ST.XAVIER’S SCHOOLS-CHANDIGARH,PANCHKULA,MOHALI,ZIRAKPUR

CLASS-VII ENGLISH WORKSHEET 8 TOPIC:-FUTURE TENSE

Definition

The future tense is used to express an action that is likely to happen in future.

The future tense has four forms:-

1. Simple Future Tense 2. Future Continuous Tense 3. Future Perfect tense 4. Future Perfect Continuous Tense

The future indefinite tense is used:-

To express an action that will take place in future

Ex- She will do well in her exams.

To indicate an action that will happen as a regular phenomenon or as a habitual thing

Ex -The children will be back by afternoon.

To express the speaker’s assumptions about the future

Ex –I think they will pay us a visit.

We use ‘will/shall’ in different situations:-to talk about future in a general way.(eg-The shops will remain closed

every Sunday.)

While offering to do something (eg-I will help you unpack the bags.)

While agreeing to do something (eg- I will accompany you to the school auditorium.)

‘I think I will’ or ‘I don’t think I will’(eg-I don’t think I will be able to finish the work.)

While asking somebody to do something (eg- Will you please get me a glass of apple juice?)

To express an action over which the speaker has no control (eg-I shall dirty my shoes in this flooded

street.)

SECTIONAL RECAPITULATION

Exercise 1 Fill in the blanks with “will” or “shall”:-

a) I ___ do my best to win a prize.

b) I ___ succeed if you guide me.

KINDS OF SENTENCES FORMULAS EXAMPLES

POSITIVE/SIMPLE/AFFIRMATIVE S+will/shall+V1+O. I will work.

NEGATIVE

S+will/shall+not+V1+O. I will not work.

INTERROGATIVE

Will/shall+S+V1+O? Shall I work?

NEGATIVE INTERROGATIVE Will/shall+S+not+V1+O? Shall I not work?

The helping verbs of future tense are:- will,shall,have

1. SIMPLE FUTURE TENSE/FUTURE INDEFINITE TENSE

USES OF WILL/SHALL

S+will/shall+V1+O

FORMULAS OF SIMPLE FUTURE TENSE IN DIFFERENT KINDS OF

SENTENCES

c) We ____ do it whatever may be the result.

d) ____ we start the game now?

e) I think he ____ come in time.

The future progressive tense is used:-

To indicate an action that will continue at sometime in future

Ex- He and his friends will be presenting a play next week.

To express an action that is fairly certain to happen in the future

Ex- Mr.Mehta will be shifting to his native place after retirement.

Going to is used to suggest a person’s intention to do something in future.It is also used to make predictions

about future on the basis of some observation or signs.

Ex-1)He is hardworking. I am sure he is going to do well in his career.

Ex-2)There was heavy rainfall on the hills.Now, it is going to be chilly

RECAPITULATION

Exercise 2 Fill in the blanks with verbs in the future continuous tense:-

a) Father _____ for office soon. (leave)

b) The mechanic ______ the fan today. (repair)

c) Heena _______ for her cousins in the evening. (wait)

d) Harish ______ a new study table from the market tomorrow. (get)

ANSWER KEY OF WORKSHEET 7

Ex 1 1.had packed 2.had left 3.had prepared 4.had done 5.had learnt

Ex 2 1.had been boiling 2.had been soaring 3.had been mowing 4.had been reading

Ex 3 i) moved ii)came iii)collapsed iv)seemed v)was shrouded vi)was concealed vii)stretched viii)felt

ix)had not seen x)was gasping xi)was xii)woke xiii)had been dreaming.

KINDS OF SENTENCE FORMULAS EXAMPLES

AFFIRMATIVE S+will/shall+be+V1+ing+O. I shall be speaking.

NEGATIVE S+will/shall+not+be+V1+ing+O. I shall not be speaking.

INTERROGATIVE Will/shall+S+be+V1+ing+O? Shall I be speaking?

NEGATIVE

INTERROGATIVE

Will/shall+S+not+be+V1+ing+O? Shall I not be speaking?

