Multiple Choice Questions
Q1. How much of the Earth is covered by water?
a) One-third
b) One-fourth
c) Three-fourth
d) One-eighth / Full / 1/2
Correct Answer: c) Three-fourth
Q2. Largest water bodies on Earth are called what?
a) Pond
b) River
c) Sea
d) Ocean
Correct Answer: d) Ocean
Q3. How much of the Earth is covered by land?
a) One-fourth
b) Two-fourth
c) Three-fourth
d) One-third
Correct Answer: a) One-fourth
Q4. Marine life means:
a) Life on oceans and seas
b) Life in oceans and on land
c) Life on land
d) Life on water
Correct Answer: a) Life on oceans and seas
Q5. Which of the following is called the Blue Planet?
a) The Moon
b) The Earth
c) Oceans
d) Continents
Correct Answer: b) The Earth
Q6. Which of the following hemispheres holds more water?
a) Eastern
b) Northern
c) Southern
d) Western
Correct Answer: c) Southern
Very Short Answer Type Questions
Q1. Which island is known as the largest in the world?
The largest island in the world is Greenland, a massive landmass in the North Atlantic. It is known for its extensive ice sheet covering over 2.1 million sq. km and belonging to the Kingdom of Denmark.
Q2. Why are oceans referred to as the lungs of the planet?
Oceans are called the lungs of the planet because they produce a large amount of oxygen that we breathe, which is essential for life on Earth.
Q3. Which authority in India is responsible for dealing with disaster management?
In India, the National Disaster Management Authority (NDMA) is responsible for dealing with all types of disasters.
Short Answer Type Questions
Q1. Explain the following terms: Continents, Oceans, Island.
Continents: Continents are large landmasses that form the Earth’s land area. There are seven continents:
- Asia
- Africa
- Antarctica
- North America
- South America
- Europe
- Australia
Oceans: Oceans are vast bodies of salt water that cover about 71% of the Earth’s surface. There are five major oceans:
- Atlantic Ocean
- Indian Ocean
- Southern Ocean
- Pacific Ocean
- Arctic Ocean
Island: An island is a landmass that is completely surrounded by water. Islands can vary in size from small patches of land to large areas like Greenland. Some islands are formed by volcanic activity, while others may be the result of rising sea levels or erosion.
Q2. Write the different ways of saving water.
Rainwater Harvesting: The collection, storage and use of rainwater that runs off from surfaces like rooftops, roads and grounds.
Recycling Wastewater: Treating and reusing water that has already been used for various purposes.
Drip Irrigation: The process of delivering water directly to the roots of plants through small tubes and emitters.
Long Answer Type Questions
Q1. Why is water scarcity a global concern despite the abundance of water on Earth?
Water scarcity is a global concern because most of Earth’s water is salt water, leaving little accessible freshwater.
It is caused by:
- Limited freshwater availability
- Uneven distribution
- Pollution
- Population growth
- Overuse
- Climate change impacts
- Poor infrastructure
- Poor management
Q2. In what way do oceans and continents impact life on Earth, including human life?
Oceans regulate Earth’s climate and support marine life. Oceans provide resources such as fish and salt and serve as major transportation routes for global trade.
Continents provide habitats for humans, animals and plants. Continents contain natural resources like minerals, forests and freshwater.
Together, oceans and continents shape ecosystems, weather patterns and human activities.
Q3. Describe the geographical significance of the Arabian Sea and the Bay of Bengal to India.
The Arabian Sea lies to the west and the Bay of Bengal is situated to the east.
These two bodies of water play significant roles in:
- Indian climate
- Trade routes
- Maritime activities
- Monsoon patterns
The Arabian Sea is important for Indian trade routes and marine activities with the Middle East and Africa.
The Bay of Bengal connects India with Southeast Asia.
Both water bodies influence the monsoon patterns, which are vital for India’s agriculture and overall economy.