CLASS-6 SUBJECT ENGLISH CHAPTER-7 GETTING TO KNOW PLANTS

 EVENTS CONVENT HIGH SCHOOL

08/02/2022      CLASS- 6  SESSION 2021-22
SUBJECT : SCIENCE
CHAPTER-7
 GETTING TO KNOW PLANTS.

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 Question 1.Match the following items given in Column A with that in Column B:

Column A	Column B
(a) Creeper	Need support to stand up.
(b) Herb	Green and tender stem.
(c) Shrub	Hard but thin stem.
(d) Tree	Hard and thick stem.
(e)  Root	Absorption of mineral and water.
(h)  Stem	Transport food, water and mineral.
(g)  Leaf	Manufacture food.
(h)  Flower	Reproduction.

Question 2.Fill in the blanks with appropriate words:

1. Water Havels up the stem through …………. inside the stem.
2. Thick vein in the centre of leaf is called ………….. .
3. Design made by ……………. in a leaf is called venation.
4. Leaves Bicchu (Meltles) give you …………. on touching.
5. Leaves have ……………. shapes, sizes, edges, tips, etc.

Answers:-

1. narrow tubes
2. midrib
3. veins
4. rashes and itching
5. different

Question 3.State whether the statements given below are True or False:

1. Herbs are usually short and sometimes do not have branches.
2. In shrubs, branches arise from the base of the stem.
3. In trees, branches arise from the upper part of stem.
4. Stem absorbs water and minerals from the soil.
5. Roots hold the plant firmly in the soil.

Answers:

1. True
2. True
3. True
4. False
5. True

Question 4.Choose the correct option in the following questions:

(i) Which is an example of a shrub?
(a) Spinach
(b) Mango tree
(c) Tomato plant
(d) Lemon
Answer:
(d) Spinach and tomato are herbs while mango is a tree. So lemon is a shrub.

(ii) Which of the following type of plants has thick, hard and woody stem?
(a) Tree
(b) Shrub
(c) Herb
(d) All of these
Answer:
(a) Herb has a soft stem while shrubs have thin stem.

(iii) Which is not a part of a leaf?
(a) Petiole
(b) Lamina
(c) Veins
(d) Nodes
Answer:
(d) Nodes are found on stem.

(iv) parallel venation is not found in
(a) sugarcane
(b) peepal
(c) maize
(d) wheat
Answer:
(b) In peepal, reticulate venation.

(v) Which one of the following is a function of leaves?
(a) Photosynthesis
(b) Transpiration
(c) Both (a) and (b)
(d) Support fruits
Answer:
(c) Leaves perform both functions.

VERY SHORT ANSWER TYPE QUESTIONS

1. List few plants found around your house.
Ans:  Mango, neem, grass, chilli, palak and banyan tree.

2. Are all the plants same in size?
Ans: No, all plants are of different sizes.

3. What are the major parts of plants?
Ans: Stem, root, leaves and flowers.

4. How many kinds of plants are there?
Ans: There are three kinds of plants:
(i) Herbs
(ii) Shrubs
(iii) Trees

5. Name two plants that belong to herbs.
Ans:
(i) Tomato
(ii) Potato

SHORT ANSWER TYPE QUESTIONS
1. What are weeds?
Ans: The unwanted plants that grow in the fields with the main crops or in their surroundings are called weeds. Weeds are the plants which are not grown by the farmers. For example, grass.

2. Classify plants and give an example of each.
Ans: On the basis of various characteristics most of the plants can be classified into three categories:
(i) Herbs, e.g. tomato
(ii) Shrubs, e.g. lemon
(iii) Trees, e.g. mango

3. What are herbs? Give two examples.
Ans: The plants with green and tender stems are called herbs. They are usually short and may have no or less branches. For example, tomato, potato.

4. What are shrubs? Give two examples.
Ans: The plants which have a hard but not a very thick stem are called shrubs. Such plants have the stem branching out near the base. For example, lemon, rose plants.

DRAW A DIAGRAM OF 

CLASS-9 SUBJECT SCIENCE CHAPTER-8 MOTION

 EVENTS CONVENT HIGH SCHOOL

01/02/2022      CLASS- 9   SESSION 2021-22
SUBJECT : SCIENCE

CHAPTER-8
MOTION

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Very Short Answer Questions

Question 1.The phenomenon of motion was placed on a sound scientific footing by two scientists. Write their names.
Answer:
Galileo Galilei and Isaac Newton.

Question 2.Are rest and motion absolute or relative terms?
Answer:
They are relative terms.

