🌟 Class 7 Science Curiosity – Chapter 6 Notes
👦 Adolescence: A Stage of Growth and Change | Amresh Academy
📘 1. Definition and Significance
🧠 Key Points:
- Period of rapid growth and development 📈
- Body becomes capable of reproduction
- Similar to plants growing and producing seeds 🌱
🔄 Life Stages:
- 👶 Infancy
- 🧒 Childhood
- 👦 Adolescence
- 👨 Adulthood
- 👴 Old Age
👉 Timing may vary for each individual ✔️
📊 2. Physical Changes
🔹 Common Changes
📏 Height & Weight:
- Rapid growth (growth spurt)
- Boys → broader shoulders
- Girls → weight gain + breast development
🗣️ Voice Change:
- Boys → deeper voice (Adam’s apple grows)
- Girls → slight change
🧑 Hair Growth:
- Armpits & pubic area (both)
- Boys → facial & chest hair
😣 Acne (Pimples):
- Due to oily skin
- Caused by hormones
🔹 Secondary Sexual Characteristics
👉 Features that distinguish males and females:
- Boys → facial hair
- Girls → breast development
📌 Mark the beginning of puberty
🔹 Reproductive Changes
👧 Girls:
- Menstrual cycle (every 28–30 days)
- Duration: 3–7 days
- Stops at 45–55 years
👉 It is a natural and healthy process
👦 Boys:
- Internal reproductive organs develop
⚠️ Important:
👉 Menstruation myths are unscientific ❌
💭 3. Emotional and Behavioral Changes
😄 Emotional Changes:
- Mood swings
- Sensitivity
- Strong feelings (anger, excitement)
🔄 Behavioral Changes:
- Creativity 🎨
- Social involvement 🤝
- Sometimes impulsive actions
✅ Positive Coping:
- 🏃 Sports
- 🎵 Music
- 🎨 Art
- 🤝 Social activities
🥗 4. Healthy Practices
🍎 Nutrition
👉 Balanced diet includes:
- Proteins
- Carbohydrates (energy)
- Calcium (bones)
- Iron (blood)
📌 Prevents anemia (iron deficiency)
🧼 Hygiene
- Keep body clean (especially armpits & pubic area)
- Prevent infections
🩸 Menstrual Hygiene:
- Use sanitary pads
- Dispose properly 🗑️
- Use eco-friendly pads 🌿
🏃 Physical Activity
- Exercise, sports, yoga👉 Improves health & mood
🌐 Social Life
- Be respectful
- Use social media wisely
⚠️ Cyberbullying:
👉 Inform parents/teachers if facing issues
🚫 Avoid Harmful Substances
- Tobacco ❌
- Alcohol ❌
- Drugs ❌
👉 Cause serious health problems
📞 Support:
🧬 5. Role of Hormones
👉 Hormones = chemical messengers
📌 Functions:
- Control growth
- Cause puberty changes
- Affect emotions
👉 Responsible for:
- Voice change
- Menstruation
- Mood swings
📌 6. Key Takeaways
💡 Follow:
- Balanced diet 🥗
- Good hygiene 🧼
- Regular exercise 🏃
- Responsible behaviour 🌍
🤝 Guidance:
👉 Always seek help from:
- Parents
- Teachers
📌 Final Summary
👉 Adolescence is a time of:
- Growth 📈
- Change 🔄
- Development 🌱
👉 With the right habits, it becomes a healthy and positive phase ✔️
✨ Perfect for revision + exams + awareness 🚀
