Rubber band, leaf, eraser, cooked rice and fresh chapati are soft materials because these materiaIs can be compressed or stretched easily

Saree, lungi, dupatta and towel.

The method of preparing compost with the help of red worms is called vermi-composting.

The presence of specific features or certain habits, which enable a plant or an animal to live in its habitat comfortably, is called adaptation

Water is called the universal solvent because it dissolves most of the salts and substances in it.

No, all the leaves do not have petioles. Leaves without petiole are called sessile.

Earthworm moves faster than snail.

When you switch on the torch, the filament part of the bulb glows

1% of air includes carbon dioxide (C02), water vapours , helium, hydrogen, dust particles and smoke.

No, the shadows are same for different colour of object, it is always black. Some portion of the shadow may be grey.

Rotational and rectilinear motion are performed during the rolling of a ball.

Ice melts when it is heated. Yes, it is reversible

Winnowing is based on the property that the grains are heavier than husk and hay.

Carbohydrates and fats are two components of food which provide energy

We cook food so that it can be used by our body easily.

(i) Coal
(ii) Stone
(iii) Coin
(iv) Pencil
(v) Eraser

Synthetic fibres are more advantageous and economical than natural fibres due to following reasons:
(i) synthetic fibres are cheap
(ii) more resistant to water
(iii) high mechanical strength
(iv) easy to wash and handle
(v) dry up quickly.

Middle finger has one bone.

Water pipes break because the water inside them expands as it gets close to freezing. This causes an increase in pressure inside the pipe. When the pressure gets too high for the pipe to contain, it breaks.

When a mixture is allowed to stand for some time, the heavier components in the mixture settle at the bottom and the process is called sedimentation. For example, when mixture of sand and water is allowed to stand for some time, the particles of sand settle down at the bottom of vessel. The settling down of sand particles is called sedimentation.

When we place any iron bar near a bar magnet, it becomes a magnet temporary and small objects like pin, iron filings can be attracted by it. But when we remove this bar from magnet, it again becomes an iron bar and does not attract the small iron objects.

We should not burn plastic items because
(i) they do not bum easily.
(ii) they produce toxic gases when burned and left ire over ashes are also toxic.
(iii) they add to soil pollution.
(iv) burnt pieces may be eaten by cows which may choke them to death.
(v) toxic gases lead to many respiratory diseases.

Bulb has two terminals because it is connected to the terminals of a cell or a battery so that current passes through the filament.

Air is present everywhere and it contains some gases, water vapours and dust particles that stick to the window surface and are visible due to the transparency of windows.
These particles attract outdoor elements Iike pollens, etc which collect on glass window and together form a layer. That is why, transparent glass windows appear hazy if not wiped off regularly.

Some characters are given below
(i) The birds have hollow bones (light weighted), their forelimbs are modified into wings.
(ii) They have sharp eye sight.
(iii) Their joints are completely fused.

The dark patch of light is known as a shadow which is formed when there is an opaque object in the path of light.
When an image is the reflection of light. By seeing image, we can identify the object but shadow can mislead you from actual object.

As the temperature outside the refrigerator is higher than the refrigerator. So, when the cooled bottle of water is kept on a table, water vapours gets condensed and as a result, puddle of water appears around the bottle.

The measurement of a room using foot of different persons will not be equal. This is because foot steps of every person are not constant. Their distance can very time to time.

The parts of a leaf are mentioned as : A - Veins B - Midrib C - Lamina  D - Petiole

Tasty food is not always nutritious and nutritious food may not always be tasty to eat. Certain examples in favour of the above statement are
(i) Potato chips are tasty to eat but not nutritious as they contain huge amount of fats.
(ii) Green leafy vegetables either boiled or steamed are very nutritious but not good in taste.
(iii) Certain fast foods like pizza, burger, etc., are very good to taste but are not nutritious as they contain huge amount of fat.

Ingredients of pizza are maida, butter, cheese and vegetables.
(a) Maida and vegetables come from plants.
(b) Butter and cheese do not come from plants. They come from animals.