2. FUTURE CONTINUOUS TENSE/FUTURE PROGRESSIVE

TENSE S+will/shall+be+V1+ing+O

USES OF GOING TO

FORMULAS OF FUTURE PROGRESSIVE/CONTINUOUSTENSE

The answer key of Worksheet 8 will be attached with Worksheet 9

Class 7 Punjabi Worksheet-6 ( for Mohali & Zirakpur Branches only)

Answer key of Punjabi worksheet – 5 (For Mohali & Zirakpur )

ST. XAVIER’S SCHOOLS, CHANDIGARH, PANCHKULA, MOHALI, ZIRAKPUR

CLASS – VII S.ST WORKSHEET – 8 (GEOGRAPHY)

CHAPTER – 3 (WEATHER AND CLIMATE) (IN CONTINUATION)

HUMIDITY: The amount of water vapours present in the air is called humidity. Humidity

is of two types:

(a) Absolute humidity is the amount of water vapour in grams per cubic metre of air.

Absolute humidity is normally expressed in grams of vapour per cubic metre of air.

(b) Relative humidity is the ratio between the amount of water vapour present in the air

and the maximum amount that can be held by the air at a given temperature. It is

expressed in percentage.

PRECIPITATION: The process through which water from the atmosphere falls down on

the Earth is called precipitation.

Types of Precipitation: Precipitation is classified according to its form in which it reaches

the ground.

1. Rain: Precipitation that reaches the ground in liquid form is called rain.

2. Hail: Hailstones are frozen lumps of ice produced by thunderstorms.

3. Dew: These are tiny drops of water that form when water vapour condenses on the

ground or cool surfaces. It occurs only on calm, cold and clear nights.

4. Snow: This form of precipitation is common in the high latitude areas and the

mountain regions. Snow is precipitation composed of ice crystals.

HOW RAIN IS SHOWN ON A MAP?

The rainfall recorded for a place, either for a day or for a week, or a month, or a year is

shown on a map by isohyet. An isohyet is a line on a map which passes through all the

places having the same rainfall.

ISOHYETS

WIND: Air moves from high pressure areas to low pressure areas. Such a horizontal

movement of air is called the wind. Wind direction and velocity are two characteristics of

wind which are important to the meteorologists. The winds are named on the basis of the

direction from which they blow. Wind blowing from the east is called an easterly wind and

wind blowing from the west is called westerly wind.

Planetary winds - Winds that blow all the time in the same areas of the world are called

permanent winds or prevailing winds.

Periodic Winds - Periodic winds are those which blow during a particular period of the

day or season of the year. Periodic winds are also called Local and Regional Winds.

Land and sea breezes and the Monsoon winds are typical examples of periodic winds

CLOUDS: A cloud is a large collection of very tiny droplets of water or ice crystals. The

droplets are so small and light that they can float in the air. Clouds are formed through

evaporation and condensation.

Classification of clouds: Clouds are classified on the basis of their shape and the height at

which they are formed. Basically there are three types of clouds i.e. high clouds, middle

clouds and low clouds.

TYPES OF CLOUDS

High Clouds: Because of the cold temperature at high altitude, high clouds are made up of

ice crystals.

Middle Clouds: Middle clouds can be made up of both water droplets and ice crystals.

Low Clouds: Low clouds are made up of water droplets.

MEASUREMENT OF TEMPERATURE: Temperature is measured with the help of a

thermometer. A thermometer is made up of a glass tube which is filled with mercury.

Mercury expands more than the glass when it is heated and when cooled it contracts more

than the glass. Due to this fact the liquid in the glass tube rises when the temperature rises

and falls when the temperature falls.

THERMOMETER

Temperature is recorded in degrees Celsius or Fahrenheit.

A special type of thermometer known as Six’s Maximum and Minimum Thermometer

provides information about the maximum temperature and minimum temperature over a

particular period.

