DAV PUBLIC SCHOOL, BALASORE

HOLIDAY HOMEWORK

CLASS- X, DATE- 21.05.2021

ENGLISH

Q1. Based on the lesson Nelson Mandela-a long walk to freedom, collect the images of some of the

Patriots of your country who sacrificed their life for the sake of your country and write few lines about

them.

2. Attempt reading comprehension given in unit-3 in your grammar book, WORDS AND

EXPRESSIONS and write the correct answers in your copy.

3. During pandemic, some of the unlawful people disobey govt's rules and regulations. Expressing your

concern over it, write a letter to the editor of a national daily awaring people about the grimmest

consequences of the activities and request the concerned authorities to take adequate measures.(120

words)

4. Collect 20 verbs from the lesson A Triumph of Surgery and write their three forms in your copy.

5. Make self video presenting recitation on the poem FIRE AND ICE and send it in your respective

class English group

MATHEMATICS

NCERT TEXT BOOK: CH.1 EXERCISE 1.1 Q.NO. 2, 3, 4, 5

(REAL NUMBERS) EXERCISE 1.2 Q.NO 3, 4, 5, 6, 7

EXERCISE 1.3 Q. NO 2

LEARNING OUTCOMES: Students will be able to generalize properties of numbers and relations among them

studied earlier to evolve results, such as Euclid’s division algorithm, fundamental theorem of arithmetic and apply

them to solve problems related to real life contexts.

NCERT TEXT BOOK: CH.2 EXERCISE 2.2 Q.NO 1, 2

(POLYNOMIALS) EXERCISE 2.3 Q. NO 3, 4

ACTIVITY: To determine the zeros of a quadratic polynomial 6x2 – 7x – 3 graphically and verify it algebraically.

LEARNING OUTCOMES: Students will be able to develop a relation between algebraic and graphical methods of

finding the zeros of a polynomial.

NCERT TEXT BOOK: CH.3 EXERCISE 3.1 Q.NO 1, 2, 3

(PAIR OF LINEAR EQUATIONS

IN TWO VARIABLES). EXERCISE 3.2. Q.NO 2,3,5,7

ACTIVITY: To verify the conditions for consistency of a system of pair of linear equations in two variables by

graphical representation.

LEARNING OUTCOMES: Students will be able to find solutions of pair of linear equations in two variables using the

graphical method.

GEOGRAPHY

CLASS SUBJECT

WHAT I KNOW (Previous knowledge)

WHAT I WANT TO KNOW (Objectives)

WHAT I LEARNT (Outcomes)

ACTIVITY METHODOL-OGY

MATERI-ALS REQUIR-ED

X GEOGRAPHY

Students have general knowledge of forest and wildlife.

Specific types of wildlife of India, Causes of depletion and steps taken to conserve them.

Specific types of wildlife of India, Causes of depletion and steps taken to conserve them.

1.Students are asked to make a powerpoint presentation on Wildlife of India. Highlights---

Wildlife of India

Causes of depletion

Role of Community in conservation.

Role of Government in conservation of wildlife.

Students will Make a Powerpoint presentation on wildlife of India using datas, pie diagram map, pictures of animals or particular community and graphical presentation

A4 size paper, Pencil, eraser, colour and network assess,Laptop or mobile

Wildlife/Forest

Key features of Particular animal/animals and forest .

Key features of Particular animal/animals and forest.

2-Students are asked to make Index card [ Topic forest and wildlife]

Students will cut a hard paper in size of 15cm×13 cm and in a decorative way draw and mention key features.

Colour papers, [can use scrapbo-ok page],coloursketch, scissors, pen .

BIOLO GY

1. Prepare the power point presentation of digestive system and respiratory system by showing its parts

through diagram and write its functions.

2. Prepare a scrap book showing the diagram and key terms related to photosynthesis.

3. Write the balanced chemical equation for the process of photosynthesis and explain it.

4. Why do herbivores have longer, small intestine than carnivores?

5. In mammals and birds why is it necessary to separate oxygenated and de-oxygenated blood?

PHYSICS

1. Identify the device used (a spherical mirror or lens) in following cases, when the image formed is virtual Glass

and erect in each case.

(a) Object is placed between device and its focus, image formed is enlarged and behind it.

(b) Object is placed between the focus and device, image formed is enlarged and on the same side as that of

the object.

(c) Object is placed between infinity and device, image formed is diminished and between focus and optical

centre on the same side as that of the object.

(d) Object is placed between infinity and device, image formed is diminished and between pole and focus,

behind it.

2. The image of a candle flame placed at a distance of 30 cm from a mirror is formed on a screen placed in front of the

mirror at a distance of 60 cm from its pole. What is the nature of the mirror? Find its focal length. If the height of the

flame is 2.4 cm, find the height of its image. State whether the image formed is erect or inverted.

3. Find the size, nature and position of image formed when an object of size 1 cm is placed at a distance of 15 cm from

a concave mirror of focal length 10 cm.

4. An object 2 cm high is placed at a distance of 16 cm from a concave mirror which produces a real image 3 cm high.

(i) Find the position of the image

(ii) What is the focal length of mirror?

5. The absolute refractive indices of glass and water are 3/2 and 4/3 respectively. If the speed of light in glass is 2 ×

108 m/s, calculate the speed of light in (i) vacuum, (ii) water.

