Science

Date: Class: VI

Time: 3 hrs M. M: 90

General Instructions:

1. There are 36 questions in this paper.
2. Marks are indicated against each question.
3. Q24 to Q36 are based on practical skills.
4. All questions are compulsory.

1 From which part of the plant cotton is obtained? Also name the type of soil suitable for 1 growing cotton. 2 Give the SI unit of the following:

1. Length (b) Time

3 Sohan loves to eat pizza, chips, burgers, etc. Doctor has advised him to stop eating junk food. 1 Give one reason for his suggestion. 4 Beera, a farmer would clear his field every day and burn dry leaves fallen on the ground. 2 After sometime he found that those living in huts near his field were suffering from cough and breathing problem. Explain why? Also suggest another way to dispose the leaves. 5 While travelling in a train, it appears that the trees are moving whereas co passengers appears 2

to be stationary. Explain the reason. 6 Why does a child have 300 bones whereas an adult has only 206 bones? 2

7 (a) Give any two reasons of classifying materials into different groups. 3

1. How is density of an object related to its floating or sinking?

8 The pie chart shown in figure below are based on waste segregation method adopted by two families X and Y respectively. 3

<math>\mathbf{X}</math> <math>\mathbf{Y}</math>

Metal Metal

Newspaper Kitchen was te Newspaper Kitchen waste

and polythene

Polythene bags bags

Which of the two families X or Y do you think is more environmentally conscious and why?

9 Identify the following methods of separation shown in fig A, B and C. Also write the 3 principle behind these methods.

Α В C 10 3

1. Distinguish between pure substance and mixture.

1. Lemonade is prepared by mixing lemon juice, sugar and water. You wish to add ice to cool it. Should you add ice to the lemonade before or after dissolving sugar? In which case it would be possible to add more sugar. Explain.

3 3 11 Identify the type of motion exhibited in each case:

1. Movement of the drawer of a table.
2. A car moving along a curved road.
3. Motion of moon around the earth.
4. A potter's wheel
5. Motion of a swing.
6. Motion of a striker on a carrom board.

12 (a) Mehak wants to perform a shadow show in her classroom. What are the requirements for 3 her show?

1. Three identical towels of red, blue and green colour are hanging on a clothes line in the

sun. What would be the colour of the shadow of these towels? Give reason for your answer. 13 (a)Define measurement.

1. Why is it necessary to have a standard unit of measurement?

14 (a)Convert the following: 3

1. 3954 km into m
2. 71.5 m into cm.
3. Moon is a non-luminous object, then how does it shine at night?

15 Look at the flowchart given below and answer the questions that follow: 3

Wheat <math>\rightarrow</math>Rat<math>\rightarrow</math>Snake<math>\rightarrow</math>Eagle

1. What does this flowchart depict?
2. The farmer uses pesticides in the field. How is that useful to the farmer?
3. What will happen if all the snakes in the field are removed?

16 Write an activity to check the presence of protein in milk. 3

17 Write one word for the following: 3

1. Joint which allows movement in all directions
2. Joint present in the human skeleton which does not move.
3. Hard structure that forms the skeleton.
4. Other name of brain box.

(e)Bones that join with the chest bone at one end and to the back bone at the other end. (f)Joint where our neck joins with our head.