SIX’S MAXIMUM AND MINIMUM THERMOMETER

MEASUREMENT OF PRESSURE : Atmospheric pressure is measured with the help of a

barometer. Different types of barometers are used for this purpose. In a simple type of

barometer mercury is used for measuring the pressure. But such a barometer is difficult

to carry. Nowadays Aneroid Barometer is used for measuring atmospheric pressure. It is

easy to carry because it has no mercury column in it.

ANEROID BAROMETER

MEASUREMENT OF WIND DIRECTION AND VELOCITY : Direction and velocity are

two characteristics of wind which are important to the meteorologists. The winds are

named on the basis of the direction from which they blow. Wind blowing from the east is

called an easterly wind and wind blowing from the west is called westerly wind. The

direction of the winds is found with the help of wind vane.

WIND VANE

Velocity or the speed of the wind is measured with the help of an instrument called

anemometer. Wind velocity is measured in kilometres per hour.

ANEMOMETER

MEASUREMENT OF HUMIDITY: Humidity means moisture in air. Moisture in air is in

the form of water vapour. Humidity varies from place to place and from time to time. It

can be measured with the help of an instrument called hygrometer. A simple hygrometer is

a wet and dry bulb thermometer.

HYGROMETER

MEASUREMENT OF PRECIPITATION: Precipitation occurs in the form of rain, snow

or hail. Rainfall is measured with the help of rain gauge. Snowfall or hail is measured by

melting it and measuring the amount of water thus produced.

RAIN GAUGE

EXERCISE

A. FILL IN THE BLANKS :

1. A Six’s Maximum and Minimum thermometer is used for measuring ____________.

2. What is measured with the help of wet and dry bulb thermometer? _____

3. What is measured with the help of an anemometer? _______

4. In Fahrenheit scale the freezing and the boiling points are_______.

B. Answer the following questions:

1. Define a) Isohyet b) Humidity c) Precipitation d) Rain

2. What are periodic winds?

3. Name the instrument which is used to measure velocity of wind.

4. Mention any two forms of precipitation.

5. Distinguish between absolute humidity and relative humidity.

6. The highest temperature for a day was 44°C whereas the minimum temperature was

24°C. Calculate daily range of temperature.

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ANSWER KEY OF S.ST WORKSHEET 7 (HISTORY

RISE OF ISLAM (PART II)

SHORT QUESTIONS

Ans1. Ibn Sena was an Arab philosopher-scientist who made great contributions in the field of diagnosing

diseases. Ibn Sena’s work The Canon of Medicine was used in many medical schools

Ans2. Alchemists searched for the philosopher’s stone, which they believed could turn common metals

into gold. In the process they discovered new metals, drugs and other substances. They attained great

expertise in chemistry and in preparing medicines.

Ans3. Islam does not allow the use of human forms in decoration. Islamic painting and sculpture depicted

geometric patterns and floral designs. Buildings were often decorated with mosaics and calligraphy (a form

of ornamental writing).

Ans4. By the tenth century AD, the power of the Abbasid caliphate was on the decline. Many of the Arab

territories came under new rulers who recruited many hardy and warlike Turkish Tribesman. Some of the

Turkish generals later converted to Islam and some of these even set up independent states. The Turkish

rulers assumed titles like amir and sultan

LONG QUESTIONS

Ans1. The religious wars between the Christians and the Muslims were called the Crusades. It lasted till the

thirteenth century. The Crusades began in 1906. These wars were devastating and many lives were lost. There was

increased interaction between European and eastern nations. Trade expanded, and it brought a lot of health to

Italian and other European trading centers.

Ans2. (a) Muslim philosophers were deeply influenced by the rational ideas of Greek philosopher especially

Aristotle. They translated a number of Greek philosophical works into their own languages.

(b) The Arabs borrowed the decimal system and the concept of zero from India. The Indian numerals (1 to 9 and 0)

were introduced in Europe by the Arabs, and hence came to be called Hindu-Arabic numerals. The Arabs invented

algebra.

