Sorting Materials into Groups Class 6 Chapter 4 Science Notes In English | Class 6 sorting materials into groups notes worksheet In English |
Class 6 Science Chapter 4 Question 1 Name any five objects which can be made from wood.
iii. Stool
iv. Table
v. Door
Class 6 Science Chapter 4 Question 2 Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt.
Answer: Objects that shine are - Steel spoon, glass bowl.
Class 6 Science Chapter 4 Question 3 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.
Class 6 Science Chapter 4 Answer:
Tumbler - Glass, wood, plastic
Chair - Wood, plastic
Toy - Glass, wood, paper,
Shoes - Leather, plastic
Class 6 Science Chapter 4 Question 4 State whether the statements given below are True or False:
ii. A notebook has luster while eraser does not.
iii. Chalk dissolves in water.
iv. A piece of wood floats in water.
v. Sugar does not dissolve in water.
vi. Oil mixes with water.
vii. Sand settles down in water.
viii. Vinegar dissolves in water.
(i) False, glass is a transparent because it allows light to pass through it, while stone is opaque object because it does not allow light to pass through it.
(ii) False, Notebook and eraser do not have any luster as they are not metals.
(iii) False, Chalk does not dissolve in water because it is insoluble in water.
(iv) True,a piece of wood floats on water because the density of wood is lesser than that of water.
(v) False, Sugar is soluble in water.
(vi) False, Oil does not dissolve in water. It makes a separate layer on water.
(vii) True, Sand settles down in water as it is heavier than water.
(viii) True, Vinegar is soluble in water.
Class 6 Science Chapter 4 Question 5 Given below are the names of some objects and materials: Water, basketball, orange, sugar, globe, apple and earthen pitcher. Group them as:
b. Eatable and non-eatables.
Other Shapes: Apple
b. Eatables: Water, Orange, Sugar, Apple
Non-eatables: Basketball, Globe, Earthen pitcher
Class 6 Science Chapter 4 Question 6 List all items known to you that float on water. Check and see if they will float on oil or kerosene.
ii. Matchstick
iii. Feather
iv. Paper boat
v. Balloon
vi. Hair
vii. Thermocol piece
viii. Cane
ix. Paper boat
x. Wood
They also float on oil or kerosene.
Class 6 Science Chapter 4 Question 7 Find the odd one out from the following:
a. Chair, Bed, Table, Baby, Cupboard.b. Rose, Jasmine, Boat, Marigold, Lotus.
c. Aluminum, Iron, Copper, Silver, Sand.
d. Sugar, Salt, Sand, Copper sulphate.
Class 6 Science Chapter 4 Answer:
a. Baby (Except this all others are non-living things).
b. Boat (Except this all others are flower).
c. Sand (Except this all others are metals).
d. Sand (Except this all others are soluble in water).
Very Short types Questions Answers
Why do we need to group materials give one reason?
Answer: We often group materials for our convenience it has to describe their properties.
Suggest two bases on which we can group objects ?
Answer: I) material used in making the object e.g wood or metal / plastic
ii) material of the object is soft or hard or substance is soluble or insoluble in water.
Is a substance which can be compressed soft or hard?
Answer: Soft
Select a lustrous material out of the following substances ?
Answer: Aluminium
Which material is generally used for making pens wood, aluminium, plastic, cotton?
Answer: plastic or metal.
Is oil soluble in water ?
Answer: all does not dissolve in water so it is insoluble in water but floats on the surface of water.
Name two objects which are made from opaque materials?
Answer: wooden doors backboard/steel plate.
What is the common between salt and sand?
Answer: both have mass and are in solid state.
List three liquids which are transparent?
Answer: water alcohol and Acetone/benzene
Right to substances which are made from leather?
Answer: Belt and Shoes
Short type Question Answer
Write any four properties of materials ?
Answer: appearance, hardness, solubility, float or sink in water, transparency.
Why is a tumbler not made with a piece of clothes ?
Answer: we use Tumblers for made of glass plastic and metal to keep a liquid, These substance can hold a liquid.
a tumbler made up cloth cannot hold a liquid because:-
clothes piece is not hard enough to hold liquids and cloth piece has very minute pores through which the liquid oozes out.
What are the similarities between, iron copper and Aluminium ?
Answer: they all have luster, they are all metals, they are hard.
Mention some materials which are made up of paper ?
Answer: books, notebooks, newspapers, toys calendars etc.
Why is water important for our body ?
Answer: water can dissolve a large number of substance so it is needed by the body it is also measure part of our body cells.
What is the basis for sorting materials ?
Answer: materials are grouped on the basis of similar days and the similarities in their properties.
What is the reason for grouping materials ?
Answer: materials are grouped for our convenience to study their properties and also observe any patterns in these properties.
Metal have luster shine give reason why some metal articles become dull and lose their shine ?
Answer: metals when exposed to air react with moisture and gases present in it there by farming a dull layer of some other compound on it.
Long Answer Type Extra Question Answer in English
" Grouping of objects helps the shopkeeper " justify the statement.
Answer: proper grouping of objects helps shopkeeper in following ways:
1) He can locate the required object easily and quickly.
2) He can easily come to know what stocks are going to finish and he should purchase them for his customers.
Describe an experiment to prove that water is transparent.
Answer: take a bikar half field with clean water and put a coin in a beaker of water.
place the beaker undisturbed for a few minutes where enough light is present. Now observe the coin immersed in water from the top of the beaker. Are you able to see the coin ? you can clearly see the coin immersed in water. This proves that water is a transparent liquid.
Write an experiment to show that our palm is translucent.
Answer: cover the glass of a torch with your palm at a dark place, switch on the torch and observe from the other side of form we see that the light of the torch passes through the palm but not clearly. This experiment shows that our palm becomes translucent when a strong beam of light passes through it.
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