MCQ Chapter 1 Oceans and Life Class 9 Social Science CBSE

1. Why does sea ice not form easily in the Norwegian region despite its high latitude?

The region receives no ocean currents.

The Gulf Stream carries warm water towards the region.

The region is surrounded by desert landforms.

The Moon produces extra heat during high tide.

Question 1 of 20

2. Which cold current flows along the east coast of Canada?

Gulf Stream

Kuroshio Current

Labrador Current

North Atlantic Drift

Question 2 of 20

3. What are the regions where warm and cold ocean currents meet called?

Fishing grounds

Continental shelves

Abyssal plains

Tidal basins

Question 3 of 20

4. What is a cyclone?

A flat area of the ocean floor

A regular rise and fall of ocean water

A continuous stream of cold ocean water

A large rotating storm

Question 4 of 20

5. What is a tsunami?

A warm ocean current

A series of giant waves caused mainly by underwater earthquakes

A regular daily tidal movement

A mountain located below sea level

Question 5 of 20

6. What is the main purpose of an early warning system?

To prevent all natural hazards from occurring

To increase the height of ocean waves

To detect potential disasters and provide timely warnings

To stop the movement of ocean currents

Question 6 of 20

7. Which natural hazards are specifically addressed by the early warning systems discussed in this chapter?

Cyclones and tsunamis

Droughts and desertification only

Volcanic eruptions on land only

Avalanches and forest fires only

Question 7 of 20

8. Which Indian government project focuses on cyclone shelters, warning systems and emergency response mechanisms?

Pradhan Mantri Matsya Sampada Yojana

United Nations Convention on the Law of the Sea

International Convention for the Prevention of Pollution from Ships

National Cyclone Risk Mitigation Project

Question 8 of 20

9. What is the main objective of the Storm Surge Early Warning System (SSEWS)?

To measure only the depth of ocean trenches

To forecast cyclone-induced storm surges and the extent of coastal inundation

To identify only warm ocean currents

To determine fishing boat ownership

Question 9 of 20

10. Which organisations collaborate in establishing the Storm Surge Early Warning System for Indian coasts?

UNESCO and the World Bank

The Navy and fishing cooperatives only

INCOIS and the India Meteorological Department

The United Nations and the Gulf Stream Authority

Question 10 of 20

11. What is the main purpose of the GEMINI device?

To provide fishermen with important safety and marine information

To measure the height of mountains on land

To control the movement of ocean currents

To generate electricity from offshore winds

Question 11 of 20

12. How does the GEMINI device transfer satellite information to fishermen's mobile phones?

Through underwater cables

Through ocean currents

Through printed maps only

Through Bluetooth

Question 12 of 20

13. How many regional languages can the INCOIS mobile application use to display information through the GEMINI system?

Five

Nine

Twelve

Twenty-four

Question 13 of 20

14. What is the current communication range of the GEMINI system described in the chapter?

Up to 10 nautical miles into the sea

Up to 25 nautical miles into the sea

Up to 50 nautical miles into the sea

Up to 500 nautical miles into the sea

Question 14 of 20

15. Which organisation collaborates with the Government of India in monitoring cyclones through weather-related services?

India Meteorological Department

World Bank

International Maritime Organization only

United Nations Development Programme only

Question 15 of 20

16. What was one important lesson from the 2004 Indian Ocean tsunami?

Tsunamis cannot affect populated coastal regions.

Coastal communities do not need warning systems.

Satellite technology cannot help detect ocean hazards.

Effective tsunami warning systems and disaster-management mechanisms are essential.

Question 16 of 20

17. Which Indian coastal region was among those severely affected by the 2004 Indian Ocean tsunami?

Punjab

Tamil Nadu

Haryana

Rajasthan

Question 17 of 20

18. What do Ocean Bottom Pressure Recorders (OBPRs) do in a tsunami warning system?

Measure the speed of ships in harbours

Generate tidal electricity

Detect the passage of tsunami waves and help confirm the threat

Identify the names of approaching cyclones

Question 18 of 20

19. Which instruments help monitor changes in sea level and track the arrival and movement of tsunami waves?

Coastal tide gauges and radars

Road traffic cameras only

Mountain weather stations only

Fishing nets and anchors

Question 19 of 20

20. Why are public awareness and training programmes important during ocean-related disasters?

They make cyclones change direction.

They prevent underwater earthquakes.

They remove the need for scientific monitoring.

They help people understand warnings and respond appropriately.

Question 20 of 20

Leave a Reply Cancel reply

CBSE Board English Medium

CBSE Board Hindi Medium

बिहार बोर्ड

उत्तर प्रदेश बोर्ड

महाराष्ट्र बोर्ड

मध्य प्रदेश बोर्ड

ગુજરાત બોર્ડ

PSC Exam Preparation