Ans3. The Arabs made great progress in the use of lenses and built observations that provided accurate astronomical

data. They found out that the earth rotates on its own axis and revolves around the sun. Arab philosopher-scientists

Rhazes and Ibn Sena (Avicenna) made great contributions in the field of diagnosing diseases. The Arab rulers built

hospitals and encouraged the study of medicine. Ibn Sena’s work The Canon of Medicine was used in many medical

schools.

Ans4. Literature: The Arabs gathered knowledge from the Greeks, Chinese, Persians, Indians and Romans. They also

produced literary works such as The Rubaiyat by Omar Khayyam and The Thousand and one nights.

Architecture: Islamic architects introduced minarets and the onion-shaped dome. Islamic painting and sculpture

depicted geometric patterns and floral designs. Buildings were often decorated with mosaics and calligraphy (a form

of ornamental writing).

FILL UPS

1. 1. The Sanskrit work Panchtantra was translated into Arabic as Kalilah wa Dimnah.

2. The medieval chemical scientists were known as alchemists

3. The Arabs invented algebra.

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SUBJECT : CHEMISTRY CLASS : 7 WORKSHEET: 8

TOPIC: PHYSICAL AND CHEMICAL CHANGES

Important Terms Physical change :A change in which no new substances are formed and which can be reversed by reversing the conditions. Chemical change:A change in which new substances are formed and which can be reversed by reversing the conditions. Reversible change:A change is said to be reversible when opposite change canbe brought about by reversing the conditions . Irreversible change: A change is said to be irreversible when opposite change can not be brought about by reversing the conditions. DIFFERENCE BETWEEN PHYSICAL AND CHEMICAL CHANGE.

PHYSICAL CHANGE CHEMICAL CHANGE

1.physical change is temporary Chemical change is permanent

2.Physical change is reversible Chemical change is irreversible

3.No new substances are formed in physical change

New substances are formed in chemical change.

4.In physical change,the mass of the substance is not altered

The mass of the individual substance undergoing chemical change is altered

PHYSICAL AND CHEMICAL CHANGES CAN OCCUR TOGETHER

Physical and chemical change can occur together. Common example of this is burning of candle.

*The wax under the wick gets heated and melts. The molten wax flows down and solidifies. The change

in state from solid to liquid and then from liquid to solid is physical change

*A part of molten wax vaporiser and burns to form new products – carbon dioxide and water vapour. The

change is irreversible. So burning of wax is a chemical change.

Change of mass in chemical change :

The mass of the individual substance undergoing chemical change is altered. For example: When carbon

burns in air , the amount of carbon decreases and finally vanishes .This is because carbon reacts with

oxygen of the air to form carbon dioxide. On the other hand the mass of rusted iron nail is more than the

original nail.

Thus, in these examples

1.The mass of carbon burnt plus the mass of oxygen taken from air is equal to the mass of carbon dioxide.

2.The mass of iron gained in rusting is equal to the mass oxygen lost by air.

Exothermic change : The change in which heat is evolved. Eg . Slaking of lime.

Endothermic change: The change in which heat is absorbed. Eg. Dissolution of glucose in water

Examples of physical change: 1 )Sublimation 2 ) Melting 3 ) Freezing of liquids

Examples of chemical change: 1) Rusting 2)Fermentation 3) cooking of food

Read the text and answer the following questions :

Q1.. Classify the following as chemical or physical change

a)evaporation of water f) Growth in a plant

b)Cooking of food g) dissolution of solid

c) germination of seed h) photosynthesis in green plant

d) Fermentation i) freezing of water

e)Sublimation of iodine j) rusting

Q2.. Give one example each of the following.

1.Reversible change 2. Irreversible change

3. Exothermic change. 4. Endothermic change

Q3. Define the following.

1.Physical change 2. Chemical change 3. Reversible change

4. Irreversible change 5.Exothermic change 6. Endothermic change

Q4. Fill in the blanks.

1. When burnt wood forms carbon dioxide and ________.

2. Curdling of milk is a ___________ process.

3. Slaking of lime is a _____________ change.

Q5.State true or false.