Question 3.Suppose a ball is thrown vertically upwards from a position P above the ground. It rises to the highest point Q and returns to the same point P. What is the net displacement and distance travelled by the ball?
Answer:
Displacement is zero. Distance is twice the distance between position P and Q.

Question 4.Which speed is greater: 30 m/s or 30 km/h?
Answer:
30 m/s

Question 5.What do you mean by 2 m/s2?
Answer:
The velocity of the body increases by 2 m/s after every second.

Question 6.Can uniform linear motion be accelerated?
Answer:
No

Question 7.Define one radian.
Answer:
It is the angle which is subtended at the centre by an arc having a length equal to the radius of the circle.

Question 8.What is the relation between linear velocity and angular velocity?
Answer:
Linear velocity = Angular velocity × Radius of circular path.

Short Answer Type 1

Question 1.Distinguish between speed and velocity.
Answer:
Speed:

• Speed is the ratio of distance and time.
• Speed is always positive
• Speed is a scalar quantity.

Velocity:

• Velocity is the ratio of displacement and time.
• Velocity may be negative or positive.
• Velocity is a vector quantity.

Question 2.Distinguish between distance and displacement.
Answer:
Distance

• It is the actual length of the path covered by a moving body.
• It is always positive or zero.
• It is a scalar quantity.

Displacement:

• It is the shortest distance measured between the initial and final positions.
• It may be positive, negative, or zero.
• it is a vector quantity.

Question 3.Write down the SI unit of the following quantities:
(a) Displacement
(b) Speed
(c) Velocity
(d) Acceleration
Answer:
(a) m
(b) m/s
(c) m/s
(d) m/s2

DEFINE

Question 1.Define the following terms:
(a) Distance
(b) Displacement
(c) Speed
(d) Velocity
(e) Acceleration
(f) Uniform motion
(g) Uniform circular motion
(h) Scalar quantity
(i) Vector quantity

Answer:
(a) Distance: The total path length traveled by a body in a given interval of time is called distance.
(b) Displacement: The shortest distance measured from the initial to the final position of an object is known as displacement.
(c) Speed: The speed of a body is defined as the distance traveled per unit time.
(d) Velocity: Velocity is defined as displacement per unit time.
(e) Acceleration: The rate of change of velocity with respect to time.
(f) Uniform motion: A body moving in a straight line has a uniform motion if it travels the equal distance in equal intervals of tune.
(g) Non-uniform motion: A body has a non-uniform motion if it travels unequal distances in equal intervals of time.
(h) Scalar quantity: A physical quantity which is described completely by its magnitude only, is called a scalar quantity.
(i) Vector quantity: A physical quantity that has magnitude as well as direction and obeys the vector addition is called a vector quantity.

Question 2.Draw a position-time graph of for
(a) rest
(b) uniform motion
(c) Non-uniform motion
Answer:
(a) Position – time graph for rest

(b) Position – time graph for uniform motion

(c) Position – time graph for non-uniform motion

CLASS-6 SUBJECT SCIENCE CHAPTER-9 THE LIVING ORGANISM AND THEIR SURROUNDINGS.

 EVENTS CONVENT HIGH SCHOOL

01/02/2022      CLASS- 6   SESSION 2021-22
SUBJECT : SCIENCE

CHAPTER-9
THE LIVING ORGANISM AND THEIR SURROUNDINGS 

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1.Fill in the blanks:
(a) The presence of specific features which enables a plant or an animal to live in a particular habitat is called adaptation.
(b) The habitats of the plants and animals that live on land are called terrestrial habitats.
(c)The habitats of plants and animals that live in water are called aquatic habitats.
(d) Soil, water and air are the abiotic factors of a habitats.
(e) Changes in our surroundings that make us respond to them are called stimuli.

 VERY SHORT ANSWER TYPE QUESTIONS

1. Name some plants found on mountains.
Ans: Oaks, Pinus and Deodars.

2. What is habitat?
Ans:. The place where organisms live and which provide food and safety for them is ‘called habitat.

3. Name a few habitats.
Ans: Forests, grassland, mountains, ponds and oceans etc.

4. Name two organisms that live in deserts.
Ans:  Cactus, camel, desert rat.

5. Name a few plants that live in ponds.
Ans:  Hydrilla, lotus, hyacinth etc.

6. Name the habitat where various types of fish live.
Ans:  Pond, river, sea.

7. Name a common thing in all fishes.
Ans:  Gills, streamlined body, fins, tail.

8. What is the function of gill?
Ans: Gills help the fish to absorb oxygen dissolved in water.

SHORT ANSWER TYPE QUESTIONS

1. What are the differences in the desert and sea regions?
Ans: In the sea, plants and animals are surrounded by salty water. Most of them use the air dissolved in water for breathing. In desert, a very little amount of water is available. It is very hot in the day time and very cold at night. The organisms breathe air from the surroundings.