Take a candle and fix it at the centre of a glass vessel. Add some quantity of water in the vessel. Now place an empty dry glass jar over it. Mark five lines at an equal distance above the water surface. Now, carefully light the candle and cover the glass jar. Wait for a few seconds and how the flame will be extinguished due to absence of oxygen to bum.
Now, we can observe that the water level raised in the glass jar is 1/5 of the volume of air present in the glass jar
This experiment shows that one-fifth of air is oxygen

There are following properties by which we can prove that these materials are different:

Natural fibres: Wool and Jute.
i) Wool is an animal fibre which is obtained from sheep.
ii) Jute is a plant fibre which is obtained from plant.
Synthetic fibres: Acrylic, Polyester, Rayon.
iii) These are man-made fibres which are prepared from different chemical substances.

Solar Eclipse: When the sun, the earth and the moon come in a straight line with the moon in between the earth and the sun, then the shadow of the moon falls on the earth. This results in solar eclipse. Solar eclipse occurs on a new moon day.

Lunar Eclipse: When the sun, the earth and the moon come in a straight line with the earth in between the moon and the sun, then the shadow of the earth falls on the moon. This results in Lunar eclipse. Lunar eclipse takes place on a full moon day. The shadow consists of two parts. One part is completely dark part of the shadow, where light does not reach from the source of light and this part is known as umbra. Other part is not completely dark, where some light reaches from the source of light and this part is known as penumbra. Penumbra surrounds the umbra.

Draw a curved line CD. Take a thread and make a knot at one of its ends. Keep the knot made in the thread on point C of the line. Place a small portion of the thread along the line, keeping it tight using your fingers and thumb. Keep on stretching the thread on the curved line till you take the thread to the point D of the line. Make a mark on the thread where it touches the other end of the line at point D. Now, stretch the thread along a metre scale and the length between the knot in the beginning and mark on the thread is measured through scale. This measured length on scale will give you the length of the curved line CD.

As given in figures, the North pole will be far apart when we bring more near to the compass needle and it will be closer to it when we bring the South pole towards it.

The above mentioned wastes can be categorised into two categories:
(i) Green bins Wastes which can be decomposed is put in green dustbins, e.g. plants and animals waste, peels of vegetables and fruits, dried leaves, twigs, remains of meat like flesh and bones.
 (ii) Blue bins Wastes which cannot be decomposed but can be recycled is put in blue dustbins, e.g. plastic materials, glass, metals, etc.

This can be done by arranging the circuit as the given diagram.
One terminal should be connected to the terminal of the cell directly and other terminal can be connected using the given wire.

A moving car though moves is not considered as a living organism because of the following reasons:
(i) Living organisms have the ability to move on their own, whereas a car moves by the burning of fuels like diesel and petrol.
(ii) Like all living organisms, a car does not show any other living characteristics like respiration, digestion, reproduction or growth.

(a) The doctor has diagnosed the fracture by taking photographs of bones, i.e. X-ray images.
(b) X-rays show us the images and shapes of different bones in our body.
(c) Friendly behaviour, sense of responsibility and kind nature are the values shown by Rishi's friends.

Sea water reaches a lake or pond is represented by a diagram:

(a) Made a dough this change cannot be reversed
(b) Rolled the dough to make a chapati. This change can be reversed.
(c) Baked the chapati on a pan, this change cannot be reversed.
(d) Dried the chapati and ground it in a grinder to make powder, this change cannot be reversed.

(a) In the given figure:
(i) Petiole (ii) Midrib (iii) Lamina (iv) Vein
(b) The leaf has reticulate venation, the veins in leaf occur in an irregular way forming a net-like structure.
(c) Grass leaves have parallel type of venation. The vein run parallel to each other on both sides of midrib.

Paheli can make this water fit for drinking by work on following sequence:
Filtration using muslin cloth (cotton fabric).
                         \(\downarrow\)
Swirl with alum and leave water undisturbed for some time.
                          \(\downarrow\)
The clear liquid above the impurities is poured in another container(decantation).
                           \(\downarrow\)
Boil for 10 min in covered pan with lid.
                           \(\downarrow\)
Cool, filter and now, it is fit for drinking.

(a) Many vegetables contain most of the nutrients just below their skin surface. Thick peeling may lead to their removal.
(b) Washing of vegetables after peeling or cutting removes the water soluble vitamins and minerals from them and lowers their nutritive value.
(c) These components are called nutrients like minerals (iron, calcium, phosporous) and vitamins (B, A, C, D, E).
(d) Vegetables like tomatoes, potatoes, green leafy vegetables, etc.
(e) Yes, Radha is sincere, observant, helpful and knowledgeable. She used her knowledge in right place and stopped her mother for doing incorrect work.