1.Heat is absorbed when glucose is dissolved in water.

2.chemical change is reversible.

3. Mass of the substance undergoing a physical change is not altered.

Q6: Differentiate between physical and chemical change ?U

Q7. Give two examples to show that mass of an individual substance (s) undergoing a chemical change is

altered ?

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ANSWER KEY OF WORKSHEET 7 (PHYSICS)

1. a) False b) False c) True d) True

2 a) graph paper b) Volume c) 1 d) 1000 e) square metre(m2)

3. Density of a substance is defined as the mass of a unit volume of that substance.

i.e. Density = Mass/ Volume

4. S.I. unit of density is kgm-3

. CGS unit of density is gcm-3

.

Relation: 1gcm-3

= 1000kgm-3

5. Area of rectangular field = Length × Breadth

= 15m × 30m

= 450m2

6. Using, Density = Mass/Volume

10.3 = Mass/200

Hence, Mass = 10.3 ×200

= 2060 g or 2.06kg

7. This statement means that mass of a brass cube of volume 10cm3 is found to be

84g.

8. Density of water at 4oC is 1gcm

-3 or 1000kgm

-3

9. Using, Density = Mass/Volume

7.8 = 312/ Volume

Hence, Volume = 312/7.8

= 40cm3

10. Volume of liquid = length × breadth × height

= 10cm × 20cm × 5cm

= 1000cm3

or 1000mL {since, 1mL = 1cm3}

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SUBJECT- MATHEMATICS CLASS-7 CHAPTER-5: SETS

TOPIC: SETS WORKSHEET-8

DEFINITON

Any well defined collection of objects is called a set. The objects which belong to the set are called

its members or elements.

NOTATION

The sets are usually denoted by capital letters and the elements of a set are denoted by small letters.

Sets are always represented in curly brackets {}.

REPRESENTATION OF A SET

A Set can be represented by the following three methods

Description method

In this method we make a well defined description of the elements of set, enclosed in curly brackets.

Roster method or tabular form

In this method we list all the elements of the set and separate these by commas, enclosed in curly

brackets.

Rule method or set builder form

In this method we write a variable (say x) representing any member of set followed by a property

satisfied by each element of the set and enclose it in curly brackets

Example:-

(i) Write the following set in roster form and also in set builder form

The set of integers which lie between -3 and 2 (both inclusive)

Solution:

(i) Roster form – {-3, -2, -1, 0, 1, 2}

Set builder form – {x:x ϵ I, -3 ≤ x ≤ -2}

(ii) Write the following set in description form

{x│x = 3n, n ϵ N, and n < 8}

Solution:

(ii) {natural number which are multiple of 3 and are less than 24}

Practice Worksheet

1. Describe the following sets:-

(i) {Friday, Saturday, Sunday}

(ii) {April, August, October}

2. Write the following sets in tabular form and also in set builder form:

(i) The set of even whole numbers which lie between 10 and 50

(ii) The set of factors of 36.

3. Write the following sets in roster form and also in description form:

(i) {x│x = 4n, n ϵ W and n < 5}

(ii) {x:x is a letter in word ULTIMATUM}

4. If V is the set of vowels in the cord COMPETITION, write the given set in

(i) Description form

(ii) Set builder form

(iii) Roster form

Answer of Worksheet 7

(1) (i) 214

(ii) 2.7

(iii) 18.2

(iv) 163.25

(v) 13.03

(2) Rs. 40.91

(3) 14.35

(4) (i)

(ii)

(iii)

(iv)

(v)

(vi) 1

(vii) 11.765

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COMPUTER APPLICATIONS CLASS-7 WORKSHEET- 7

CHAPTER : USING LIST, IMAGES AND LINKS

HTML CODE FOR DISPLAYING A MENU

(UNORDERED, ORDERED LISTS)

