Chapter 7 – Weather, climate and adaptations of animals to climate

These NCERT Class 7 Science Chapter 7 notes explain the concepts of weather and climate and how they affect living organisms. The chapter helps students understand that weather changes daily, while climate represents long-term conditions of a place.

Weather, Climate and Adaptations of Animals to Climate also explains how animals survive in extreme regions like polar areas and tropical rainforests through special adaptations. This chapter connects environment, animals, and survival in a simple manner.

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1. Introduction: why weather and climate matter

•  Daily weather affects clothes, food, travel, and work.
•  Long-term climate decides plants, animals, and human life of a region.
•  Animals survive in different regions due to special adaptations.
•  Weather is the mood of the day, while climate is nature’s habit.

2. Weather

•  Weather is the condition of the atmosphere at a particular place and time.
•  Weather changes frequently within short periods.
•  Main elements are temperature, humidity, rainfall, and wind speed.
•  A day may be hot and humid, while the next may be cool and rainy.

3. Climate

•  Climate is the average weather condition of a place over a long period (about 25 years).
•  Climate changes slowly over time.
•  Rajasthan has a hot and dry climate.
•  Kerala has a hot and wet climate.

4. Difference between weather and climate

•  Weather is short-term and can change daily.
•  Climate is long-term and changes slowly.
•  Today’s rain shows weather, while monsoon climate shows climate.

5. Factors affecting climate

•  Distance from equator affects temperature.
•  Altitude influences heat and cold conditions.
•  Distance from sea affects rainfall and humidity.
•  Wind patterns influence regional climate.

6. What is adaptation

•  Adaptation means special features or habits that help animals survive.
•  Adaptations depend on the environment where animals live.
•  Nature prepares animals according to their habitat.

7. Climate of polar regions

•  Polar regions are extremely cold.
•  Land remains snow-covered for most of the year.
•  There is very little vegetation.
•  Long winters dominate these regions.

8. Adaptations in polar bear

•  Thick fur helps the polar bear stay warm.
•  A thick layer of fat (blubber) provides insulation.
•  White colour helps in camouflage in snow.
•  Wide paws help in swimming and walking on snow.

9. Other polar animals

•  Seals and penguins live in polar regions.
•  They have thick skin or fat to prevent heat loss.
•  Their body shape helps conserve body heat.

10. Climate of tropical rainforests

•  Tropical rainforests are hot and humid throughout the year.
•  They receive heavy rainfall.
•  Forests are dense with rich vegetation.
•  Indian examples include Western Ghats and Andaman and Nicobar Islands.

11. Adaptations in tropical animals

•  Tropical animals must escape predators.
•  They need to move easily on trees.
•  They must handle heat and humidity.

12. Examples of tropical adaptations

•  Monkeys have long tails for balance and strong limbs for climbing.
•  Lion-tailed macaque lives in the Western Ghats, stays on trees, and has sharp vision.
•  Elephants have large ears for cooling and a trunk for feeding and drinking.

13. Camouflage

•  Camouflage helps animals blend with their surroundings.
•  It protects them from enemies and predators.
•  Green insects on leaves and chameleons changing colour show camouflage.

14. Importance of adaptations

•  Adaptations help animals survive extreme climates.
•  They help maintain ecosystem balance.
•  Adaptations ensure the continuation of species.

15. Climate change and animals

•  Climate change affects natural habitats.
•  Animals may struggle to survive.
•  It can lead to migration or extinction.

16. Important keywords with simple definitions

•  Weather – day-to-day condition of the atmosphere.
•  Climate – average weather over a long period.
•  Adaptation – special feature helping survival.
•  Polar region – extremely cold region near the poles.
•  Tropical rainforest – hot, wet forest with heavy rainfall.
•  Camouflage – blending with surroundings for protection.

Understanding NCERT Class 7 Science Chapter 7 – Weather, Climate and Adaptations of Animals to Climate is important to learn how environmental conditions influence life on Earth. The chapter clearly explains animal adaptations and the role of climate in shaping ecosystems.

These concepts are useful for school examinations and foundation-level science preparation. Students should next read Chapter 8: Winds, Storms and Cyclones to understand air movement and natural disasters.

FAQs

Q1. What is explained in NCERT Class 7 Science Chapter 7?
The chapter explains weather, climate, and adaptations of animals to different climates.

Q2. What is the difference between weather and climate?
Weather is the daily condition of the atmosphere, while climate is the average condition over many years.

Q3. What are adaptations?
Adaptations are special features or habits that help animals survive in their environment.

Q4. Why do polar animals have thick fur and fat?
Thick fur and fat help polar animals stay warm in extremely cold conditions.

Q5. Why is NCERT Class 7 Science Chapter 7 important for exams?
It explains environmental concepts and animal adaptations that are frequently asked in school exams.

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