Class 6 science chapter 3
Today, I am sharing Class 6 science chapter 3 fibre to fabric question answers. Class 6 science chapter 3 cordova book solutions.
Very short answer questions
1. Name two natural fibres obtained from (a) plants (b) animals
ANSWER: (a) Plants- jute and cotton
(b) animals- silk and wool
2. Name two mixed fibres.
ANSWER: (a) Terrycot ( terylene + cotton)
(b) Terrysilk (terylene +silk)
3. Name two devices for making fabrics from yarn.
ANSWER: Powerloom- making fabrics from yarn on a large scale.
Handloom- making fabrics from yarn on a small scale.
4. What is handloom?
ANSWER: Handloom is defined as weaving clothes on a small scale. Weaving is the process of arranging two sets of yarns together to make fabric.
5. Define ginning.
ANSWER: The separation of cotton fibres from their seeds is called as ginning.
Short answer questions
1. Why do we wear clothes?
ANSWER: We wear to protect ourselves from different weather conditions such as heat, cold and rain.
2. Classify the following fibres into natural and synthetic: nylon, wool, cotton, silk, polyester, jute.
ANSWER: Natural fibres- wool, silk, cotton, jute
Synthetic fibres- nylon, polyester
3. From which parts of the plant, are cotton and jute obtained?
ANSWER: Cotton is obtained from fruits cotton plant which are called as cotton bolls. Jute is obtained from the stem of the plant.
4. How are fibres classified? Give two examples of each.
5. Nitiks sees a poor man shivering in the cold outside her house. She takes permission from her mother and gives him an old blanket.
(a) Name the fibres used for making blanket.
ANSWER: Natural fibres used for making blanket is wool. Synthetic fibre used for making blanket is acrylic.
(b) Which value is shown by Nitika?
Answer: It shows that Nitika is very kind-hearted and obedient girl. This is shown by her behavior of taking permission from her mother and giving blanket to poor man.
Long answer questions
1. Discuss the advantages and disadvantages of natural fabrics.
ANSWER: Advantages of natural fabrics:
a) They absorbs more water and sweat.
b) They allow air to pass through them.
c) They are biodegradable and thus do not affect environment.
Disadvantages of natural fabrics:
a) They do not dry rapidly.
b) They may shrink on washing.
2. How do you obtain jute fibres from their plants? Explain.
ANSWER: Firstly, seeds are sown in march or april. The plants are cut during the flowering stage as good quality jute is obtained from its young stem. After harvesting, the stalks of bundles are tied and left in stagnant water as bacteria grows easily in stagnant water. Bateria eat the sticky matter that holds the fibres to inner part of stem. This process is called as retting. After rotting, fibres are separated by hands and dried in the sun. They are then sent to mills for woven into textiles.
3. Discuss the uses of jute.
ANSWER: They are used for making sacks or gunny bags.
They are woven into curtains, carpets etc.
They are used for as sacs for packing cereals.
HOTS (Higher order thinking skills)
1. Radhika on a very cold day, took three blankets to keep her warm whereas her brother, Raghav, took only one thick blanketwith thickness equal to 3 blankets. Who will get more warmth and why?
ANSWER: Three blankets that are taken by Radhika are warmer than one thick blanket taken by Raghav because air is trapped between three blankets. The air is bad conductor of heat which means it does not pass heat from blanket to the surroundings.
2. Mansi is planning to visit Jaipur and Jodhpur during her summer vacation. What should she keep with her- nylon leggings or cotton pants with kurtas? Why?
ANSWER: Jaipur and jhodpur are hot states in summer. Thus, Mansi should wear cotton clothes as they are natural fibres and absorb sweat. It helps the body to be cool. Nylon is a synthetic fibre and does not absorb sweat.
Application based questions:
1. Which fabric will you wear while working in the kitchen- cotton or polyester? Why?
ANSWER: We should wear cotton clothes while working in the kitchen as they are natural fibres and do not catch fire easily. They also absorb sweat while working in the kitchen and makes our body cool. Polyester is a synthetic fabric that catches fire easily and also it does not absorb sweat.
2. Aman’s mom is a working woman who leaves for her office early in the morning. She takes a metro to the office and returns late in the evening. What type of fabrics should she use for her dress?
ANSWER: She should wear cotton clothes as they are natural fibres and absorbs sweat that makes our body cool. Synthetic fibres such as polyester do not absorb sweat.
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