6. An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from

the mirror should a screen be placed, so that a sharp focused image can be obtained? Find the size and the nature of the

image.

7. Assertion-Reason Type Questions (Q.N. 1 to 4)

In each of the following questions, a statement of Assertion is given by the corresponding statement of Reason. Of the

statements, mark the correct answer as

(a) If both A and R are true, and R is correct explanation of the assertion.

(b)If both A and R are true, but R is not the correct explanation of the assertion.

(c) A is true, but R is false.

(d)A is false, but R is true.

1. Assertion:- The mirror used in search lights are concave spherical.

Reason:- In concave spherical mirror the image formed is always virtual.

2. Assertion:- The height of an object is always considered positive.

Reason:- An object is always placed above the principal axis in this upward direction.

3. Assertion:- For observing traffic at back the driver mirror is convex mirror.

Reason:- A convex mirror has much larger field of view than a plane mirror.

4. Assertion:- Refractive index has no units.

Reason:- The refractive index is a ratio of two similar quantities.

Prepare a PPT:- REFLECTION.

Art Integration:- (SCIENCE PROJECT)

Study of acidic and basic nature of the day to day life substances, the chemical substances involved in sustaining

human life process and their interaction with electric current.

Activities:-To Study Refraction of Light in Rectangular Glass Slab

CHEMISTRY

(Note:-Do this holiday home work in home work note book.

1 Why is it necessary to balance a chemical equation?

2 In the equations given below, state giving reasons, whether substances have been oxidised or reduced.

(i) PbO + CO –> Pb + CO2

(ii) (ii) H2S + Cl2–>2HCl + S.

3 A sample of water weed was placed in water and exposed to sunlight. Bubbles of a gas are seen

on the surface of the leaves.

(i) Name the gas evolved.

(ii) Name the process taking place.

(iii) Write a balanced equation of reaction taking place.

4)What are the characteristics of chemical reactions?

5) Crossword Down:

1. Phenomenon in which iron vessels get damaged on adding copper sulphate solution (12)

3. Phenomenon in which food material starts to smell badly on keeping (9)

Across:

2. A reaction between acids and bases (14)

4. A reaction in which one of the products becomes insoluble (13)

6) Activity:- (Chemical Reactions Project)

Milk Painting

Instruction:-

Materials Required-

Cow’s Milk Dish soap Ear bud Food coloring Shallow plate or wide bowls Big size Paper

Procedure:-

Fill a plate or bowl with milk. Drop in at least 2 drops of each of four colors of food coloring. The more variety of colors the cooler the painting. Generously dip the end of an ear bud in dish soap. Now dip the ear bud into the milk next to a drop of color. The first thing that will happen is the color will burst as soon as the dish soap hits it. It’s a great effect but very

short lived. Once there is a little dishsoap in the milk it no longer “bursts”. Gently swirl the ear bud through the different colors and you’ll see little rivers of color start to form. Put one paper over that , and paint the magic colour.

7) Make one power point presentation on the topic of displacement reaction.

Learning Objectives:

Students will able to:

Practice every concept of chemical reactions. Engage their time for doing project work and activity. Understand science behind the activity

HISTORY, CIVICS, ECONOMICS

DEVELOPMENT

Learning Objective-

(A) Children will learn various factors responsible for a country’s progress.

Learning Outcomes-

(A) Children will be able to know India’s status in terms of development.

1. Prepare a PPT on India’s development in education, health and agriculture since 2000.

2. Assertion: A country that was extremely rich in natural resources has mainly relied on oil extraction

for revenue generation for several centuries. However, the scientists predict that the country may

become poor in the future if other means of generating income are not devised.

Reason: Oil is a non-renewable resource, and it is likely to get exhausted if not used judiciously. [1]

(a) Both assertion and reason are true, and reason is the correct explanation of assertion.

(b) Both assertion and reason are true, but reason is not the correct explanation of assertion.

(c) Assertion is true, but reason is false.

(d) Both assertion and reason are false.

NATIONALISM IN EUROPE

Learning Objectives-

(A) Children will know get to know various unification processes.

Learning Outcomes-

(A) Children can remember the processes with dates.

1. Prepare timelines on

(a) Unification of Britain

(b) Unification of Italy

(c) Unification of Germany

2. Following the defeat of Napoleon in 1815 European governments were driven by a spirit of

conservatism. Justify the statement with suitable arguments.

POWER SHARING

Learning Objectives-

(A) Children will learn various internal problems and their solutions.

Learning Outcomes-

(A) Children can grasp the entire chapter through these.

1. Prepare Index Cards on the chapter Power Sharing highlighting Belgium and Sri Lanka

(majoritarianism, ethnic issues, accommodation policies, etc).

2. Draw a Mind Map on the chapter Power Sharing.

INFORMATION TECHNOLOGY

1. Cross Word Puzzle on Computer Basics.

2. Write a note how IT has impacted business sector positively.

3. Technology plays an important role in life. Justify how to use it safely.

4. Prepare a card to create awareness among people on corona virus using digital

documentation.

5. Create a project (Practical file) on digital documentation advanced by describing 10

options from menu bar.

Hint: https://youtu.be/Pc6RPjfGW6U

LEARNING OUTCOMES

Students can able to

1. Need of IT in our life 2. Designing Poster 3. Know different options and their use of digital documentation software.