Adolescence A Stage of Growth and Change
Adolescence is the stage of life between childhood and adulthood, when the body and mind go through many changes. This Class 7 Curiosity chapter explains these changes scientifically — the role of hormones, the importance of good nutrition and hygiene, and how to cope with emotional and social changes in a healthy way.
Learning objectives
- Define adolescence and puberty.
- Describe the role of hormones and glands.
- Explain the need for nutrition and hygiene.
- Approach physical and emotional changes positively.
Key concepts
Adolescence and puberty
Adolescence is the period of life, roughly from age 10 to 18 or 19, when a child gradually develops into an adult. Within it, puberty is the time when the body matures and becomes capable of reproduction. These changes happen at different ages for different people, which is completely normal.
The role of hormones
The changes of adolescence are controlled by chemical messengers called hormones, which are made by endocrine glands and carried by the blood. Hormones direct growth and the other changes of this stage. Because these changes are natural and hormone-driven, they should be understood, not feared.
Physical changes
During adolescence there is a rapid increase in height and changes in body shape. New features, called secondary characteristics, develop and differ between boys and girls. These bodily changes prepare the body for adulthood and are a normal, healthy part of growing up.
Nutrition, hygiene and emotional changes
Because the body is growing fast, adolescents need a balanced diet rich in proteins, vitamins and minerals, along with plenty of water and regular exercise. Good personal hygiene becomes especially important, since the skin becomes more active. Emotions can also feel stronger and change quickly; sharing feelings with trusted family members, teachers or friends helps a great deal.
Key definitions
- Adolescence
- The stage of life between childhood and adulthood (about 10–19 years).
- Puberty
- The time during adolescence when the body matures.
- Hormone
- A chemical messenger made by an endocrine gland that controls body changes.
- Balanced diet
- Food that provides all nutrients in the right amounts.
Solved examples
Q1. What controls the changes that occur during adolescence?
Solution: Hormones, made by endocrine glands.
Q2. Why do adolescents need a balanced diet?
Solution: Because the body is growing rapidly and needs extra nutrients.
Q3. Is it normal for these changes to begin at different ages?
Solution: Yes, the timing varies from person to person.
Common mistakes to avoid
- Thinking everyone changes at exactly the same age.
- Believing the changes of adolescence are abnormal or worrying.
- Ignoring nutrition and hygiene during this fast-growing stage.
- Confusing hormones with nutrients.
Adolescence A Stage of Growth and Change — MCQ Quiz
10 questions with instant feedback. Use number keys 1–4 to answer.
Adolescence is the stage between:
Practice questions
Short answer
What is adolescence?
The stage of life between childhood and adulthood, about 10–19 years.
What are hormones?
Chemical messengers made by endocrine glands that control body changes.
Why is hygiene important during adolescence?
Because the skin becomes more active and needs regular care.
Long answer
Describe the changes that take place during adolescence and what controls them.
Adolescence is the stage of life between childhood and adulthood during which the body and mind gradually mature. Physically, there is a rapid increase in height and changes in body shape, and new features called secondary characteristics develop, differing between boys and girls. These changes are controlled by hormones — chemical messengers made by endocrine glands and carried in the blood — which direct growth and the other developments of this stage. Importantly, these changes begin at different ages for different people, and this variation is entirely normal. Understanding that the changes are natural and hormone-driven helps adolescents face them with confidence rather than worry.
Explain why good nutrition, hygiene and emotional support matter during adolescence.
Because the body grows quickly during adolescence, the needs of the body increase. A balanced diet rich in proteins, vitamins and minerals, with enough water and regular exercise, provides the materials and energy for healthy growth. Personal hygiene becomes especially important, as the skin becomes more active; regular washing keeps the body clean and healthy. Adolescence also brings stronger and sometimes rapidly changing emotions, which is a normal part of growing up. Sharing feelings with trusted family members, teachers or friends, getting enough sleep, and staying active all help adolescents cope well and feel supported during this stage of change.
HOTS (Higher Order Thinking)
Two classmates of the same age look very different in height. Is this a problem? Explain.
No — adolescents grow and change at different ages and rates, so differences in height between peers are completely normal.
Why might an adolescent need more food than a young child?
Because the body is growing rapidly during adolescence, it needs extra nutrients and energy to support that growth.
Quick revision
Revision notes
- Adolescence: childhood → adulthood, about 10–19 years.
- Changes are controlled by hormones from endocrine glands (carried in blood).
- Timing of changes varies from person to person — this is normal.
- Need a balanced diet, good hygiene, and emotional support.
Key takeaways
- Adolescence is a normal, healthy stage of growth.
- Hormones drive the changes of this stage.
- Good nutrition, hygiene and support keep adolescents healthy.
Frequently asked questions
At what age does adolescence usually occur?
Roughly between 10 and 18 or 19 years, varying for each person.
What produces hormones in the body?
Endocrine glands.
Is it normal to feel stronger emotions during adolescence?
Yes; sharing feelings with trusted people helps.