Name two items that are made from coconut fibre.
Ropes, mats, bags, brushes are the items that are made from coconut fibre (eventually from the coconut). The husk or outer covering of coconut is known as coconut fibre which is also known as natural fibre.
State whether the following statements are true or false:
a) Yarn is made from fibres.
b) Spinning is a process of making fibres.
c) Jute is the outer covering of coconut.
d) The process of removing seed from cotton is called ginning.
e) Weaving of yarn makes a piece of fabric.
f) Silk fibre is obtained from the stem of a plant.
g) Polyester is a natural fibre.
Fill in the blanks:
a) Plant fibres are obtained from_________ and ________ .
b) Animals fibres are __________ and ___________ .
From which parts of the plant cotton and jute are obtained?
Classify the following fibres as natural or synthetic:
nylon, wool, cotton, silk, polyester, jute
Explain the process of making yarn from fibre.
(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.
Rearrange the boxes given below to make a sentence that helps us understand opaque objects.
To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?
Do you find that all living beings need the same kind of food?
Name the major nutrients in our food.
Name five objects which can be made from wood.
Why do we need to separate different components of a mixture? Give two examples.
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.
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.
What is a habitat?
Name the part of the plant which produces its food. Name this process.
Rearrange the boxes given below to make a sentence that helps us understand opaque objects.
Give examples to explain the difference between changes that can or cannot be reversed.
Why could you not use an elastic measuring tape to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with an elastic tape?
How do plants and animals help each other in the exchange of gases in the atmosphere?
Name the major nutrients in our food.
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
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?
A drawing sheet changes when you draw a picture on it. Can you reverse this change?
How will you show that air is dissolved in water?