2. What do you mean by term adaptation?
Ans: The presence of specific features or certain habits which enable a plant or an animal to live in its surroundings is called adaptation.

3. Explain the features offish which help it to adapt to live in water.
Ans:
(i) The shape of the fish is streamlined which help in the movement.
(ii) The slippery scales/skin on their bodies to protect them.

(iii) They have flat fins and tails which help them to swim, change direction and to keep the body balanced.
(iv) They have gills which help in breathing in water.

CLASS-8 SUBJECT SCIENCE CHAPTER-6 COMBUSTION AND FLAMES

 EVENTS CONVENT HIGH SCHOOL

01/02/2022      CLASS- 8   SESSION 2021-22
SUBJECT : SCIENCE

CHAPTER-6
COMBUSTION AND FLAMES

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Question 1.List conditions under which combustion can take place.
Answer:
Combustion can take place in the presence of:
(a) a combustible substance.
(b) oxygen, that is, the supporter of combustion.
(c) attainment of ignition temperature of the substance.

Question 2.Fill in the blanks.
(a) Burning of wood and coal causes pollutionof air.
(b) A liquid fuel, used in homes is LPG
(c) Fuel must be heated to its ignition temperature before it starts burning.
(d) Fire produced by oil cannot be controlled by water

Question 3.Explain how the use of CNG in automobiles has reduced pollution in our cities.
Answer:
The use of CNG in automobiles has reduced pollution in our cities as it is a quality fuel and has some benefits:
(a) It gives out less carbon dioxide gas, carbon monoxide gas, sulphur dioxide and nitrogen dioxide, which is beneficial as they play crucial role in global warming and acid rain.
(b) It leaves behind no residue after its combustion.

Question 4.Compare LPG and wood as fuels.
Answer:

LPG	Wood
(i) It does not cause pollution on combustion.	(i) It pollutes air on its combustion.
(ii) No smoke is produced.	(ii) It produces smoke.
(iii) It is a liquid fuel.	(iii) It is a solid fuel.
(iv) It has more calorific value (55000 kJ/kg).	(iv) It has less calorific value (17000 kJ/kg).
(v) It can be easily transported, as it is stored in cylinders.	(v) It can’t be transported easily like LPG fuels.

Very Short Answer Questions

Question 1.Name the most common fuel used in homes.
Answer:
Liquefied Petroleum Gas. (LPG)

Question 2.Name the most common fire extinguisher.
Answer:
Water

Question 3.What are the states in which a fuel may exist?
Answer:
A fuql may exist in solid, liquid or gaseous state.

Question 4.Name any two combustible substances.
Answer:
Charcoal, wood

Question 5.Does magnesium produce heat and light during its combustion?
Answer:
Yes, it does.

Short Answer Questions

Question 1.What does magnesium burn to form?
Answer:
Magnesium burns to form magnesium oxide and produces heat and light.

Question 2.What does coal produce during its combustion?
Answer:
Coal produces carbon dioxide, heat and light during its combustion.

Question 3.What is combustion?
Answer:
Combustion is a chemical process in which a substance reacts with oxygen to give off heat.

Question 4.Define ignition temperature of a fuel.
Answer:
The lowest temperature at which a fuel catches fire is called its ignition temperature.

Question 5.How does a matchstick catch fire?
Answer:
By rubbing a matchstick against a rough surface (friction), it attains its ignition temperature and thus catches fire.

CLASS-7 SUBJECT SCIENCE CHAPTER-4 HEAT

  EVENTS CONVENT HIGH SCHOOL

01/02/2022      CLASS- 7   SESSION 2021-22
SUBJECT : SCIENCE

CHAPTER-4
HEAT

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Q.1.Fill in the blanks
(a) The hotness of an object is detetmined by its ____________ .
(b) Temperature of boiling water cannot be measured by a ____________ thermometer.
(c) Temperature is measured in degree ____________ .
(d) No medium is required for transfer of heat by the process of ____________.
(e) A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of ____________
(f) Clothes of ___________ colours absorb heat better than clothes of light colours.

