Class 6 Science - Chapter Light, Shadows and Reflections NCERT Solutions | Classify the objects or materials given
Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot
iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.
Opaque: A piece of rock, a CD, smoke, iron, an umbrella, a wall, a sheet of aluminium.
Transparent: Air, water, sheet of plane glass.
Translucent: A sheet of polythene, fog, a sheet of cellophone.
Luminous: A lightened fluorescent tube, flame of gas burner, a lighted torch, firefly, stove, sun, moon.
Non- luminous: A mirror, piece of rock, a wire mesh, iron, a wall.
- The objects through which lights cannot pass are called as opaque objects.
- Objects from which lights can pass easily and we can see clearly through them are called transparent objects.
- The objects from which lights can pass easily but we cannot see clearly are known as translucent objects.
- The objects which emits light are called as luminous.
- The objects which does not emit light are known as non- luminous objects.
More Questions From Class 6 Science - Chapter Light, Shadows and Reflections
- Q:-
Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?
- Q:-
In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
- Q:-
Rearrange the boxes given below to make a sentence that helps us understand opaque objects.
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(a) Which kind of garbage is not converted into compost by the redworms?
(b) Have you seen any other organism besides redworms, in your pit? If yes, try to find out their names. Draw pictures of these. - Q:-
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
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Do you find that all living beings need the same kind of food?
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Name the major nutrients in our food.
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Classify the following fibres as natural or synthetic:
nylon, wool, cotton, silk, polyester, jute - Q:-
Name five objects which can be made from wood.
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Why do we need to separate different components of a mixture? Give two examples.
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Correct the following statements and rewrite them in your notebook.
(a) Stem absorbs water and minerals from the soil.
(b) Leaves hold the plant upright.
(c) Roots conduct water to the leaves.
(d) The number of petals and sepals in a flower is always equal.
(e) If the sepals of a flower are joined together, its petals are also joined together.
(f) If the petals of a flower are joined together, then the pistil is joined to the petal. - Q:-
Fill in the blanks:
(a) Joints of the bones help in the ——————— of the body.
(b) A combination of bones and cartilages forms the _______ of the body.
(c) The bones at the elbow are joined by a ______________________ joint.
(d) The contraction of the _____________ pulls the bones during movement. - Q:-
What is a habitat?
Recently Viewed Questions of Class 6 Science
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Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt - Q:-
Given below are the names of some objects and materials:
Water, basket ball, orange, sugar, globe, apple and earthen pitcher Group them as:
(a) Round shaped and other shapes
(b) Eatables and non eatables - Q:-
State whether the following statements are true or false
(i) A cylindrical magnet has only one pole.
(ii) Artificial magnets were discovered in Greece.
(iii) Similar poles of a magnet repel each other.
(iv) Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
(v) Bar magnets always point towards North-South direction.
(vi) A compass can be used to find East-West direction at any place.
(vii) Rubber is a magnetic material. - Q:-
Find the odd one out from the following:
a) Chair, Bed, Table, Baby, Cupboard
b) Rose, Jasmine, Boat, Marigold, Lotus
c) Aluminium, Iron, Copper, Silver, Sand
d) Sugar, Salt, Sand, Copper sulphate - Q:-
Match the items given in Column A with that in Column B
Column A Column B
Milk, curd, paneer, ghee eat other animals
Spinach, cauliflower, carrot eat plants and plant products
Lions and tigers are vegetables
Herbivores are all animal products - Q:-
What is the function of a stem in a plant?
- Q:-
You are given an iron strip. How will you make it into a magnet?
- Q:-
Match the objects given below with the materials from which they could be made. Remember, an object could be made from more than one material and a
given material could be used for making many objects.Objects Materials
Book Glass
Tumbler Wood
Chair Paper
Toy Leather
Shoes Plastics - Q:-
(a)Collect different kinds of packaging material. What was the purpose for which each one was used? Discuss in groups.
(b) Give an example in which packaging could have been reduced?
(c) Write a story on how packaging increases the amount of garbage. - Q:-
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Affect observed in each case is stated in Column I. Possible reasons for the observed affects are mentioned in Column II. Match the statements given in Column I with those in Column II.
Column I Column II
Boat gets attracted towards the magnet Boat is fitted with a magnet with north pole towards its head
Boat is not affected by the magnet Boat is fitted with a magnet with south pole towards its head
Boat moves towards the magnet if north Boat has a small magnet fixed along its length
pole of the magnet is brought near its
headBoat moves away from the magnet Boat is made of magnetic material when north pole is brought near its head
Boat floats without changing its direction Boat is made up non-magnetic material
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