Formation of Shadows

Q.

A _________ source of light produces a sharp dark shadow of an opaque object.

Q.

How are shadows formed? List some features of shadows.

Q.

A region of total darkness is called

1. Penumbra

2. Umbra

3. Shadow

4. None of these

Q.

A dark shadow will be cast by a _________ object.

Q. Where does the sun rise?

1. North
2. East
3. South
4. West

Q.

A ______________ is formed when the path of light is obstructed by an opaque object.

Q. How does the length of shadow change from morning to evening at any place?

1. 
   First increases till noon then decreases.
2. 
   First decreases till noon then increases.
3. 
   Remains same all day.
4. 
   
   First decreases till noon then remains same.

Q. The dark region which is formed when the path of light is blocked by an opaque object is called .

1. shadow
2. reflection
3. image
4. mirage

Q. In the little village, what shows that it is Christmas time?