The City School

PAF Chapter

Prep Section

Class – 6

Worksheets for Intervention Classes (1st Term)

The City School /PAF Chapter / Prep + Senior I Section / Worksheet for Intervention Class /Science /Class – 6 Page 2 of 11

INTRODUCTION TO SCIENCE (Chapter 1) Q.1 Fill in the blanks 1. ______________________ is the study of structure of earth.

2. ____________________ studied wild chimpanzee in their natural habitat Africa.

3. ___________________ is used to separate an experimental setup from the outside environment.

4. ________________________ is used for measuring a volume of liquid to an accuracy of 1cm3.

5. The name of first cloned animal was _________________________________.

6. The application of science is known as _______________________________.

7. Vaccines can help us to ________________________ diseases.

8. _____________________________ can cause air pollution.

9. ______________ is used to support the apparatus during heating.

10. .The examples of radioactive substances are ______________, __________ and ___________.

Q.2 State true or false and rewrite the false statement. 1. Isaac Newton developed vaccines to protect human beings and animals from deadly diseases ( )

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2. Perseverance means to ask questions why and find out about things ( )

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3. Marie curie discovered and studied the nature of radium ( )

4. Inferring is a skill of drawing conclusion ( )

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5. We can observe plant cells with the naked eye ( )

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The City School /PAF Chapter / Prep + Senior I Section / Worksheet for Intervention Class /Science /Class – 6 Page 3 of 11

Q.3 Write down the use of following laboratory apparatus. Apparatus Uses

Beaker

crucible

Gas jar

Retort stand

Q.4. Try formulating a hypothesis based in the observation “plant makes food in the presence of sunlight”

MICRO-ORGANISMS (Chapter 5) Q.1 Fill in the blanks 1. Yeasts are a type of ________________________.

2. ___________________ was the first scientist to observe microorganisms under his microscope.

3. Staphylococcus aureus is a _________________________________.

4. Parasites are those organisms which absorb ____________________________ from their host.

5. ____________________________ developed the process of pasteurization.

6. Diseases such as mumps, chicken pox, measles and AIDS are caused by _____________________.

7. Malaria is a disease caused by a micro-organism called _________________________________.

8._________________________ bacteria can cause food spoilage and poisoning.

9. _________________________________ can be used to prevent certain diseases.

10. Bacterial diseases can be treated by _____________________________________.

The City School /PAF Chapter / Prep + Senior I Section / Worksheet for Intervention Class /Science /Class – 6 Page 4 of 11

Q.2 State true or false and re-write the false statement 1. BCG vaccination can prevent pneumonia. (___________)

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2. Tobacco mosaic virus attacks birds. (___________)

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3. Decomposition is the breakdown of dead or waste matter into simpler substances.(________)

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4. Antibiotics kill or inhibit the growth of viruses. (___________)

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5. Monobacteria can make their own food using sunlight just like plants. (___________)

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Q.3 Write down the difference between bacteria and viruses. Bacteria Viruses

Q.4 Write down the treatment of the following diseases

Diseases Treatment Typhoid fever

Dengue fever

Mumps

Cholera

Athlete’s foot

Measles

Tuberculosis

The City School /PAF Chapter / Prep + Senior I Section / Worksheet for Intervention Class /Science /Class – 6 Page 5 of 11

MORE ABOUT DISSOLVING (Chapter6) Q.1 Fill in the blanks 1. Sugar dissolves in water to form sugar ____________________________.

2. Insoluble solids can be separated by ____________________________________.

3. Soluble solids can be separated by ________________________________________________.

4. Talc powder is ________________________________________ in water.

5. In the process of filtration the insoluble solid is left on the filter paper as __________________.

6. The solution that passes through filter paper in the process of filtration is known as___________.

7. The substance which dissolves the solute in solution is known as _________________________.

8. Tea leaves can be separated from sieve by using a _______________________________.

Q.2 State true or false and re-write the false statement 1. Soluble solids can be separated by filtration. (___________)

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2. The faster the solution is stirred the slower the solid dissolves. (___________)

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3. The surface area of solid also affects the rate of dissolving of solid in a solution. (___________)

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4. A mixture of sand, salt and water can be separated first by evaporation then by filtration.

