when you cant see your shadow?
Night time.
Why do birds not cast their shadows while flying high in the sky?
Birds flying up in the sky do not cast their shadow because the source of light (sun) is too large compared to the object (bird) and the umbra of the shadow formed on the screen (ground) is very small, negligible.So it is tough to see its shadow on the ground. (P.S. If this is a VNS student reading this for Physics research, then I'm pretty sure you're in my grade and you know who I am)
What are beetles flying in my yard?
show a pic we cant see
WHY CANT WE SEE OUR SHADOW CLEARLY AT NIGHT?
because pittu is a bright student
Why cant a groundhoug see its shadow?
Because it is usually cloudy when the groundhoug emerges from its burrow.
Why do you never see an airplane's shadow?
If you're standing on the ground, then the plane's shadow is too small,and it moves too fast.Hint: The shadow is on you only when you see the plane fly across the sun.It's much easier to see the shadow when you're in the plane.
Why cant we see all the stars in the galaxy?
Because of the observation shadow of the galactic centre. See related for a pictorial representation
How are observations and inferences similar and different?
Observations are what you see (i.e. i saw a bird flying today), and inferences are reasonable conclusions based upon what you know (i.e. the bird was flying to get food for its young). Both of these are methods of finding information.
