Question

Shri Harkrishan Sahib Public Sr.Sec. School
Assignment ( Chapter: 1,2,3,4,6,7,8,9,10,11,18)
Q1. Collect data from your friends, neighbours and classmates to know more about" milk teeth" and fill it in the below table:-
Sr. No.
Age at which first tooth fell
Age at which last tooth fell
No. Of teeth lost
No. Of teeth replaced

1.





2.





3.





4.





5.






Find out the average age at which children lose the milk teeth.
Q2. Observe the given picture and answer the following questions:-


Q1) Which palnt is shown in the figure?
Q2) Name the mode of nutrition they used?
Q3) If the given plant is green and carries out photosynthesis then why does it feed on insects?
Q4) Label A and B in the figure.
Q3. Boojho wants to know why caterpillars need to shed their skin when they grow bigger but we humans do not?
Q4. Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing?
Q5. Explain whether the burning of magnesium ribbon is physical or a chemical change?
Q6. Observe the given figure and answer the following questions:-

Q1) Name the birds shown in figure.
Q2) What are these birds doing and why?
Q3) These birds live in which region?
Q4) Write two characteristics of these birds with which they can easily adapt the environment.
Q7. How will you help your neighbours in case, cyclone approaches your village /town?
Q8. Parminder conducted an experiment in the field related to the rate of percolation .He observed that it took 80 minutes for 400 mL of water to percolate through the soil sample. Calculate the rate of percolation.
Q9. Label A to G in Human resipiratory system.

Q10. Draw a diagram of the human excretory system and label the various parts.
Q11. Why there is need of treatment of sewage water?​

Answer 1

Answer:

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Explanation:

cylfykfkyfykdyxy111112333455667889000988u665443221234556788900009887766654443221