2021-22 GRADE 6 SCIENCE CH- GROUPING MATERIALS (NOTEBOOK AND WORKBOOK EXERCISE)
SCIENCE CH- GROUPING MATERIALS (NOTEBOOK AND WORKBOOK EXERCISE)
SCIENCE NOTEBOOK FORMAT VIDEO
Science
Ch-4
GROUPING MATERIALS
(NOTEBOOK EXERCISE AND WORKBOOK EXERCISE)
NOTEBOOK WORK
TO BE SUBMITTED IN GOOGLE CLASSSROOM
PLS CLICK ON THE LINK BELOW FOR VIDEO👇
VIDEO FOR HOW TO SUBMIT/UPLOAD WORK ON GOOGLE CLASSROOM
- You can submit an assignment in
Google Classroom under the "Classwork" section on the desktop site or mobile app. - To submit an assignment in
Google Classroom, you must first "View assignment" and then select the "Add or create" option under the "Your work" menu. - Links and Google Drive attachments, including a document, slide, sheet, drawing, or PDF file, can all be uploaded and submitted in Google Classroom.
- NOTE: PLEASE SEND ONLY PDF FILE
- You can upload multiple files, unsubmitted assignments, and leave notes for your instructor in Google Classroom.
WORKBOOK WORK
TO BE UPLOADED ON BETWEEN US
- DIAGNOSTIC TEST- GOOGLE FORM
- KWL CHART
NEW WORDS H.W
1.inflate
2.density
3.fuzzy
4.sheen
5.miscible
NEW TERMS
1. inflate: fill with air
2.fuzzy: having a frizzy texture or appearance
NOTE: DRAW DIAGRAMS AS AND WHERE REQUIRED
Answer the following questions in one word or one sentence.
a. Name the type of material which allows light to completely pass through it.
ANS. Transparent
b. How are materials classified on the basis of the amount of light that passes through them?
ANS. Transparent, translucent or opaque.
c. What is the gentle sheen or soft glow possessed by a material known as?
ANS. Lustre
5. Answer the following questions in short.
a. What do you mean by properties of a material?
ANS. Features or characteristics of a material such as its strength, transparency, conduction, etc. are called its properties.
b. How are materials grouped?
ANS. We group objects on the basis of certain similarities and dissimilarities in their properties. This could be based on size, colour, shape, use or any other quality.
c. Explain the factor on which the sinking or floating of an object depends.
ANS. When two substances such as a solid and a liquid or a liquid and a liquid are put together the less dense substance floats above the denser one.
6. Give reasons.
a. A piece of wood floats in water.
ANS. When a piece of wood is placed in water, it floats. This is due to the difference in the densities of the wood and the water.
b. We can see through air but not through a book.
ANS. Air is transparent as light fully passes through it but book is an opaque material as light does not pass through it. So, We can see through air but not through a book.
7. Answer the following questions in detail.
a. What are the advantages of classification?
ANS. The advantages of classification are:
• It helps in identification.
• It helps in sorting of objects.
• It helps in locating things.
• It makes the study of different objects easy and more meaningful.
• It helps to understand similarities and dissimilarities among the objects.
b. Explain miscible and immiscible liquids giving suitable examples.
ANS. Liquids such as vinegar, glycerine and honey also dissolve in water. When two liquids mix with each other or dissolve each other, they are known as miscible liquids.
There are other liquids such as oil, petrol and kerosene which do not dissolve in water. They form a layer on the surface of water. The liquids which do not mix with each other are known as immiscible liquids.
c. Discuss solubility of solids, liquids and gases in water with the help of examples.
ANS. SOLIDS- To make lemonade, you take a glass of water. You add sugar, salt and lemon juice to it. You stir it with a spoon and your lemonade is ready. The sugar and salt disappear when you add them to water. In other words, sugar and salt dissolve in water. The substances which disappear or dissolve completely in water are called soluble substances. Some substances such as glass or sand do not dissolve in water. Such substances are known as insoluble substances.
LIQUIDS- liquids such as vinegar, glycerine and honey also dissolve in water. When two liquids mix with each other or dissolve each other, they are known as miscible liquids. There are other liquids such as oil, petrol and kerosene which do not dissolve in water. They form a layer on the surface of water. The liquids which do not mix with each other are known as immiscible liquids.
GASES- A bottle of cold drink opens with a popping sound accompanied with air bubbles. These bubbles are nothing but carbon dioxide gas. This shows that carbon dioxide dissolves in water. Oxygen too dissolves in water. It is this oxygen that the aquatic animals use for respiration. However, gases like methane do not dissolve in water.
8. Diagram based question.
The following materials are dropped in a bucket of water - a piece of paper, a stone, a nail or a pin, a wooden stick, an eraser, a piece of clay, a leaf, a piece of string or rope and a seed. Some of these may float while some may sink in water. Represent your conclusion in the form of a well–labelled diagram.
ANS. TO BE DONE BY YOURSELF
10. HOTS (Higher Order Thinking Skills)
a. We know that metals sink in water. Why do large ships made up of metal float on water?
ANS. The air that is inside a ship is much less dense than water. That's what keeps it floating. As a ship is set in water, it pushes down and displaces an amount of water equal to its weight.
LINK FOR WORKBOOK EXERCISE👇
