DWARKA INTERNATIONAL SCHOOL

SECTOR- 12, DWARKA, NEW DELHI-110075

CLASS VI (SCIENCE) 2017-18

Time- 3 hours SAMPLE PAPER MM:80

GENERAL INSTRUCTIONS:

i) Q1-4 carries 1Marks

ii) Q5-6 carries 2Marks

iii) Q7 carries 3Marks

iv) Q8 Carries 5 marks

v) Draw neat diagrams with pencil wherever asked to draw.

Q1) Define the following terms:(1X5=5)

a)Evaporation

b)Transpiration

c)Potable water

d)Nitrogen fixation

e)Ligaments

Q2) Multiple choice questions:(1x6=6)

a)The short wire of LED is its ______terminal.

(i)Positive (ii) Negative (iii) Both of these (iv) None of these

b)The layer of ozone gas protects us from ______.

(i)Sunlight (ii) Ultraviolet rays (iii)Carbon monoxide (iv)Microorganisms

c)From where can rainwater be harvested?

(i)From rivers(ii) From wells (iii) From rooftops (iv) From clouds

d)The bones of movable joint are lubricated by _____

(i)Muscles (ii) Tendons (iii) Synovial fluid (iv) Ligaments

e)A bulb converts its electrical energy into ______energy.

(i)Chemical (ii) Heat and Light (iii) Mechanical (iv) None of these

f)The female reproductive part of flower is known as ______.

(i)Carpel (ii) Stigma(iii) Stamen (iv) Ovary

Q3) Answer the following in one word:(1X6=6)

1)A set of electric cells.

2)Water vapour cooling and falling as rain or snow.

3)The layer of air around the earth.

4)Joints that allow movement.

5)Food conducting tubes.

6)Aerial roots that provide support to the plant.

Q4)Give reason for the following:(1x5=5)

  1. Electrician wear rubber gloves while handling the electric circuit.
  2. We are able to bend our back.
  3. An iron strip becomes magnetized but a plastic rod does not.
  4. Biogas is a clean fuel.
  5. Mountaineers carry oxygen cylinders with them.

Q5)Write two points of difference in following:(2X4=8)

1)Conductors and Insulators

2)Taproot and Fibrous root

3)Pivotal joint and Gliding joint.

4)Reversible and Irreversible change.

Q6) Answer the following questions: (Any 10)(2X10=20)

1)Distinguish between magnetic and non-magnetic materials giving examples.

2)What kind of roots and venation will grasses have?

3)How does air get polluted?

4)What are the advantages of recycling waste?

5)A change involves energy. Explain giving an example.

6)Why is there a danger of water-borne diseases breaking out during floods?

7)Draw symbols for the following:

(i)Wire joint

(ii)Electric Bulb

8)Explain the structure of vertebral column.

9)What are the uses of magnet? Write any two.

10)What is the role of an electric switch in a circuit?

11)Describe the movement of an earthworm.

Q7) Answer the following questions in brief: (Any 5)(3x5=15)

1)What is an electric circuit? What is the function of resistor and switch in a circuit?

2)Explain the terms

(a)Composting

(b)Recycling

(c)Incineration

3)How are wings of a bird and a bat different from each other?

4)Describe how a piece of iron can be temporarily magnetized.

5)Explain water cycle with the help of well-labeled diagram.

6)Write the functions of the following:

(a)Leaves

(b)Flower

(c)Bark

Q8) Answer the following in detail: (5x3=15)

1)Write the properties associated with magnets. (any 5)

2)(a) Define biogas.

(b) How is biogas produced?

(c) Draw the diagram of biogas plant.

3)Describe the structure of flower in detail with the help of well-labelled diagram.

OR

Explain the structure of leaf with the help of well-labeled diagram.