Overview of the Environment Around Us — Flashcards
ICSE · Class 9 · Environmental Science
48 flashcards for Overview of the Environment Around Us (ICSE Class 9 Environmental Science) to test yourself on key terms and facts.
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What is the environment?
Answer
The environment is the sum total of all natural and human-made conditions that surround and influence living organisms.
Why is the environment called a broad system?
Answer
It includes physical, biological, human, and natural resource components. These parts are linked together and affect one another.
What does the term environment mean?
Answer
The term environment comes from the French word environ, meaning to surround.
What is Earth described as in relation to life?
Answer
Earth is the only known planet in the universe that supports life. It is a life-supporting planet because of its unique physical, chemical, and biological conditions.
Why is Earth suitable for life?
Answer
Earth has the right distance from the Sun, liquid water, a protective atmosphere, and continuous cycling of matter and energy. These conditions help living organisms survive.
What is the habitable zone?
Answer
The habitable zone is the ideal distance from the Sun that maintains a moderate temperature on Earth’s surface.
Why would Earth be too hot if it were closer to the Sun?
Answer
If Earth were closer to the Sun, water would evaporate due to extreme heat. Liquid water would not remain available for life.
Why would Earth be too cold if it were farther from the Sun?
Answer
If Earth were farther from the Sun, water would freeze because of extremely low temperatures. Life as we know it would become difficult.
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