CBSE Class 8 Science Chapter 7 Reaching The Age Of Adolescence Activities

CBSE Class 8 Science Chapter 7 Reaching The Age Of Adolescence Activitys

Activity 1

Aim: To determine the maximum height that would be reached at the end of the growth period.

Materials Required: Graph paper, pencil, table, etc

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Procedure:

1. Use the data given in the table in the previous activity to draw a graph.
2. Take age as an X X-axis and per cent growth in height on the Y-axis.
3. Mark the point representing your age on the graph (Let the age of a girl be 11 years, height be 120 cm).
4. Find out the percentage of height already reached and calculate the height she might eventually reach

Observation

At the age of 11 years (girl), the point of age touches the 88% mark on the height axis. So, the maximum height that will eventually be reached

Present height / % of full height at this age x = 100 = 136.36 cm

Conclusion: From this activity, we conclude that we can determine the maximum height that would be reached at the end growth period using the formula.