Human Impact on Environment — Flashcards
NIOS · Class 10 · Science & Tech
44 flashcards for Human Impact on Environment (NIOS Class 10 Science & Tech) to test yourself on key terms and facts.
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What is an environmental problem?
Answer
An environmental problem is any harmful change in nature that affects living beings and their surroundings. It may happen due to natural disasters or human activities.
Why is a large human population a problem for the environment?
Answer
A large population needs more land, water, food, energy, and space. This increases pressure on natural resources and leads to deforestation, pollution, and waste generation.
How do floods damage life and property?
Answer
Floods can destroy crops, houses, roads, and public utilities. They also affect human and animal life and may spread epidemics because water becomes dirty and unsafe.
What are two important ways to prevent damage during floods?
Answer
Important measures include cleaning and desilting water channels, avoiding construction in river beds, building flood-safe structures, and keeping an evacuation plan ready.
Why are cyclones dangerous in coastal areas?
Answer
Cyclones are intense low-pressure storms with very strong winds and heavy rain. They can damage houses, crops, livestock, transport, and coastal settlements.
Which are the two cyclone seasons in India?
Answer
The two cyclone seasons in India are the pre-monsoon season from April to May and the post-monsoon season from October to December.
What happened in the Orissa super cyclone of 29 October 1999?
Answer
It struck Orissa on 29 October 1999 with wind speeds of 270 to 300 km per hour. It caused heavy damage to agriculture, livestock, infrastructure, industries, and the environment.
Why is Balasore district important in cyclone studies?
Answer
Balasore district in Orissa is the most vulnerable district for cyclone landfall.
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