(___________)

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5. The colder the solution the faster the solid dissolves. (___________)

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Q.3 Write down the difference between evaporation and filtration. Evaporation Filtration

The City School /PAF Chapter / Prep + Senior I Section / Worksheet for Intervention Class /Science /Class – 6 Page 6 of 11

Q.4 Write the step by step process to separate a mixture of chalk, sugar and water.

Forces (Chapter 8) Q1. Fill in the blanks:

1. _______________________ can pick up things made up of iron.

2. ____________________________ is a force that slows down a parachute.

3. Your _____________________ is caused by the Earth pulling down on you.

4. ___________________________ is more on Earth than the Moon.

5. ____________________ is used to measure force.

6. The moving objects can be slow down due to ____________________.

7. The SI unit of weight is ________________________.

8. A force called ___________________ pulls the objects towards Earth.

9. The upward force from the water is called ____________________.

10. Force required to lift a mass of 1 kg is __________________________.

Q2. Write the effects of forces. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Q3. Why does the object weigh less on the moon than on the Earth?

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Q4. Differentiate between air resistance and upthrust.

Air resistance Upthrust

Q5. Ahmed is measuring pull. He uses apparatus shown in the picture.

a. What is the name of the instrument?

______________________________________

b. What units do we use to measure force?

______________________________________

c. A space team weighs a treasure box on Earth and on the Moon. The weighs are : Earth: 36 N Moon : 6N

Explain why the weighs are different.

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Q6a. Identify the two forces acting on the diagram of the parachute.

Q6b. Represent the direction of each force on the parachute with arrows and label them.

a. What does air resistance do to the plane? _____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

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b. How is plane designed to reduce the effect of air resistance?

_____________________________________________________________________________

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The City School /PAF Chapter / Prep + Senior I Section / Worksheet for Intervention Class /Science /Class – 6 Page 9 of 11

PHYSICAL QUANTITIES AND MEASUREMENTS (Chapter 2)

Q1. Fill in the blanks with the correct answer:

i. _______________ is a measure of the space occupied by a substance. a. Area b. Volume c. Mass d. Length

ii. When a baby is born, the circumference of his/her head can be measured by using a _____ a. Vernier caliper b. Meter ruler c. Measuring tape d. Hand span

iii. The size of a bacterium is measured in _____________. a. Decimeters b. Nanometers c. Micro meters d. Centimeters

iv. ______________ is a measure of the distance between two points a. Volume b. Length c. Area d. Angle

v. Weight is the force which is measured in _______________. a. Newton b. Kilogram c. Meter d. Square meter

Q.2 Fill in the blanks: i. _________________________ are commonly used for measuring short period of time.

ii. The curved surface of the water is called the ________________________________.

iii. One litre is equal to __________________________ milliliters.

iv. We use beam balance to measure __________________________________.

v. An electronic stopwatch can measure time intervals accurate to _________________________.

Q.3 Write down the SI units for the physical quantities given in a table below. Also state the

symbols for these SI units.

S.No Physical quantity SI units Symbols

a. Length

b. Speed

c. Mass

Q4. Sana has a doll house with a rectangular base which is 45cm long and 35cm wide.

Calculate the area of the base of her doll house.

Solution:

____________________________

____________________________

____________________________

____________________________

Q5a. Identify the following method used to measure the volume of irregular solids.

________________________

Q5b. Find the volume of an object.

Ans. Volume of a liquid =V_0 ______

Volume of a liquid with an irregular shaped object =V_1 __________

Volume of an irregular shaped object =V= V_1 - V_0

_______________ = _______