Ans. (a) temperature (b) clinical (c) Celsius (d) radiation (e) conduction (f) dark

Very Short Answer Type

Question 1.In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury? 
Answer:
As the temperature increases, then expansion in mercury takes place which leads to the rise in the level of mercury in thermometer.

Question 2.Shopkeepers selling ice blocks usually cover them with jute sacks. Explain why. 
Answer:As we know that jute sacks is thermal insulators, it helps ice not to be melt immediately. So, shopkeepers used to cover ice blocks with jute sacks.

Question 3.The radiators in cars are painted black. Explain why. 
Answer:Since, the black bodies are better radiators, so due to this reason, radiators in cars are painted black.

Question 4.To keep her soup warm, Paheli wrapped the container in which it was kept with a woollen clothes. Can she apply the same method to keep a glass of cold drink cool? Give reason for your Answer: 
Answer:
Yes, she can apply the same method to keep a glass of cold drink cool because wool is a thermal insulator, and it cannot allow to heat pass through it.

Short Answer Type

Question 1.The handle of a pressure cooker is covered with the thick plastic. Explain why?
Answer:
As we know that plastic is a bad conductor of heat due to which the heat from the cooker does not flow to its handle and we can hold it easily.
So, this is a reason because of which the handle of a pressure cooker is covered with the thick plastic.

Question 2.Differentiate between two modes of transfer of heat, i.e. convection and conduction?
Answer:
Difference between convection and conduction

Conduction	Convection
The mode of transfer of heat from the hotter part material to its colder part or from a hot material to a cold material in contact with it without the movement of material as a whole. So, this phenomenon is known as conduction	The mode of transfer of heat from the hotter part of a fluid to its colder parts by the movement of liquid itself. So, this phenomenon is known as convection.
In all the solids, heat is transferred by the process of conduction	In all the liquids and gases, heat is transferred by the process of convection

Question 3.Describe the effects of heat?
Answer:
The effects of heat are
(i) When an object is heated, then it becomes hotter and may get expand. So, in this heat may change the state of the body like ice can also get change into the water.
(ii) Heat sometimes acts as a catalyst to speed up the chemical reaction.
(iii) Heat can even kill the bacteria as well.

Question 4.The freezer is located at the top of the refrigerator. Explain why?
Answer:
The freezer is located at the top of the refrigerator. It is because the air inside and around the compartments of freezer gets cool and move downwards and on the other side, the lesser cool air moves upward to get cooled.
So, as a result of this, convection of heat are setup in the air and the tower section of the . refrigerator also gets cooled faster. .

CLASS-6 SUBJECT SCIENCE (FINALS.E) CHAPTER-5 SEPRATION OF SUBSTANCES

  EVENTS CONVENT HIGH SCHOOL

25/01/2022      CLASS- 6   SESSION 2021-22
SUBJECT :SCIENCE

CHAPTER-5

SEPRATION OF SUBSTANCES

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1. Fill in the blanks:
(a) The method of separating seeds of paddy from its stalks is called .
(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of ______. 
(a) Salt is obtained from sea water by the process of ____________ .
(b) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ____________.
Ans.
(a) threshing
(b)filtration
(b) evaporation
(d) sedimentation and decantation

2. True or false?
(a) A mixture of milk and water can be separated by filtration.
(b) A mixture of powdered salt and sugar can be separated by the process of winnowing.
(c) Separation of sugar from tea can be done with filtration.
(d) Grain and husk can be separated with the process of decantation.
Ans.
(a) False
(b) False
(c) False
(d) False

VERY SHORT ANSWER TYPE QUESTIONS

1. What is strainer?
Ans. Strainer is a kind of sieve which is used to separate a liquid from solid.

2. Name the method used to separate cream from curd.
Ans. Centrifugation.

3. How will you separate mango from a mixture of mango and apple?
Ans. By picking.

4. You are given a mixture of salt and sand. Can you separate them by picking?
Ans. No, we cannot separate them by picking.

5. Name the method used to separate the pieces of stone from grain.
Ans. Handpicking.

SHORT ANSWER TYPE QUESTIONS

l. What is mixture?
Ans. When two or more than two substances are mixed together in any ratio then it is called a mixture.

2. Write various methods of separation of components from their mixture.
Ans.

1. Handpicking
2. Threshing
3. Winnowing
4. Sedimentation
5. Decantation
6. Filtration
7. Evaporation
8. Condensation

3. Define the term handpicking.
Ans. The process used to separate slightly larger particles from a mixture by hand is called handpicking. For example: Stone pieces can be separated from wheat or rice by handpicking.

