๐ Class 7 Science Curiosity – Chapter 6 Notes
๐ฆ Adolescence: A Stage of Growth and Change | Amresh Academy
๐ 1. Definition and Significance
๐ง Key Points:
- Period of rapid growth and development ๐
- Body becomes capable of reproduction
- Similar to plants growing and producing seeds ๐ฑ
๐ Life Stages:
- ๐ถ Infancy
- ๐ง Childhood
- ๐ฆ Adolescence
- ๐จ Adulthood
- ๐ด Old Age
๐ Timing may vary for each individual ✔️
๐ 2. Physical Changes
๐น Common Changes
๐ Height & Weight:
- Rapid growth (growth spurt)
- Boys → broader shoulders
- Girls → weight gain + breast development
๐ฃ️ Voice Change:
- Boys → deeper voice (Adam’s apple grows)
- Girls → slight change
๐ง Hair Growth:
- Armpits & pubic area (both)
- Boys → facial & chest hair
๐ฃ Acne (Pimples):
- Due to oily skin
- Caused by hormones
๐น Secondary Sexual Characteristics
๐ Features that distinguish males and females:
- Boys → facial hair
- Girls → breast development
๐ Mark the beginning of puberty
๐น Reproductive Changes
๐ง Girls:
- Menstrual cycle (every 28–30 days)
- Duration: 3–7 days
- Stops at 45–55 years
๐ It is a natural and healthy process
๐ฆ Boys:
- Internal reproductive organs develop
⚠️ Important:
๐ Menstruation myths are unscientific ❌
๐ญ 3. Emotional and Behavioral Changes
๐ Emotional Changes:
- Mood swings
- Sensitivity
- Strong feelings (anger, excitement)
๐ Behavioral Changes:
- Creativity ๐จ
- Social involvement ๐ค
- Sometimes impulsive actions
✅ Positive Coping:
- ๐ Sports
- ๐ต Music
- ๐จ Art
- ๐ค Social activities
๐ฅ 4. Healthy Practices
๐ Nutrition
๐ Balanced diet includes:
- Proteins
- Carbohydrates (energy)
- Calcium (bones)
- Iron (blood)
๐ Prevents anemia (iron deficiency)
๐งผ Hygiene
- Keep body clean (especially armpits & pubic area)
- Prevent infections
๐ฉธ Menstrual Hygiene:
- Use sanitary pads
- Dispose properly ๐️
- Use eco-friendly pads ๐ฟ
๐ Physical Activity
- Exercise, sports, yoga๐ Improves health & mood
๐ Social Life
- Be respectful
- Use social media wisely
⚠️ Cyberbullying:
๐ Inform parents/teachers if facing issues
๐ซ Avoid Harmful Substances
- Tobacco ❌
- Alcohol ❌
- Drugs ❌
๐ Cause serious health problems
๐ Support:
๐งฌ 5. Role of Hormones
๐ Hormones = chemical messengers
๐ Functions:
- Control growth
- Cause puberty changes
- Affect emotions
๐ Responsible for:
- Voice change
- Menstruation
- Mood swings
๐ 6. Key Takeaways
๐ก Follow:
- Balanced diet ๐ฅ
- Good hygiene ๐งผ
- Regular exercise ๐
- Responsible behaviour ๐
๐ค Guidance:
๐ Always seek help from:
- Parents
- Teachers
๐ Final Summary
๐ Adolescence is a time of:
- Growth ๐
- Change ๐
- Development ๐ฑ
๐ With the right habits, it becomes a healthy and positive phase ✔️
✨ Perfect for revision + exams + awareness ๐
