🌟 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 🚀
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