4. What do you mean by threshing? Where is it used?
Ans. Threshing is a process in which we separate grain from stalks. This process is used by farmer to separate gram, wheat, rice, mustard seeds in his field.

5. Write three methods of separation.
Ans. Handpicking, threshing and winnowing.

6. How will you separate oil and water from their mixture?
Ans. Oil, being lighter than water, will float on it. Two distinct layers are formed and slowly oil is allowed to flow into another container and is separated from water. Separating funnel can also be used to separate the two.

CLASS-6 SUBJECT SCIENCE CHAPTER-2 DIVERSITY AND DISCRIMINATION

EVENTS CONVENT HIGH SCHOOL

14/01/2022      CLASS- 6   SESSION 2021-22
SUBJECT :SCIENCE 

CHAPTER-2
DIVERSITY AND DISCRIMINATION

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I.MULTIPLE CHOICE QUESTIONS:-

(i) The number of major religions in the world is …………………
(a) six
(b) seven
(c) eight
(d) nine.

(ii) An important reason why Muslim girls do not attend a school or drop out of school after a few years is ………….
(a) poverty
(b) superstition
(c) lack of willingness to go to school
(d) None of the above.

(iii) ……… the community was treated as untouchables in the Bombay Presidency.
(a) Koli
(b) Mahar
(c) Nayar
(d) Munda.

(iv)……… is known as the leader of the Dalits.
(a) Dr. Rajendra Prasad
(b) Guru Teg Bahadur
(c) Dr. Bhim Rao Ambedkar
(d) Sardar Valla Bhai Patel
 

(v) India is a secular country—It means ………………
(a) People of different religions have the freedom to practise their religion with any discrimination.
(b) People of a single religion, i.e. Hinduism are allowed to live in the country.
(c) People of India have the freedom to live in any part of the country.
(d) All Indians are equal on the basis of caste and creed.

Answer:
(i) – (c), (ii) – (a), (iii) – (b), (iv) – (c), (v) – (a).

II.FILL IN THE BLANKS:-

1. ……… fought for the rights of the Dalits.
2. The upper castes did not give the so-called ………………..  the same rights as they enjoyed.
3. If you do something to put other people down, you are ……………….  against them.
4. People usually form certain altitudes and opinions about others who Eire not them.
5. ……. stop us from looking at each person as a unique individual with his/her own special qualities and skills that are different from others.

Answer:

1. Dr. Bhim Rao Ambedkar
2. untouchables
3. discriminating
4. like
5. Stereotypes.

III.TRUE/FALSE:-

1. We have more than 1600 languages that are people’s mother tongue.
2. We feel secure with people who are very different from us.
3. Dalits are referred to as Scheduled Tribe (ST).
4. Dr. Bhim Rao Ambedkar belonged to the Mahar caste which was considered untouchable.
5. Government jobs are open to the people who come from the upper caste.

Answer:

1. True
2. False
3. False
4. True
5. False.

I.MATCHING SKILL:-

Ans. (i)—(c), (ii)—(a), (iii)—(d), (iv)—(c).

V.VERY SHORT ANSWER TYPE QUESTIONS :-

1. How do we feel in the company of the people who are very much like us?
Ans: We feel safe and secure in the company of such people.

2. Define the term ‘prejudice’ with an example.
Ans: Prejudice means to judge other people negatively or see them as inferior. For example, if we think that Hindi is the best language and other languages are not important, we are judging these other languages negatively.

3. How do parents often console boys when they fall and hurt themselves?
Ans. Parents say, “Boys are brave, they don’t cry”. ‘

4. Mention one drawback of stereotypes.
Ans: Stereotypes prevent us from doing certain things that we might otherwise be good at.

5. ‘Some people may experience both kinds of discrimination. ’ What do you mean by ‘both kinds of discrimination’? . 
Ans: Some people are poor and they belong to groups whose culture is not valued.

VI. SHORT ANSWER TYPE QUESTIONS :-

1. What do you mean by difference and prejudice? 
Ans: Difference is the variation in the use of language, status, religion, educational background or geographical setting. It is natural. Prejudice is an idea which is affected with a negative feeling for those who are different from us.

2. What is the demerit of the ‘stereotype’ view?
Ans: Stereotype is a negative quality. It does not allow us to think or view a person as a unique individual. We ignore all his good qualities. We don’t think about that individual beyond the set image otherwise he/she is good.

3. How does discrimination occur?                           
Ans: Discrimination is a negative aspect in a social set up. It occurs if we act on prejudices or stereotypes. It promotes ignorance of a particular class or individual in society. Such class or individual is debarred from all opportunities.