HTML CODE OUTPUT

<HTML>

<HEAD>

<TITLE> MENU CARD </TITLE>

</HEAD>

<BODY>

<OL>

<LI>SNACKS

<UL TYPE= “ DISC”>

<LI>PIZZA </LI>

<LI> BURGER</LI>

<LI> CHAT </LI>

<LI> SPRING ROLL</LI>

</UL>

<LI>DESSERTS

<UL TYPE= “ DISC”>

<LI>ICE-CREAMS</LI>

<LI>RASMALLI</LI>

<LI>GULAB JAMUN</LI>

<LI>CAKES</LI>

</UL>

<LI>BEVERAGES

<UL TYPE= “ DISC”>

<LI>STRAWBERRY SHAKE</LI>

<LI>FRESH LIME WATER</LI>

<LI>MANGO SHAKE</LI>

<LI>BUTTER MILK</LI>

</UL>

</OL>

</BODY>

</HTML>

1. SNACKS

o PIZZA

o BURGER

o CHAT

o SPRING ROLL

2. DESSERTS

o ICE-CREAMS

o RASMALLI

o GULAB JAMUN

o CAKES

3. BEVERAGES

o STRAWBERRY SHAKE

o FRESH LIME WATER

o MANGO SHAKE

o BUTTER MILK

LAST WEEK WE HAD LEARNED NESTED LIST AND DEFINITION

LIST. THIS WEEK WE SHALL REVISE ALL THE LISTS

(UNORDERED, ORDERED, NESTED AND DEFINITION)

THE ABOVE PROGRAM WILL DISPLAY THE OUTPUT GIVEN ON THE RIGHT

HAND SIDE OF THE PROGRAM. THIS PROGRAM CONTAINS BOTH ORDERED AND

UNORDERED LIST AND THIS IS ALSO A NESTED LIST.

HTML Code Displaying DEFINITION List

HTML CODE OUTPUT

<HTML>

<HEAD>

<TITLE> DEFINITION OF LISTS</TITLE>

</HEAD>

<BODY>

<DL>

<DT>UNORDERED LIST </DT>

<DD >

An Unordered list is used when the items are not

to be displayed in any particular order.

</DD>

<DT> ORDERED LIST</DT>

<DD>

An ordered list is used to display the list of items in

a specific order.

</DD>

</DL>

</BODY>

</HTML>

UNORDERED LIST

An Unordered list is used when the

items are not to be displayed in any

particular order.

ORDERED LIST

An ordered list is used to display the

list of items in a specific order.

Practice the programs given above

ANSWER KEYS OF PREVIOUS WORKSHEET

(1) WRITE A HTML CODE TO DISPLAY THE NAMES OF YOUR FAVOURITE STORY BOOKS

(ANY 3) BUT THE NUMBERING SHOULD START FROM 3.

HTML CODE OUTPUT

<HTML>

<HEAD>

<TITLE> WORKING WITH START ATTRIBUTE

</TITLE>

</HEAD>

<BODY>

<OL START= “3”> USING START

<LI> DIARY OF A WIMPY KID</LI>

<LI> ADVENTURES OF TINTIN</LI>

<LI> HARRY POTTER</LI>

</OL>

</BODY>

</HTML>

3. DIARY OF A WIMPY KID

4. ADVENTURES OF TINTIN

5. HARRY POTTER

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Students are instructed to make subject wise notebooks for all the worksheets.

WRITE A HTML CODE TO DISPLAY THE NAMES OF YOUR FAVOURITE FOOD ITEMS (ANY 5)

IN REVERSE ORDER.

HTML CODE OUTPUT

<HTML>

<HEAD>

<TITLE> WORKING WITH REVERSED

ATTRIBUTE</TITLE>

</HEAD>

<BODY>

<OL START= “5” REVERSED> USING

REVERSED

<LI>BHEL PURI</LI>

<LI>DOSA</LI>

<LI>CHAT</LI>

<LI>FRENCH FRIES</LI>

<LI>ICE CREAM</LI>

</OL>

</BODY>

</HTML>

5. BHEL PURI

4. DOSA

3. CHAT

2. FRENCH FRIES

1. ICE CREAM