Page 161 - Science Class 06

B. Fill in the blanks.
1. Spectacles are made up of ___________ materials.
2. ___________ materials do not allow light to pass through them.
3. Light always travels in a ___________ line.

4. The colour of a shadow is always ___________ .
5. The objects which cause reflec on of light are called ___________ materials.
6. We can classify the reflec on of various objects into ___________ reflec on and
___________ reflec on.
C. Match the following columns.
Column I Column II
1. Luminous body a. black patch
2. Transparent material b. illusion of an object
3. Shadow c. book
4. Image d. star
5. Irregular reflec on e. binoculars
D. Very short answer ques ons.
1. What is light?
2. Give two examples of ar ficial sources of light.
3. What do you mean by translucent materials?
4. What is a beam of light?
5. Define incident ray.
6. What is reflec on of light?
E. Short answer ques ons.
1. Dis nguish between transparent and opaque materials.
2. Write the uses of transparent materials.
3. Write the condi on for shadow forma on.
4. Why do not transparent materials cast their shadow?
5. How is an image formed?
6. Differen ate between regular reflec on and irregular reflec on.
7. Show by an experiment that light travels in a straight line.

F. Long answer ques ons.
1. Describe light. Also, differen ate between the luminous and non-luminous object.
2. Explain the uses of transparent, translucent and opaque objects with their defini ons.
3. Explain the forma on of shadow.
4. Elaborate the forma on of a shadow.
5. Draw a diagram to show the solar eclipse. Mark the areas of total solar eclipse and par al
solar eclipse.

Project
Project ActivityActivityActivity
Project
Project Activity
A. Make a room dark. Place a torch on a table and switch it on. Now, take different types of
objects before it and observe the shadow formed on the wall. Write your observa ons on a
paper and show it to your teacher.

B. Make a model of telescope with the help of your teacher.

Science-6 161