The shadow is the place where the light doesn't go. So it doesn't matter what color
the light is where it does go, and the shadow is usually described as "black".
The shadow is formed exactly below the object. So it cannot be seen.
Changes in shadow tell us where the source of light is. If you are outside, you only have one shadow because the sun is casting it. But if you have multiple shadows, then there are multiple sources of light to cast the shadows.
No change will occur because shadow is a dark outline of an object, irrespective of the colour of the object or the colour of the light.
Transparent objects becasue light passes through them. And it wont make a shadow
Light travels in straight lines. When the light hits the object it is stopped but the light at the edges continues to travel in a straight line so there is a shadow.The shadow is not black because another property of light. It can be reflected . When it hits an object some light is reflected. If the object is not perfectly smooth the light is scattered when it reflects.Light is reflected more from light colored objects than darker objects. So in a well lit area where there are plenty of surfaces the shadow will be less dark.A further property of light is that it will slightly bend around the corners of sharp objects. So if you look carefully you will see that the edges of a shadow are sometimes blurred. Usually this property is observed in the physics lab.Blurred edges of a shadow are more likely to occur from multiple light sources making a superimposed shadow.
black
I would say copper
The shadow is formed exactly below the object. So it cannot be seen.
A shadow is caused by an object blocking light so that it doesn't reach a surface. The area in shadow appears black because there is no light falling on it -- it appears dark. In fact, most shadows aren't totally black, because light usually bounces around the obstruction off other objects (indirect lighting). You can also get coloured shadows where there are multiple light sources of different colours. e.g. in a nightclub or disco. Translucent objects may cast coloured shadows, e.g. stained glass in a church, where only some of the light has been blocked by the window. Outside on a sunny day, shadows may appear black because your eyes have compensated for the bright light and can't make out the detail. But if you walk into the shadow your eyes will adjust to the light, and you'll see that the shadow isn't black at all, it's just darker than in the direct sunlight. On a bright day with a blue sky, you may also see that areas in shadow (especially white objects in shadow) appear to have a blue tint. This is because although the shadow is not directly lit by the sun, it is lit indirectly by the blue sky above. It may not be very obvious, because your eyes and brain are adept at adjusting to changes in brightness and colour, but a camera will see it clearly. If you take a picture in shadow on a sunny day it comes out looking quite cold and blue. This is why many cameras have a 'shade' mode that alters the colours to remove the blue colour cast. To make your own coloured shadows, try experimenting with two or more torches with different coloured plastic over the bulbs. Place objects on a piece of white A4 paper (in a dark room), and move the torches around and note the effects. An example of a coloured shadow can be seen here: http://www.flickr.com/photos/sevennine/442923580/
A shadow is formed when light is blocked by an object.
It does not.
No, in my opinion.
Transparent objects cast sharp and well-defined shadows. Translucent objects cast softer shadows with blurred edges. Opaque objects cast solid and dark shadows with clear outlines.
when a shadow is formed there should be an opaque object the picture can be formed on the screen.
the angle at which a shadow is formed
The name given to objects that do not cast a shadow in the presence of light is called translucent. Translucent objects allow light to pass through them, making them appear to have no shadow.
Black and red.